Neuroimaging News

The latest neuroimaging stories, summarized by AI

Breath timing reshapes how we read faces

Deliberately slowing or pacing breathing alters how accurately people recognize emotions in faces: slow exhale reduces accuracy while slow inhale can enhance perceptual sensitivity. MEG data suggest the breathing rhythm can desynchronize brain waves from respiration, changing communication between networks that interpret fearful versus neutral expressions. The study used paced breathing with 31 participants and blended facial images, and notes caveats like fixed breathing rates and other physiological factors. Published in European Journal of Neuroscience by Shen-Mou Hsu and Chih-Hsin Tseng.

1 month ago•Source: PsyPost

Psilocybin reshapes brain rhythms and connectivity, predicting psychedelic intensity

neuroimaging

28.145 min•2 months ago

Psilocybin reshapes brain rhythms and connectivity, predicting psychedelic intensity

An EEG study of 25 healthy volunteers shows psilocybin shifts the brain from a resting state to a dynamically engaged pattern by reducing slow theta/alpha power and increasing fast beta/gamma activity, with enhanced connectivity in the default mode network and parietal networks that correlates with the intensity of the psychedelic experience. Baseline fast-wave activity in frontal/emotional regions also predicted response to the drug. Using a double-blind, randomized crossover design (10–20 mg psilocybin vs placebo), researchers highlight potential biomarkers to guide psychedelic-assisted therapies, while noting limitations from the small, healthy-sample size and the need for clinical population studies and autonomic markers like heart-rate variability.

via PsyPost