Functional heterogeneity of single neuronal activity in the monkey dorsolateral prefrontal cortex

Extracellular single unit recording during high fixed ratio bar press behavior, guided by multimodal cue stimuli for food intake, revealed functional heterogeneity in the monkey dorsolateral prefrontal cortex. Cells were found significantly more often in the ventral arcuate concavity, the dorsal arcuate concavity, the principal sulcal area and the inferior convexity which responded, respectively, to visual events, auditory events, visual plus auditory events and bar press.