consciousness – mycolab.ai

Synergistic, multi-level understanding of psychedelics: three systematic reviews and meta-analyses of their pharmacology, neuroimaging and phenomenology

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This comprehensive study analyzed three classic psychedelic drugs—LSD, psilocybin (from magic mushrooms), and DMT—across three levels: how people experience them, how they affect brain activity, and how they interact with brain receptors. Researchers found that LSD produces more intense visual experiences than psilocybin, and all three drugs significantly alter brain connectivity patterns. The study highlights the importance of standardizing research methods to better understand how these compounds might help treat depression and addiction.

Psilocybin-induced modulation of visual salience processing

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When people take psilocybin mushrooms, they look at images differently – they focus more on visually striking regions while keeping their eyes in smaller areas. Brain recordings showed changes in electrical activity patterns. The research suggests psilocybin alters how the brain balances what naturally catches attention versus where we intentionally choose to look.

Enhanced visual contrast suppression during peak psilocybin effects: Psychophysical results from a pilot randomized controlled trial

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Researchers studied how psilocybin affects the way our visual system processes contrast and surrounding visual information. Participants completed vision tests after taking psilocybin or placebo, and the results showed that psilocybin made people more influenced by surrounding visual elements when judging the brightness of objects. Interestingly, the stronger the visual effects people experienced from psilocybin, the more their perception was influenced by these surroundings. This finding might help explain how psilocybin affects mood and could help scientists better understand depression and other conditions affecting vision.

Transient destabilization of whole brain dynamics induced by N,N-Dimethyltryptamine (DMT)

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This study used computer models of brain activity to understand how the psychedelic drug DMT rapidly changes how the brain works during an acute experience. Researchers found that DMT pushes brain dynamics into a special state where the brain becomes hypersensitive to small changes or stimuli. This heightened sensitivity is strongest in brain regions rich in serotonin receptors and matches the expected timing of the drug’s effects, suggesting that brief psychedelic experiences may create lasting changes in the brain through this temporary destabilization window.

The central role of the Thalamus in psychosis, lessons from neurodegenerative diseases and psychedelics

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This paper explores how the thalamus, a key brain structure controlling attention and perception, malfunctions in Parkinson’s disease and similar neurological conditions, causing hallucinations and delusions. Interestingly, these symptoms resemble the altered mental states produced by psychedelic drugs like LSD and psilocybin. By studying both conditions together, researchers found that a common mechanism called thalamocortical dysrhythmia disrupts how the brain filters information and processes reality, offering new insights for treating psychotic symptoms.

Why psychedelic-assisted therapy studies in eating disorders risk missing the mark on outcomes: a phenomenological psychopathology perspective

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This scientific commentary examines how research on psychedelic-assisted therapy for eating disorders may be missing important aspects of how people actually experience the treatment. The authors argue that current study methods rely too heavily on questionnaires that don’t capture the full depth of what people experience during psychedelic sessions. They propose using phenomenological approaches—methods that deeply explore lived experience—to better understand which aspects of the psychedelic experience actually lead to recovery from eating disorders.

The Afterglow Inventory (AGI): Validation of a new instrument for measuring subacute effects of classic serotonergic psychedelics

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Researchers created a new questionnaire called the Afterglow Inventory to measure the positive effects people experience in the days and weeks after using psychedelics like psilocybin and LSD. These ‘afterglow’ effects include improved mood, feelings of spiritual connection, increased creativity, and better relationships. The study with over 1,300 participants showed the questionnaire works well at measuring these effects, which could help researchers better understand how psychedelics might help treat depression and other conditions.

Adaptation and latent structure of the Brazilian version of the Ego Dissolution Inventory (EDI-BR): an exploratory study

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This study adapted a psychological assessment tool called the Ego Dissolution Inventory for use in Brazil. Ego dissolution refers to the profound sense of losing one’s sense of self that people experience when using psychedelics like psilocybin mushrooms and LSD. The researchers found that the adapted Brazilian version works well and identifies three dimensions of the experience: confidence/assertiveness, ego dissolution, and ego inflation. This validated tool can now help researchers in Brazil better understand psychedelic experiences and their potential therapeutic benefits.

Research Topic: consciousness