Neuroimaging News

The latest neuroimaging stories, summarized by AI

Dopamine Keeps Stress-Reduced Courtship Alive in Fruit Flies

New research shows male Drosophila confined in tiny spaces exhibit a lasting drop in courtship after stress, and dopamine release is required to maintain this suppression. Blocking dopamine synthesis or signaling—via drugs, RNA interference, or removing receptors in the mushroom body—and silencing key dopamine neuron clusters (PAM and PPL1) prevents the prolonged reduction, though the immediate decline occurs without dopamine. Longer confinement (7–24 hours) yields suppression lasting days, highlighting a dopamine-dependent mechanism linking stress to reduced mating drive in fruit flies.

22 days ago•Source: PsyPost

Breath timing reshapes how we read faces

neuroimaging

29.235 min•2 months ago

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.

via PsyPost