Neuroimaging – mycolab.ai

Improved mental health outcomes and normalised spontaneous EEG activity in veterans reporting a history of traumatic brain injuries following participation in a psilocybin retreat

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Researchers studied how psilocybin mushrooms given in a retreat setting could help military veterans with traumatic brain injuries who also experienced mental health problems like PTSD and depression. Veterans participated in guided psilocybin ceremonies and showed significant improvements in depression, anxiety, and overall quality of life, along with positive changes in their brain activity patterns measured by EEG. The study suggests that psilocybin retreats may be a promising therapeutic approach for this vulnerable population and supports the need for larger research studies.

Associations Between Escitalopram and Psilocybin Therapy and Brain Resting-State Functional Connectivity in Major Depressive Disorder

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This study compared how two depression treatments—a common antidepressant called escitalopram and psilocybin therapy—affect brain connectivity and depression symptoms. Both treatments reduced feelings of lacking pleasure and impulsive behaviors in depressed patients. The research found that while both worked, they affected different parts of the brain’s reward system in distinct ways, suggesting they may work through different mechanisms.

Exploring the neurobiological correlates of psilocybin-assisted psychotherapy in eating disorders: a review of potential methodologies and implications for the psychedelic study design

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This review examines how psilocybin-assisted therapy might work for eating disorders by looking at various ways to measure changes in the brain. The authors discuss different brain imaging techniques and other tools that scientists could use to understand how psilocybin affects the brains of people with eating disorders. They emphasize that combining multiple measurement approaches provides the best understanding of how this emerging treatment works and can guide future research and clinical applications.

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.

Ketamine induces multiple individually distinct whole-brain functional connectivity signatures

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This study examined how ketamine, a promising depression treatment, affects different people’s brains in different ways. Rather than averaging brain scans across all participants, researchers looked at individual differences and found that each person showed unique patterns of brain activity changes. The research suggests that personalized approaches to ketamine treatment, based on individual brain responses, could help identify which patients would benefit most from the therapy.

Meditation, psychedelics, and brain connectivity: A randomized controlled resting-state fMRI study of N,N-dimethyltryptamine and harmine in a meditation retreat

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Researchers studied how meditation combined with a psychedelic compound called DMT affects the brain. They scanned 40 experienced meditators before and after a 3-day retreat, with some receiving the psychedelic and others a placebo. While meditation alone reduced connections between different brain networks, the psychedelic enhanced certain connections, suggesting the two practices may complement each other in promoting mental health.

Biological markers of treatment response to serotonergic psychedelic therapies: a systematic review

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This review examines how scientists can predict which patients will benefit most from psychedelic-assisted therapy for depression by measuring biological markers in the brain and blood. Researchers found that certain brain changes and protein levels—particularly involving the amygdala, specific brain regions, and inflammation markers—appear linked to treatment success. While the current studies are small, they suggest that measuring these biological markers could eventually help doctors personalize psychedelic treatments for depression.

Molecular and Functional Imaging Studies of Psychedelic Drug Action in Animals and Humans

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This comprehensive review examines how scientists use advanced imaging techniques like PET and SPECT scans to study how hallucinogenic drugs such as LSD and psilocybin interact with the brain. The research shows these drugs primarily bind to serotonin receptors, particularly the 5-HT2A subtype, which appear responsible for producing hallucinations. While scientific understanding of hallucinogen mechanisms has advanced significantly, there is still much to learn about their complete effects on brain chemistry and their potential therapeutic applications.

Psilocybin-induced changes in neural reactivity to alcohol and emotional cues in patients with alcohol use disorder: An fMRI pilot study

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This pilot study examined how psilocybin affects the brains of people with alcohol use disorder. Using brain imaging (fMRI), researchers found that psilocybin increased activity in brain regions associated with decision-making and emotional control while decreasing activity in regions linked to cravings. These findings suggest psilocybin may help people with alcohol addiction by enhancing their ability to regulate emotions and resist urges to drink.

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.

Research Topic: Neuroimaging