Brain connectivity – mycolab.ai

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.

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.

The therapeutic potential of microdosing psychedelics in depression

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This review examines whether taking very small doses of psychedelic drugs like LSD and psilocybin might help treat depression. While users report benefits and some studies show subtle positive effects on mood and thinking, scientists have not yet confirmed whether microdosing actually works as a depression treatment. More research with depressed patients is needed to understand if this approach is truly helpful and safe for regular use.

N,N-dimethyltryptamine effects on connectome harmonics, subjective experience and comparative psychedelic experiences

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Researchers studied how DMT, a powerful psychedelic drug, changes brain activity patterns and how these changes relate to what people experience. Using advanced brain imaging and network analysis, they found that DMT shifts brain activity away from large-scale network patterns toward smaller, more diverse patterns. Importantly, these brain changes directly tracked with how intensely participants reported experiencing the drug’s effects moment-to-moment.

Psilocin, LSD, mescaline, and DOB all induce broadband desynchronization of EEG and disconnection in rats with robust translational validity

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Researchers tested how different psychedelic drugs affect brain electrical activity in rats using EEG recordings. They found that psilocin, LSD, mescaline, and DOB all produced similar patterns of decreased brain activity and reduced communication between brain regions. Importantly, these effects in rats closely matched what scientists observe in human brain studies, suggesting that rats can be useful for understanding how psychedelics work in the brain.

Neural mechanisms underlying psilocybin’s therapeutic potential – the need for preclinical in vivo electrophysiology

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Psilocybin, the active compound in magic mushrooms, shows promise for treating depression and other mental health conditions. This review examines how psilocybin works in the brain, particularly by affecting brain regions involved in self-reflection and emotion regulation. The authors argue that new brain recording techniques are needed to fully understand how psilocybin produces its beneficial effects, which could help improve treatments for people with severe depression.

Long term worsening of amyloid pathology, cerebral function, and cognition after a single inoculation of beta-amyloid seeds with Osaka mutation

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Researchers found that a single exposure to mutated amyloid-beta proteins (Aβ Osaka) in the brains of genetically modified mice caused lasting damage over four months. The mutated proteins triggered more severe memory loss, brain connectivity problems, and synapse damage compared to normal amyloid-beta. This suggests that even one encounter with mutated amyloid proteins can set off a chain reaction of disease progression that persists long after initial exposure.

Research Keyword: Brain connectivity