Representation of Expression and Identity by Ventral Prefrontal Neurons.

Autor: Diehl MM; Department of Psychological Sciences, Kansas State University, Manhattan, KS 66506, USA., Plakke BA; Department of Psychological Sciences, Kansas State University, Manhattan, KS 66506, USA., Albuquerque ER; University of Miami Miller School of Medicine, Miami, FL 33136, USA., Romanski LM; Department of Neuroscience, University of Rochester School of Medicine & Dentistry, The Del Monte Institute for Neuroscience, Rochester, NY 14642, USA. Electronic address: Liz_romanski@urmc.rochester.edu.
Jazyk: angličtina
Zdroj: Neuroscience [Neuroscience] 2022 Aug 01; Vol. 496, pp. 243-260. Date of Electronic Publication: 2022 May 30.
DOI: 10.1016/j.neuroscience.2022.05.033
Abstrakt: Evidence has suggested that the ventrolateral prefrontal cortex (VLPFC) processes social stimuli, including faces and vocalizations, which are essential for communication. Features embedded within audiovisual stimuli, including emotional expression and caller identity, provide abundant information about an individual's intention, emotional state, motivation, and social status, which are important to encode in a social exchange. However, it is unknown to what extent the VLPFC encodes such features. To investigate the role of VLPFC during social communication, we recorded single-unit activity while rhesus macaques (Macaca mulatta) performed a nonmatch-to-sample task using species-specific face-vocalization stimuli that differed in emotional expression or caller identity. 75% of recorded cells were task-related and of these >70% were responsive during the nonmatch period. A larger proportion of nonmatch cells encoded the stimulus rather than the context of the trial type. A subset of responsive neurons were most commonly modulated by the identity of the nonmatch stimulus and less by the emotional expression, or both features within the face-vocalization stimuli presented during the nonmatch period. Neurons encoding identity were found in VLPFC across a broader region than expression related cells which were confined to only the anterolateral portion of the recording chamber in VLPFC. These findings suggest that, within a working memory paradigm, VLPFC processes features of face and vocal stimuli, such as emotional expression and identity, in addition to task and contextual information. Thus, stimulus and contextual information may be integrated by VLPFC during social communication.
(Copyright © 2022 IBRO. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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