Psychedelics – Page 2

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.

Negative affective bias in depression following treatment with psilocybin or escitalopram – a secondary analysis from a randomized trial

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This research compared how psilocybin mushrooms and escitalopram (a common antidepressant) affect the way depressed people perceive emotions. Both treatments helped patients become better at recognizing positive facial expressions and less likely to misinterpret neutral or positive faces as negative. Interestingly, while both treatments improved emotional processing similarly, the improvements were connected to later mood improvement in different ways for each drug, suggesting they may work through somewhat different mechanisms in the brain.

Simultaneous cannabis and psychedelic use among festival and concert attendees in Colorado: characterizing enhancement and adverse reactions using mixed methods

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This study surveyed music festival and concert attendees in Colorado about their experiences using cannabis and psychedelics together. Researchers found that most people reported cannabis made their psychedelic experience better by reducing anxiety, enhancing mood, or intensifying effects. Only a small percentage experienced negative effects like increased anxiety or confusion. The study suggests cannabis may help people manage difficult psychedelic trips, though more research is needed to understand how different types and amounts of cannabis affect outcomes.

Behavioral Phenotyping and Metabolomic Comparison of Chemically Synthesized Psilocybin and Psychedelic Mushroom Extract in a Zebrafish Depression Model

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Researchers compared chemically made psilocybin with whole mushroom extract in zebrafish to test for depression-like effects. Both treatments reversed depressive behaviors and produced similar changes in brain chemicals, though the mushroom extract showed more neurotransmitter precursors. This study demonstrates that zebrafish can be useful models for studying how psychedelics might help treat depression.

Psychotomimetic compensation versus sensitization

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This paper proposes a new way to understand why drugs that can cause psychosis-like effects (such as psilocybin, LSD, and ketamine) can also help treat depression and anxiety. The authors suggest that these drugs trigger compensatory responses in the brain that temporarily help us cope with stress, similar to how a runner’s high feels good during exercise. However, if someone uses these drugs repeatedly or experiences chronic stress, they may become sensitized and more vulnerable to developing actual psychotic symptoms over time.

Meta-correlation of the effect of ketamine and psilocybin induced subjective effects on therapeutic outcome

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This study examined whether the psychological experiences people have while taking ketamine or psilocybin—such as feeling disconnected or having spiritual insights—are actually responsible for their mental health improvements. Researchers analyzed 23 studies and found that these subjective experiences explain about 10% of ketamine’s benefits and 24% of psilocybin’s benefits. Psilocybin’s effects appear more connected to therapeutic outcomes than ketamine’s, and both drugs showed stronger connections between subjective effects and treatment success in substance use disorder compared to depression.

Effect of psilocybin on marble burying in ICR mice: role of 5-HT1A receptors and implications for the treatment of obsessive-compulsive disorder

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Researchers tested whether psilocybin mushrooms could help treat obsessive-compulsive disorder (OCD) using mice. They found that psilocybin reduced compulsive burying behavior in mice, similar to how approved OCD medications work. The study revealed that this anti-compulsive effect works through different brain mechanisms than previously thought, and that combining psilocybin with another drug called buspirone might block psychedelic effects while keeping therapeutic benefits.

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.

Ethical Considerations Regarding Psychedelics for Clinical Pain Research

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This paper examines the ethical considerations necessary when conducting research on psychedelics like psilocybin for treating chronic pain. With chronic pain affecting millions of Americans and traditional treatments like opioids causing significant problems, researchers are exploring psychedelics as alternatives. The authors provide guidance on obtaining proper informed consent, protecting vulnerable patients, managing regulatory requirements, and ensuring research benefits participants while following four key ethical principles: autonomy, beneficence, justice, and avoiding harm.

Ayahuasca enhances the formation of hippocampal-dependent episodic memory without impacting false memory susceptibility in experienced ayahuasca users: An observational study

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Researchers studied how ayahuasca affects memory in experienced Santo Daime church members who use it regularly. Surprisingly, instead of impairing memory like other psychedelics typically do, ayahuasca enhanced people’s ability to remember details of events they witnessed. Importantly, the drug did not make people more susceptible to false memories or memory distortions, even though the entire study occurred while participants were under its acute effects.

Research Keyword: Psychedelics