Advanced concentrative absorption meditation, such as the jhanas, involves volitional mental absorption that can be scientifically studied. This paper argues that these states represent a distinct category of meditative experience characterized by deep, effortless focus and profound well-being. It proposes a scientific framework for understanding these measurable states of consciousness, drawing on existing research to outline how absorption, concentration, and positive outcomes like well-being can be systematically investigated. The authors suggest that developing a rigorous scientific approach to jhana and similar practices could bridge contemplative traditions and consciousness research, offering new insights into the nature of deep meditative states and their potential benefits.
This registered clinical trial protocol describes a planned study of Heart-Smile Training (HST), a compassion-based meditation program that cultivates awareness of heart-area bodily signals (interoception), for people with depression. The study aims to test the feasibility of the intervention and research procedures and to investigate neurocardiac mechanisms, specifically changes in the Heartbeat Evoked Potential measured by EEG. Fifty participants will be randomly assigned to a 4-week HST group or a waitlist control. Outcomes include depression severity, EEG gamma activity, heart rate variability, and psychological measures of self-compassion, mindfulness, and social connectedness. Results are not yet available.