Neuroimaging – Page 2

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.

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.

Study protocol for ‘Psilocybin in patients with fibromyalgia: brain biomarkers of action’

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Researchers are testing whether psilocybin (the active compound in magic mushrooms) combined with therapeutic support can help people with fibromyalgia, a chronic pain condition. The study will measure brain activity using EEG and brain imaging to understand how psilocybin might reduce pain and improve mental health. Twenty patients will receive guided psilocybin sessions over eight weeks while researchers track changes in brain function and pain levels.

Engaging Mood Brain Circuits with Psilocybin (EMBRACE): a study protocol for a randomized, placebo-controlled and delayed-start, neuroimaging trial in depression

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This research study is investigating how psilocybin, a compound from certain mushrooms, affects the brain in people with depression. The study involves 50 participants who will receive either psilocybin or a placebo, with their brain activity monitored using advanced imaging scans. Researchers will examine how psilocybin changes blood flow and network activity in brain regions involved in mood regulation, and whether these changes are linked to improvements in depression symptoms.

Safety, feasibility, and tolerability of psilocybin in older adults with amnestic MCI: Preliminary data from a SV2a PET imaging study

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Researchers investigated whether psilocybin, a compound from certain mushrooms, could be safely used to treat memory problems in older adults with mild cognitive impairment. In this early-stage study, participants received either psilocybin or a placebo while researchers used brain imaging to measure changes in synaptic connections. The preliminary results suggest psilocybin was well-tolerated with manageable side effects like dizziness, and participants were able to complete the study without serious problems.

Multiphoton imaging of neural structure and activity in Drosophila through the intact cuticle

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Scientists developed a new imaging technique that allows researchers to observe brain activity in fruit flies without surgically removing the protective head covering. This breakthrough lets researchers watch neural activity for much longer periods and during natural behaviors like walking and responding to odors. The technique uses special microscopes that shine infrared light through the fly’s intact head to image neurons expressing fluorescent proteins.

Synaptic degeneration in the prefrontal cortex of a rat AD model revealed by volume electron microscopy

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Researchers used advanced microscopy techniques to examine brain tissue from rats with Alzheimer’s disease and compared it to healthy rats. They found that Alzheimer’s disease causes damage to connections between brain cells (synapses) in a brain region important for thinking and memory. Specifically, the connections were weaker and smaller, and many new spine-like structures formed but didn’t properly connect to other cells, suggesting the brain may be trying unsuccessfully to compensate for the disease.

Research Topic: Neuroimaging