Behavior
Rutgers study finds GLP-1 drug use is tied to a weaker link between impulsivity and self-reported violence
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A study from Rutgers University reports that adults currently using GLP-1 receptor agonist medications—including semaglutide brands Ozempic and Wegovy—showed a substantially weaker association between impulsivity and self-reported violent behavior than former users. The research, published June 17, 2026 in the journal Criminology, was based on a 2025 U.S. survey and does not establish cause and effect.
A burst of the neurotransmitter acetylcholine in a key brain region helped mice abandon a previously rewarded choice after an expected reward failed to appear, according to a study that mapped chemical signals in the striatum during reversal learning.
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Researchers at the Hebrew University of Jerusalem report that a coordinated pattern of brain activity emerges several seconds before zebrafish swim toward another fish, and that the strength of the signal is linked to individual differences in sociability.