Lysergic acid diethylamide (LSD) is the prototypical psychedelic drug, but its effects on the human brain have never been studied before with modern neuroimaging. Here, three complementary neuroimag-ing techniques: arterial spin labeling (ASL), blood oxygen level- dependent (BOLD) measures, and
Current and former ecstasy users report different sleep to matched controls: a web-based questionnaire study This study sought to test the association between ecstasy use and abnormal sleep. An anonymous web-based questionnaire containing questions on drug use and sleep was
Waves of the Unconscious: The Neurophysiology of Dreamlike Phenomena and Its Implications for the Psychodynamic Model of the Mind This paper reviews scientific literature on four subjective states: the dream state, the dreamy state of temporal lobe epilepsy and temporal
Was it a vision or a waking dream? A commentary on Disrupting posterior cingulate connectivity disconnects consciousness from the external environment by Herbet, G., Lafargue, G., de Champfleur, N. M., Moritz-Gasser, S., le Bars, E., Bonnetblanc, F., et al. (2014).
How do hallucinogens work on the brain? Robin Carhart-Harris, Mendel Kaelen and David Nutt consider a big question on several levels The ‘classic’ hallucinogens – such as LSD (derived from ergotamine found in ergot fungi), dimethyltryptamine (DMT, the major hallucinogenic
Spatial Dependencies between Large-Scale Brain Networks Functional neuroimaging reveals both increases (task-positive) and decreases (task-negative) in neural activation with many tasks. Many studies show a temporal relationship between task positive and task negative networks that is important for efficient cognitive
Functional Connectivity Measures After Psilocybin Inform a Novel Hypothesis of Early Psychosis Psilocybin is a classic psychedelic and a candidate drug model of psychosis. This study measured the effects of psilocybin on resting-state network and thalamocortical functional connectivity (FC) using functional
The effects of psilocybin and MDMA on between-network resting state functional connectivity in healthy volunteers Perturbing a system and observing the consequences is a classic scientific strategy for understanding a phenomenon. Psychedelic drugs perturb consciousness in a marked and novel