Research Keyword: EEG

If psychedelics heal, how do they do it?

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Psychedelic drugs like MDMA and magic mushrooms are showing remarkable promise in treating serious mental health conditions like PTSD and depression, with clinical trials demonstrating higher success rates than traditional therapy alone. However, scientists still don’t fully understand how these drugs work at the molecular and brain level, or whether the hallucinations they produce are necessary for healing. Researchers are investigating whether modified versions without hallucinations could provide the same benefits while being easier to administer, while also exploring how individual factors and treatment environment affect outcomes.

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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.

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Network control energy reductions under DMT relate to serotonin receptors, signal diversity, and subjective experience

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Researchers studied how DMT affects the brain’s ability to switch between different activity patterns. Using simultaneous brain imaging (fMRI) and electrical recordings (EEG), they found that DMT makes these transitions easier and less energy-intensive. The effects occurred primarily in brain regions with high levels of serotonin 2a receptors and were accompanied by increased complexity of brain signals and stronger subjective drug effects.

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Exploring neural markers of dereification in meditation based on EEG and personalized models of electrophysiological brain states

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Researchers developed a new brain-monitoring technique called the Inner Dereification Index that can detect when someone is meditating versus mind-wandering using only a brief EEG recording. By analyzing electrical activity in specific brain regions involved in self-awareness and personal thoughts, the method can accurately track meditation progress in real-time with 99.6% accuracy. The technique works with minimal training data and shows that certain meditation practices—particularly Tibetan Buddhist techniques aimed at experiencing the emptiness of self—create distinctive brain patterns. This breakthrough could enable real-time meditation feedback devices and personalized meditation guidance.

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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.

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