neuroimaging – Page 2

Catalyst for change: Psilocybin’s antidepressant mechanisms—A systematic review

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This research review examines how psilocybin, a compound from certain mushrooms, may help treat depression by creating changes in both brain function and psychological experience. Within supportive therapeutic settings, psilocybin appears to increase cognitive flexibility, help people better process emotions, and restore a sense of connection to themselves, others, and the world. The antidepressant benefits seem to work through a combination of direct brain changes and psychotherapeutic factors, rather than through pure pharmacological action alone.

Novel psychedelic interventions for post-traumatic stress disorder and their promise for precision medicine

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This review examines how psychedelic drugs like ketamine, MDMA, and psilocybin could offer new hope for people with PTSD by working on the brain differently than current medications. These compounds work quickly and help the brain form new neural connections that can help people process traumatic memories more effectively. When combined with therapy, these drugs show promise in reducing PTSD symptoms faster and more effectively than traditional antidepressants. The review also explains how doctors could use personalized medicine approaches using brain scans and genetic testing to determine which treatment would work best for each individual patient.

Rediscovering Psilocybin as an Antidepressive Treatment Strategy

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Scientists have renewed their investigation into psilocybin, a compound found in certain mushrooms, as a potential treatment for depression. Studies show promising results with patients experiencing significant improvements in depressive symptoms, sometimes sustained for months after a single treatment session. When administered in controlled therapeutic environments with professional support, psilocybin appears relatively safe, though it can cause temporary side effects like headaches and anxiety. This research represents an important shift in how we might treat severe depression, especially in patients who haven’t responded to conventional antidepressants.

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.

A review of the neuroscience of religion: an overview of the field, its limitations, and future interventions

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This review examines how neuroscience studies the brain’s role in religious experiences and behaviors. While current brain imaging technology has revealed connections between specific brain regions and religious practices like prayer and meditation, these technologies limit what researchers can study because they require people to stay still. The authors suggest that newer technologies like functional near-infrared spectroscopy could allow scientists to study the full range of religious behaviors, including movement-based rituals that are important to many faiths.

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.

Single-dose psilocybin alters resting state functional networks in patients with body dysmorphic disorder

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Researchers gave eight patients with body dysmorphic disorder (an excessive preoccupation with appearance flaws) a single dose of psilocybin and measured their brain activity before and after treatment. They found that psilocybin increased communication between key brain regions involved in decision-making and attention control. Patients whose brains showed these changes experienced significant symptom improvement within a week, suggesting psilocybin may help by enhancing mental flexibility and emotional regulation in BDD.

Safety, tolerability, and clinical and neural effects of single-dose psilocybin in obsessive–compulsive disorder: protocol for a randomized, double-blind, placebo-controlled, non-crossover trial

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This study tests whether psilocybin (the active compound in certain mushrooms) can help people with obsessive-compulsive disorder who haven’t responded to standard treatments. In a carefully controlled trial, participants receive either a single dose of psilocybin or a placebo while receiving psychological support, with their brain activity and symptoms monitored. The research aims to determine if this novel treatment is safe and whether it could work faster than existing medications for this difficult-to-treat condition.

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.

Research Keyword: neuroimaging