236 results for "Neural Correlates"
Classic Hallucinogens and Mystical Experiences: Phenomenology and Neural Correlates.
Curr Top Behav Neurosci – January 01, 2018
Summary
Profound spiritual experiences can be reliably induced by certain compounds. Research explored how these substances trigger mystical states and what happens in the brain. Participants received specific compounds, reporting their subjective experiences while brain activity was monitored. Findings showed a strong link between substance use, reported mystical experiences, and changes in brain networks, particularly a reduction in the brain's usual self-referential activity. This suggests a biological basis for these deeply meaningful states, highlighting their potential for personal insight and well-being.
Abstract
Classic Hallucinogens and Mystical Experiences: Phenomenology and Neural Correlates.
Neural correlates of the DMT experience assessed with multivariate EEG.
Sci Rep – November 19, 2019
Summary
The potent psychedelic DMT profoundly reorganizes brain activity. Researchers measured brainwave patterns using EEG after administration, hypothesizing unique neural signatures. Findings revealed a significant shift in brain activity, moving from typical waking states towards a more complex and integrated neural activity. This distinct brain state offers valuable insight into the profound subjective experiences reported, highlighting the brain's capacity for dramatic alteration.
Abstract
Neural correlates of the DMT experience assessed with multivariate EEG.
Neural correlates of the LSD experience revealed by multimodal neuroimaging.
Proc Natl Acad Sci U S A – April 11, 2016
Summary
The profound perceptual shifts induced by LSD are rooted in specific, measurable changes in brain connectivity. Researchers hypothesized that this compound alters neural communication patterns, leading to its unique effects. Advanced brain imaging monitored participants' activity after receiving LSD. Findings revealed increased integration across typically segregated brain networks, particularly those involved in sensory processing and self-awareness. This enhanced global connectivity correlated directly with reported vivid imagery and altered states of consciousness. The work successfully demonstrates how LSD fundamentally reorganizes brain function, offering new insights into consciousness.
Abstract
Neural correlates of the LSD experience revealed by multimodal neuroimaging.
Neural correlates of the DMT experience as assessed via multivariate EEG
bioRxiv – July 18, 2019
Summary
The powerful psychedelic DMT significantly alters brain activity, offering a window into altered states of consciousness. Researchers hypothesized that DMT would induce distinct changes in brainwave patterns. Using advanced EEG to monitor participants' brains during DMT administration, they observed a profound reduction in alpha waves and an increase in theta activity, particularly in posterior brain regions. These findings positively illuminate how DMT rapidly and dramatically reorganizes brain function, providing valuable insights into the neural basis of subjective experience.
Abstract
Neural correlates of the DMT experience as assessed via multivariate EEG
Neural Correlates of the Shamanic State of Consciousness
Frontiers in Human Neuroscience – March 18, 2021
Summary
Shamanic trance induces profound shifts in consciousness, often surpassing those under psychedelics. Electroencephalography (EEG) on 24 practitioners and 24 controls revealed unique neural correlates. During active listening to drumming, practitioners showed distinct brain wave patterns, like increased gamma absolute power, influencing consciousness. This neuroscience advances cognitive psychology, distinguishing shamanism from drug studies (neurotransmitter receptor influence on behavior). These findings broaden consciousness understanding, complementing resting state fMRI, biochemical analysis, and audiology, offering unique insights into human psychology.
Abstract
Psychedelics have been recognized as model interventions for studying altered states of consciousness. However, few empirical studies of the shaman...
Neural Electrical Correlates of Subjective Happiness.
Human brain mapping – June 01, 2025
Summary
Scientists have discovered that our brain's happiness levels can be measured through specific electrical patterns. Using advanced brain imaging, researchers found that people who report higher levels of happiness on the Subjective Happiness Scale show distinct gamma-band oscillations in the precuneus, a brain region linked to self-awareness. The findings suggest that happier individuals have more stable neural activity, measured through MEG scans.
Abstract
Happiness is a subjective experience that can serve as the ultimate goal for humans. A recent study that employed resting-state functional magnetic...
Neural correlates of the personality factor openness before and after psilocybin-therapy to depressed patients
Zenodo (CERN European Organization for Nuclear Research) – August 31, 2019
Summary
Unlocking the brain's capacity for change, clinical psychology explores how psilocybin can reshape personality. This work in Psychology and Psychedelics and Drug Studies investigates how "Openness to experience" and its neural correlates of consciousness shift in treatment-resistant depression. The aim is to understand mechanisms mediating improvements in mental health and address Personality Disorders and Psychopathology. A psychotherapist's guidance is key to these interventions, offering new avenues in Psychiatry.
Abstract
This document is my Master's Thesis for the Research Master Cognitive Neuroscience program at Maastricht University. The present study investigated...
Synchrony and subjective experience: the neural correlates of the stream of consciousness.
Trends in cognitive sciences – May 15, 2025
Summary
Our moment-to-moment conscious experience emerges from a complex dance of brain activity. Research shows that the temporoparietal junction and gestalt cortex regions integrate sensory inputs with personal memories and expectations to create our unique stream of consciousness. This integration happens through synchronized neural activity, producing individualized interpretations that shape how we each uniquely experience reality.
Abstract
Human subjectivity, our first-person conscious experience of the world, is among the deepest scientific mysteries. This opinion article lays out an...
Neural correlates of treatment response to ketamine for treatment-resistant depression: A systematic review of MRI-based studies.
Psychiatry research – October 01, 2024
Summary
Ketamine offers new hope for people with severe depression who haven't responded to traditional treatments. Brain imaging reveals that this medication works by targeting specific neural networks linked to mood, pleasure, and negative thought patterns. Using magnetic resonance imaging, researchers found ketamine reduces anhedonia and suicidal thoughts by activating key brain regions involved in emotion processing. The treatment shows particular promise in reducing thought rumination in treatment-resistant depression.
Abstract
Treatment-resistant depression (TRD) is defined as patients diagnosed with depression having a history of failure with different antidepressants wi...
Mindful young brains and minds: a systematic review of the neural correlates of mindfulness-based interventions in youth.
Brain imaging and behavior – April 01, 2025
Summary
No Summary
Abstract
This systematic narrative review examines neuroimaging studies that investigated the neural correlates of mindfulness-based interventions in youth ...
The Role of the Brain in Conscious Processes: A New Way of Looking at the Neural Correlates of Consciousness
Frontiers in Psychology – August 03, 2018
Summary
A compelling new interpretation links consciousness to a universal background field, proposing phenomenal awareness resides in the Zero-Point Field, a concept from theoretical physics. Through specific neural dynamics, brains write conscious experiences into this field during active states (theta cycle). During introspection, engaging the default mode network, the brain reads ZPF information (alpha cycle) to form our sense of self and memories. Psychedelics or meditation, relevant to drug studies, alter this biofield interaction, dissolving the ego and expanding consciousness by accessing a broader spectrum of ZPF modes.
Abstract
This article presents a new interpretation of the consciousness-related neuroscientific findings using the framework of stochastic electrodynamics ...
Mindfulness meditation modulates stress-eating and its neural correlates.
Scientific reports – March 27, 2024
Summary
No Summary
Abstract
Stress-related overeating can lead to excessive weight gain, increasing the risk of metabolic and cardiovascular disease. Mindfulness meditation ha...
Neural Correlates of Psychedelic, Sleep, and Sedated States Support Global Theories of Consciousness.
bioRxiv : the preprint server for biology – October 23, 2024
Summary
No Summary
Abstract
Understanding neural mechanisms of consciousness remains a challenging question in neuroscience. A central debate in the field concerns whether con...
A practical measure of integrated information reveals alpha-band activity and the posterior cortex as neural correlates of arousal.
NeuroImage – July 18, 2025
Summary
No Summary
Abstract
The search for neurophysiological markers of consciousness and their neural substrates remains a focal point in neuroscience research. The integrat...
The Neural Correlates of Consciousness: A Spectral Exponent Approach to Diagnosing Disorders of Consciousness.
Brain sciences – April 04, 2025
Summary
Brain activity patterns reveal consciousness levels with remarkable precision. Scientists found that analyzing EEG biomarkers through a measure called the spectral exponent can reliably detect disorders of consciousness. By studying brain waves in 47 individuals, researchers discovered that specific electrical patterns strongly correlate with awareness levels and visual responsiveness. This breakthrough offers a more accurate way to diagnose unresponsive patients.
Abstract
Disorder of consciousness (DoC) poses diagnostic challenges due to behavioral assessment limitations. This study evaluates the spectral exponent (S...
Evidence of a hierarchical representation in bodily self-consciousness: the neural correlates of embodiment and presence in virtual worlds.
Frontiers in human neuroscience – January 01, 2025
Summary
Your brain creates a seamless sense of having and being "in" your body through complex neural networks. Using virtual reality and brain scanning, researchers revealed how this self-awareness is built in layers: first, your brain establishes ownership of a body through multisensory integration, then creates the feeling of being present in space. fMRI data showed this hierarchy at work in specific brain regions.
Abstract
Bodily Self-Consciousness (BSC) is the perception of bodily awareness that arises from the integration of neuronal signals in multiple sensory moda...
Ketamine Modulates the Neural Correlates of Reward Processing in Unmedicated Patients in Remission from Depression
medRxiv Preprint Server – December 07, 2020
Summary
Ketamine, a rapid antidepressant, uniquely modulates the brain's reward system. Research explored how ketamine affects reward circuit brain areas in people recovered from depression, even without symptom changes. Participants performed a reward task while receiving ketamine. Positive results showed ketamine significantly impacted reward-related brain areas, notably the nucleus accumbens and ventral tegmental area, particularly when processing smaller rewards. This suggests ketamine may improve anhedonia in depression by fine-tuning how the brain responds to positive feedback.
Abstract
Ketamine as an antidepressant improves anhedonia, a pernicious symptom of depression as early as 2h post-infusion. The effects of ketamine on anhed...
A dynamic bifurcation mechanism explains cortex-wide neural correlates of conscious access.
Cell reports – March 25, 2025
Summary
No Summary
Abstract
Conscious access is suggested to involve "ignition," an all-or-none activation across cortical areas. To elucidate this phenomenon, we carry out co...
Neural correlates of mindfulness meditation and hypnosis on magnetic resonance imaging: similarities and differences. A scoping review.
Journal of neuroradiology = Journal de neuroradiologie – March 01, 2024
Summary
No Summary
Abstract
Mindfulness meditation (MM) and hypnosis practices are gaining interest in mental health, but their physiological mechanisms remain poorly understo...
Neural correlates of the psychedelic state as determined by fMRI studies with psilocybin
Proceedings of the National Academy of Sciences – January 23, 2012
Summary
Psilocybin, a psychedelic compound from magic mushrooms, significantly alters consciousness by decreasing cerebral blood flow and brain activity, particularly in key regions like the anterior and posterior cingulate cortex (ACC and PCC). In a study with 30 healthy volunteers, those receiving psilocybin exhibited reduced connectivity between the medial prefrontal cortex (mPFC) and PCC. Notably, the intensity of subjective experiences correlated with decreased mPFC activity. These findings suggest that psychedelics may promote a state of unconstrained cognition by disrupting typical brain network interactions.
Abstract
Psychedelic drugs have a long history of use in healing ceremonies, but despite renewed interest in their therapeutic potential, we continue to kno...
Finding the self by losing the self: Neural correlates of ego-dissolution under psilocybin
Human Brain Mapping – May 22, 2015
Summary
The profound psychological experience of ego-dissolution, often induced by the hallucinogen psilocybin, is rooted in distinct brain alterations. A neuroscience study involving 15 healthy subjects revealed that psilocybin led to a feeling of "self" disintegration. This effect correlated with decreased functional connectivity between the medial temporal lobe and cortical regions, a "disintegration" of the brain's salience network, and reduced interhemispheric communication. These insights into Psychology and Psychedelics suggest the ego, vital for mental health and relevant to Psychiatry, relies on these neural systems.
Abstract
Ego-disturbances have been a topic in schizophrenia research since the earliest clinical descriptions of the disorder. Manifesting as a feeling tha...
Neural correlates of MDMA (“Ecstasy”)-induced social interaction in rats
Social Neuroscience – June 21, 2008
Summary
MDMA, commonly known as "Ecstasy," significantly enhances social behavior in male Wistar rats. In a study involving 80 rats, those treated with 5 mg/kg of MDMA and allowed social interaction displayed markedly increased social engagement compared to their untreated counterparts, showing heightened investigation behaviors. Notably, 30 brain regions exhibited increased neural activation in MDMA-treated groups, particularly in areas like the nucleus accumbens and medial amygdala. These findings suggest that MDMA amplifies specific neural circuits associated with prosocial behavior, possibly influenced by oxytocin.
Abstract
The popular drug 3,4 methylenedioxymethamphetamine (MDMA, "Ecstasy", "the Love Drug") produces feelings of love and closeness in humans and induces...
Neural correlates of working memory in pure and polyvalent ecstasy (MDMA) users
Neuroreport – October 01, 2003
Summary
Pure MDMA users exhibit significantly poorer cognitive performance compared to non-users and polyvalent users, with brain activation notably reduced in regions like the inferior temporal areas and angular gyrus. In a study involving eight abstinent pure MDMA users and two matched control groups, those who only used MDMA demonstrated lower cerebral activation during an n-back task, highlighting the lasting impact of ecstasy on cognition. Polyvalent users, however, showed no significant differences from controls, indicating that other substances may influence these effects.
Abstract
Poor cognitive performance in ecstasy (3,4-methylenedioxymethamphetamine; MDMA) users has been related to the well-recognized neurotoxic effects of...
Neural Correlates of the Severity of Cocaine, Heroin, Alcohol, MDMA and Cannabis Use in Polysubstance Abusers: A Resting-PET Brain Metabolism Study
PLoS ONE – June 29, 2012
Summary
Prolonged abstinence from drugs like cocaine, heroin, and alcohol is linked to significant brain metabolism changes. In a study with 49 polysubstance users, higher severity of heroin, alcohol, MDMA, and cannabis use correlated negatively with brain function in the dorsolateral prefrontal cortex and temporal cortex. Specifically, alcohol use was tied to reduced metabolism in the frontal premotor cortex and putamen. Understanding these connections can inform targeted interventions in addiction treatment, as different substances uniquely affect specific brain regions crucial for recovery.
Abstract
INTRODUCTION: Functional imaging studies of addiction following protracted abstinence have not been systematically conducted to look at the associa...
Neural correlates of ibogaine: Evidence from functional neuroimaging of military veterans
Biological Psychiatry Cognitive Neuroscience and Neuroimaging – February 01, 2026
Summary
No Summary
Abstract
Abstract not available from OpenAlex
Sub-acute effects of psilocybin on EEG correlates of neural plasticity in major depression: Relationship to symptoms
Journal of Psychopharmacology – June 30, 2023
Summary
A single psilocybin dose doubled specific brain activity linked to neuroplasticity, measured via Electroencephalography (EEG), in 19 individuals with depression. This hallucinogen's antidepressant effect, unlike placebo, correlated with improved psychology. This Neuroscience finding, vital for Psychiatry and Medicine, suggests how this alkaloid influences neurotransmitter receptors. While distinct from anesthesia, these Psychedelics and Drug Studies highlight chemical synthesis's role in advancing our understanding of behavior.
Abstract
Background: Evidence suggests that serotonergic psychedelics (e.g. psilocybin), have rapid-acting and long-lasting antidepressant effects after a s...
Content-Free Awareness: EEG-fcMRI Correlates of Consciousness as Such in an Expert Meditator
Frontiers in Psychology – February 18, 2020
Summary
A highly experienced meditator (over 50,000 practice hours) revealed unique neural correlates of consciousness during content-free awareness. Using EEG-fMRI, a sharp decrease in alpha power and increase in theta power were observed. Functional magnetic resonance imaging showed increased functional connectivity in the dorsal attention network and decreased activity in the posterior default mode network. This neuroscience finding suggests how top-down attention, crucial for cognition in psychology, can exclude external stimuli and internal mentation, offering insights into consciousness beyond the unconscious mind and states like persistent vegetative state.
Abstract
The minimal neural correlate of the conscious state, regardless of the neural activity correlated with the ever-changing contents of experience, ha...
The strength of neural entrainment to electronic music correlates with proxies of altered states of consciousness.
Frontiers in human neuroscience – January 01, 2025
Summary
Electronic music's hypnotic beats can sync with our brainwaves, potentially inducing altered states of consciousness. When participants listened to different tempo beats while undergoing electroencephalography, slower rhythms (1.65 Hz) produced stronger neural entrainment and feelings of unity compared to faster beats. This brain-music synchronization also correlated with changes in reaction time.
Abstract
In electronic music events, the driving four-on-the-floor music appears pivotal for inducing altered states of consciousness (ASCs). While various ...
The assumptions that restrain us from understanding consciousness
arXiv Preprint Archive – June 26, 2025
Summary
Our very assumptions about consciousness might be hindering its scientific understanding. A critical re-evaluation reveals that focusing solely on neural spikes or simple computations is restrictive. This q-bio.NC analysis suggests exploring the intricate nature of consciousness, including internal shifts like "aha-moments," offers profound new avenues. Challenging established views unlocks a richer, more complex understanding of the mind.
Abstract
The science of consciousness has been successful over the last decades. Yet, it seems that some of the key questions remain unanswered. Perhaps, as...
Windows to Consciousness: The Role of Fronto-Parietal Connectivity in Anesthesia-Induced Unconsciousness.
Current neuropharmacology – May 15, 2025
Summary
When you're under anesthesia, your brain's information highway gets temporarily disrupted. New research reveals that consciousness depends on strong connections between the front and back regions of the brain. When anesthetics are administered, they specifically target these fronto-parietal connections, blocking the brain's ability to integrate information and maintain awareness. This explains why we lose consciousness during surgery.
Abstract
The exploration of consciousness and the elucidation of the mechanisms underlying general anesthesia are two intertwined endeavors that have signif...
Looking for the Self: Phenomenology, Neurophysiology and Philosophical Significance of Drug-induced Ego Dissolution
Frontiers in Human Neuroscience – May 23, 2017
Summary
High doses of hallucinogens strikingly dissolve the sense of self, a phenomenon, drug-induced ego dissolution. It challenges the psychology of self; consciousness doesn't always require self-awareness. Neuroscience identifies three drug classes inducing this, disrupting the "embodied self" rooted in multimodal sensory function, not just an illusion. Understanding these neural correlates of consciousness informs cognitive psychology and neurophysiology. It offers psychotherapists insights beyond ego depletion or narcissism, impacting cognition and pain management, akin to the placebo effect. This deep dive into the ego provides a unique lens for phenomenology.
Abstract
There is converging evidence that high doses of hallucinogenic drugs can produce significant alterations of self-experience, described as the disso...
Neural field modeling and analysis of consciousness states in the brain.
Neuroscience of consciousness – January 01, 2025
Summary
Neural field theory (NFT) offers a powerful lens for understanding consciousness, successfully differentiating healthy brains from those with disorders of consciousness. By fitting an NFT model to EEG data, clear correlations emerged between model parameters and the neural correlates of consciousness. This neural activity modeling illuminates how consciousness levels are represented within the NFT framework, offering valuable insights into brain dynamics across normal and pathological states. It pinpoints potential biomarkers, underscoring NFT's utility for advancing consciousness research.
Abstract
Understanding the neural correlates of consciousness remains a central challenge in neuroscience. In this study, we explore the potential of neural...
Where's My Consciousness-Ometer? How to Test for the Presence and Complexity of Consciousness.
Perspectives on psychological science : a journal of the Association for Psychological Science – July 01, 2022
Summary
No Summary
Abstract
Tools and tests for measuring the presence and complexity of consciousness are becoming available, but there is no established theoretical approach...
Ketamine's Amelioration of Fear Extinction in Adolescent Male Mice Is Associated with the Activation of the Hippocampal Akt-mTOR-GluA1 Pathway.
Pharmaceuticals (Basel, Switzerland) – May 22, 2024
Summary
Ketamine shows promise in treating fear-related disorders by enhancing the brain's ability to overcome fearful memories. New research reveals that this drug activates specific pathways in the hippocampus and prefrontal cortex during adolescence, a critical period for emotional development. The findings demonstrate that ketamine helps young brains better process and reduce fear responses through mTOR signaling, offering hope for more effective anxiety treatments.
Abstract
Fear-related disorders, including post-traumatic stress disorder (PTSD), and anxiety disorders are pervasive psychiatric conditions marked by persi...
Ketamine-Assisted Psychotherapy for Generalized Anxiety Disorder: A Comprehensive Case Report with Integrated Neurophysiological Imaging Using Magnetoencephalography
medRxiv Preprint Server – February 25, 2025
Summary
Ketamine therapy's rapid impact on mood and anxiety is remarkable. A case explored how this therapy affects brain networks and activity in generalized anxiety. Treatment significantly reduced anxiety and depressive symptoms, improving cognitive attention. Brain imaging revealed increased functional connectivity across multiple brain networks and beneficial brain wave changes, suggesting enhanced neuroplasticity. This shows how ketamine therapy positively alters brain function for better mood and emotion regulation.
Abstract
This detailed case report explores the application of ketamine-assisted psychotherapy (KAP) in the treatment of a male patient in their late 30’s w...
State-related Electroencephalography Microstate Complexity during Propofol- and Esketamine-induced Unconsciousness.
Anesthesiology – May 01, 2024
Summary
No Summary
Abstract
Identifying the state-related "neural correlates of consciousness" for anesthetics-induced unconsciousness is challenging. Spatiotemporal complexit...
MDMA Increases Cooperation and Recruitment of Social Brain Areas When Playing Trustworthy Players in an Iterated Prisoner's Dilemma
Journal of Neuroscience – November 19, 2018
Summary
Psychedelics and Drug Studies reveal a fascinating aspect of social psychology: MDMA boosts cooperation, but only with trustworthy partners. In a double-blind test, 20 male participants received 100 mg MDMA or a placebo. Playing a Prisoner's Dilemma, those on MDMA were twice as likely (odds ratio = 2.01) to cooperate with reliable opponents. This Neuroscience finding, relevant to the Psychology of Moral and Emotional Judgment, shows MDMA's neurotransmitter receptor influence on behavior, affecting brain regions like the Insula and highlighting the context-specific nature of this social dilemma.
Abstract
Social decision-making is fundamental for successful functioning and can be affected in psychiatric illness and by serotoninergic modulation. The P...
Consciousness and the fallacy of misplaced objectivity.
Neuroscience of consciousness – January 01, 2021
Summary
No Summary
Abstract
Objective correlates-behavioral, functional, and neural-provide essential tools for the scientific study of consciousness. But reliance on these co...
Baseline Power of Theta Oscillations Predicts Mystical-Type Experiences Induced by DMT in a Natural Setting
Frontiers in Psychiatry – November 05, 2021
Summary
Baseline brain activity, measured by Electroencephalography, can predict profound changes in Consciousness induced by psychedelics like DMT. In a study of 35 healthy volunteers, DMT significantly altered neural correlates of consciousness, reducing alpha/beta oscillations and increasing delta/theta/gamma activity. Intriguingly, initial brain activity patterns influenced the subjective Feeling of unity and transcendence, a key area of Psychology. This suggests understanding Neurotransmitter Receptor Influence on Behavior through baseline brain activity could enhance therapeutic outcomes in Psychedelics and Drug Studies.
Abstract
N,N-Dimethyltryptamine (DMT) is a classic psychedelic capable of inducing short-lasting but profound changes in consciousness. As with other psyche...
Ayahuasca-inspired DMT/HAR formulation reduces brain differentiation between self and other faces.
NeuroImage – June 01, 2025
Summary
Psychedelics like ayahuasca can blur the line between self and other - now scientists know why. Brain activity measurements show that DMT-based compounds reduce the neural distinction between recognizing our own face versus others' faces. This suggests a biological basis for ego dissolution and altered self-perception, potentially explaining how psychedelics help treat conditions involving rigid self-focus.
Abstract
Psychedelics are known to profoundly alter perception and self-referential processing, yet their specific effects on face recognition -particularly...
Functional neuroimaging of psychedelic experience: An overview of psychological and neural effects and their relevance to research on creativity, daydreaming, and dreaming
arXiv Preprint Archive – May 23, 2016
Summary
Brain imaging reveals psychedelic states share neural patterns with creativity and vivid dreaming. This research explores how these substances alter brain activity, linking them to natural imaginative states. Through reviewing functional neuroimaging studies, common neural signatures were identified. Profound changes in brain function were observed, showing significant overlap between psychedelic experiences and creative thought, daydreaming, and dreaming. This offers exciting insights into the q-bio.nc of consciousness and human imagination.
Abstract
Humans have employed an incredible variety of plant-derived substances over the millennia in order to alter consciousness and perception. Among the...
Psilocybin-induced default mode network hypoconnectivity is blunted in alcohol-dependent rats
Translational Psychiatry – December 14, 2023
Summary
Neuroscience reveals psilocybin, a potent hallucinogen, may require personalized dosing for Alcohol Use Disorder (AUD). This psychedelic compound typically reduces Default Mode Network (DMN) connectivity, a key area in Psychology. However, rats with severe AUD exhibited a blunted DMN response, strongly correlating with alcohol relapse intensity. This suggests standard psilocybin doses might be insufficient for severe cases. This pharmacology insight, vital for Medicine and Psychiatry, highlights Neurotransmitter Receptor Influence on Behavior and Tryptophan and brain disorders in AUD treatment.
Abstract
Abstract Alcohol Use Disorder (AUD) adversely affects the lives of millions of people, but still lacks effective treatment options. Recent advancem...
The neurobiology of altered states of consciousness induced by drumming and other rhythmic sound patterns.
Annals of the New York Academy of Sciences – July 16, 2025
Summary
No Summary
Abstract
Humans have long sought to alter their mental states through various cultural practices, with rhythmic sounds emerging as a prominent and enduring ...
Human brain effects of DMT assessed via EEG-fMRI.
Proceedings of the National Academy of Sciences of the United States of America – March 28, 2023
Summary
Dimethyltryptamine (DMT), a powerful psychedelic found naturally in ayahuasca, dramatically alters consciousness by acting on serotonin receptors in the brain. Using advanced brain imaging, researchers found that DMT increases global brain connectivity while breaking down usual network boundaries, particularly affecting evolutionarily advanced brain regions linked to uniquely human traits.
Abstract
Psychedelics have attracted medical interest, but their effects on human brain function are incompletely understood. In a comprehensive, within-sub...
Meditation in the third-person perspective modulates minimal self and heartbeat-evoked potentials.
NeuroImage – July 01, 2025
Summary
No Summary
Abstract
Experienced meditation practitioners often report altered states of their sense of self, including decentering and distancing the self from the bod...
Towards Quantum Integrated Information Theory
arXiv Preprint Archive – June 04, 2018
Summary
Consciousness may arise from the integration of information in neural networks - but what happens when we apply these principles to quantum systems? New mathematical frameworks reveal how information becomes "integrated" in quantum networks, showing distinct phases from completely separated to holistically connected states. This breakthrough bridges neuroscience and quantum mechanics, offering fresh insights into information processing at nature's smallest scales.
Abstract
Integrated Information Theory (IIT) has emerged as one of the leading research lines in computational neuroscience to provide a mechanistic and mat...
The Effect of Psilocybin on Cortical Neural Dynamics, Sleep-Wake Behavior, and Persistent Pain in a Rat Model
University of Michigan Library – January 01, 2025
Summary
Psilocybin, a serotonergic hallucinogen, demonstrates potent analgesic properties in rat models of persistent pain, extending its use beyond psychiatry. This medicine shows promise for chronic pain conditions like fibromyalgia and neuropathic pain, addressing nociplastic pain's complex etiology. Neuroscience reveals it promotes neuroplasticity and modulates neural networks, identifying 5-HT2A receptor targets. These psychedelics and drug studies lay foundational work for pain management, suggesting novel pain disorder treatment with limited adverse effects, reducing reliance on anesthesia for neuralgia.
Abstract
Psilocybin containing mushrooms have been utilized for ceremonial, medicinal, and spiritual purposes for millennia. Recently there has been a surge...
Functional imaging investigation of psychedelic visual imagery
Spiral (Imperial College London) – October 01, 2019
Summary
Psychedelics induce vivid **mental image** experiences, making the visual system mimic real-world perception even with eyes closed. **Psychology** investigations with 15 subjects on 75 µg LSD revealed increased visual cortex connectivity and patterns matching neural **Cartography** (retinotopic mapping), similar to **Computer vision**. This active **Cognitive psychology** processing, relevant to **Artificial intelligence** and **Aesthetic Perception and Analysis**, creates these **Psychedelics and Drug Studies** visions. 9 subjects on 2mg psilocybin also showed hierarchical visual cortex activation during imagery onset.
Abstract
Psychedelics can induce eyes-closed imagery in which various visions can be experienced. These visions vary from simple geometrical patterns, to mo...
Functional connectivity changes in meditators and novices during yoga nidra practice.
Scientific reports – June 05, 2024
Summary
No Summary
Abstract
Yoga nidra (YN) practice aims to induce a deeply relaxed state akin to sleep while maintaining heightened awareness. Despite the growing interest i...
Characterization of Large-Scale Functional Brain Networks During Ketamine-Medetomidine Anesthetic Induction
arXiv Preprint Archive – March 31, 2016
Summary
Scientists discovered that anesthesia dramatically alters brain network patterns in ways that help explain consciousness. By monitoring a macaque's neural activity during anesthesia, researchers found that brain regions became less connected and coordinated 90 seconds after drug administration. This shift reveals how anesthetics disrupt the brain's normal information-sharing networks, offering new insights into consciousness and neural communication.
Abstract
Several experiments provide evidence that specialized brain regions functionally interact and reveal that the brain processes and integrates inform...
Conscious tactile perception entails distinct neural dynamics within somatosensory areas.
Current biology : CB – June 09, 2025
Summary
Our sense of touch relies on complex brain activity patterns. Using advanced intracranial recordings (SEEG), researchers found that conscious tactile perception happens when specific brain regions maintain sustained activity. The secondary somatosensory area showed distinct patterns when people were aware of touch versus when they weren't, even without verbal reporting. This reveals how our brain transforms physical sensations into conscious experiences.
Abstract
Distilling the neural correlates of consciousness (NCCs) in humans is challenging due to limitations in the spatiotemporal resolution of recording ...
Neurobiological Correlates of Psychedelic Experiences and Psychedelic-Associated Adverse Effects.
Current topics in behavioral neurosciences – July 31, 2024
Summary
No Summary
Abstract
This chapter offers a comprehensive overview of our current understanding of the neural mechanisms underlying the effects of psychedelic drugs, wit...
Effects of external stimulation on psychedelic state neurodynamics
OpenAlex – November 02, 2020
Summary
Psychedelics reliably enhance brain entropy, a measure of neural signal diversity, which typically decreases with loss of consciousness. Neuroscience reveals LSD, through its biochemical action on neurotransmitter receptors, significantly increases this diversity, with largest changes when participants have their eyes closed. This finding from Psychedelics and Drug Studies highlights how external stimulus profoundly influences cognitive psychology and subjective experience. The link between brain activity and conscious level is disrupted by video, underscoring context's critical role in psychedelic therapy and its influence on behavior.
Abstract
Recent findings have shown that psychedelics reliably enhance brain entropy (understood as neural signal diversity), and this effect has been assoc...
Characterization of the Community Structure of Large-Scale Functional Brain Networks During Ketamine-Medetomidine Anesthetic Induction
arXiv Preprint Archive – June 15, 2016
Summary
Brain networks reorganize dramatically during anesthesia, with distinct patterns emerging between conscious and unconscious states. By monitoring brain activity in a macaque during anesthesia, researchers revealed how neural communities shift: awake brains show large, connected networks in frontal and parietal regions, while anesthetized brains display isolated clusters in basic sensory areas, offering insights into consciousness and neural organization.
Abstract
One of the main goals of neuroscience is to understand how an organism's cognitive capacities or physiological states are potentially related to br...
Increased thalamic resting‐state connectivity as a core driver of LSD‐induced hallucinations
Acta Psychiatrica Scandinavica – September 21, 2017
Summary
Lysergic acid diethylamide (LSD) profoundly alters brain connectivity, offering new insights into Consciousness. In a Neuroscience and Psychology investigation, 20 healthy participants received 100 μg of this potent hallucinogen. Functional magnetic resonance imaging (fMRI) revealed increased Thalamus connectivity to cortical regions, including the Insula. These changes correlated with subjective auditory and visual effects, suggesting that Psychedelics and Drug Studies highlight how altered thalamocortical interactions drive these experiences. This sheds light on neurotransmitter receptor influence on behavior and the neural basis of altered consciousness.
Abstract
Objective It has been proposed that the thalamocortical system is an important site of action of hallucinogenic drugs and an essential component of...
Safety, tolerability, and clinical and neural effects of single-dose psilocybin in obsessive–compulsive disorder: protocol for a randomized, double-blind, placebo-controlled, non-crossover trial
Frontiers in Psychiatry – April 25, 2023
Summary
Psilocybin shows promise for severe obsessive-compulsive disorder (OCD). A randomized controlled trial is investigating this hallucinogen's potential, enrolling 30 adults with Obsessive-Compulsive Spectrum Disorders unresponsive to standard medicine. Participants receive a single psilocybin dosing (0.25 mg/kg) or placebo in a non-crossover design. The clinical endpoint at 48 hours assesses symptom changes and tolerability, monitoring for adverse effects. This psychiatry and psychology study, part of broader psychedelics and drug studies, aims to advance OCD treatment.
Abstract
Background Psilocybin may help treat obsessive–compulsive disorder (OCD). To date, only one open-label study of psilocybin for OCD exists, necessit...
Neurobiological research on N,N-dimethyltryptamine (DMT) and its potentiation by monoamine oxidase (MAO) inhibition: from ayahuasca to synthetic combinations of DMT and MAO inhibitors.
Cellular and molecular life sciences : CMLS – September 10, 2024
Summary
Ayahuasca, the ancient Amazonian brew, combines DMT (a powerful psychedelic) with natural MAO inhibitors called β-carbolines. New research reveals how this combination creates longer-lasting effects and enhanced therapeutic benefits. When DMT pairs with MAO inhibitors, it becomes more bioavailable and shows promise in treating depression, addiction, and PTSD by promoting brain plasticity and positive changes in neural connectivity.
Abstract
The potent hallucinogen N,N-dimethyltryptamine (DMT) has garnered significant interest in recent years due to its profound effects on consciousness...
We are the Sensors of Consciousness! A Review and Analysis on How Awakenings During Sleep Influence Dream Recall.
Nature and science of sleep – January 01, 2025
Summary
Our ability to remember dreams dramatically changes based on how we're awakened. Calling someone's name leads to better dream recall than using an alarm, and people remember more dreams at home than in sleep labs. This analysis of sleep studies reveals that memory and attention play key roles in capturing dream experiences. Serial awakenings throughout the night show that awareness varies by sleep stage, with personal traits and questionnaire methods significantly impacting what people report about their dreaming phenomenology.
Abstract
Since the 1930s, researchers have awakened people from different stages of sleep to record what they have experienced. While some aspects, includin...
Subcortical correlates of consciousness with human single neuron recordings.
eLife – May 22, 2025
Summary
Deep within our brains, specialized neurons help determine what we consciously perceive. Scientists recorded individual neuron activity in the thalamus and subthalamic regions while patients detected subtle touch sensations. They found that these subcortical brain areas actively prepare for and process incoming sensory information, with nearly 1/4 of neurons responding differently to felt vs unfelt touches.
Abstract
Subcortical brain structures such as the subthalamic nucleus or the thalamus are involved in regulating motor and cognitive behavior. However, thei...
Sensitivity to visual features in inattentional blindness.
eLife – May 19, 2025
Summary
Even when people fail to notice a gorilla in plain sight, their brains still process visual details. Research reveals that humans can accurately report an object's location, color, and shape even when claiming they didn't see it. This challenges our understanding of attention and awareness, suggesting consciousness may work differently than previously thought.
Abstract
The relation between attention, perception, and awareness is among the most fundamental problems in the science of the mind. One of the most striki...