Neurons in area V4 of the macaque translate attended visual features into behaviorally relevant categories.
Neural processing at most stages of the primate visual system is modulated by selective attention, such that behaviorally relevant information is emphasized at the expenses of irrelevant, potentially distracting information. The form of attention best understood at the cellular level is when stimuli at a given location in the visual field must be selected (space-based attention). In contrast, fewer single-unit recording studies have so far explored the cellular mechanisms of attention operating on individual stimulus features, specifically when one feature (e.g., color) of an object must guide behavioral responses while a second feature (e.g., shape) of the same object is potentially interfering and therefore must be ignored. Here we show that activity of neurons in macaque area V4 can underlie the selection of elemental object features and their "translation" into a categorical format that can directly contribute to the control of the animal's behavior.
Mirabella
Giovanni
G
Department of Neurological and Vision Sciences, Section of Physiology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
Bertini
Giuseppe
G
Samengo
Inés
I
Kilavik
Bjørg E
BE
Frilli
Deborah
D
Della Libera
Chiara
C
Chelazzi
Leonardo
L
D000818:Animals; D001288:Attention / Q000502:physiology; D001522:Behavior, Animal / Q000502:physiology*; D003116:Color; D003463:Cues; D003627:Data Interpretation, Statistical; D004594:Electrophysiology; D005403:Fixation, Ocular / Q000502:physiology; D008253:Macaca mulatta; D008297:Male; D008839:Microelectrodes; D009474:Neurons / Q000502:physiology*; D009949:Orientation; D010775:Photic Stimulation; D014793:Visual Cortex / Q000166:cytology* / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology