Lysergic acid diethylamide (LSD) produces pronounced subjective drug effects, increases blood pressure, heart rate, and body temperature, and causes side effects in healthy individuals, according to a meta-analysis of existing studies. The analysis quantifies the magnitude of these physiological and psychological responses, supporting the renewed interest in using LSD in psychiatric research and therapy.
The Tensor Brain (TB) is a computational model of perception and memory with two layers: a representation layer modeling the subsymbolic global workspace and an index layer containing symbolic labels for concepts, time, and predicates. Sensory input activates the representation layer, which triggers associated symbols (bottom-up), while symbols can also activate the representation layer to influence perception (top-down), enabling semantic memory. Concept embeddings serve as connection weights linking the layers, consolidating knowledge from diverse experiences and modalities into a unified learning and memory framework.