Seyed A. Hassani

The paper examines how cognitive engagement alters neurochemical profiles in the prefrontal cortex and striatum of nonhuman primates, identifying area-specific changes in dopamine, acetylcholine, serotonin, glutamate, and GABA.

This study shows that stimulating 2A adrenoceptors with Guanfacine improves error-based learning and prediction error signaling in the anterior cingulate cortex and striatum of nonhuman primates.

This study shows that M1 receptor selective modulation improves cognitive flexibility without affecting attentional filtering in nonhuman primates.

The paper identifies cell-type specific changes in cortico-striatal gating during feature-based learning in nonhuman primates.

The paper uses SPME to measure multiple neuromodulators in macaque brains during behavior, finding glutamate concentrations much higher than dopamine and acetylcholine.

The paper shows neurons in fronto-striatal circuits encode feature-specific prediction errors during attention and learning, contributing to feature-based attention updates.

The paper investigates effective connectivity between primate ACC and IPFC using electrical microstimulation and finds systematic asymmetries in temporal patterning and latency.