Journal article
Electrocorticography reveals the dynamics of famous voice responses in human fusiform gyrus
Journal of neurophysiology, Vol.129(2), pp.342-346
02/2023
DOI: 10.1152/jn.00459.2022
PMCID: PMC9886354
PMID: 36576268
Abstract
Voice and face processing occur through convergent neural systems that facilitate speaker recognition. Neuroimaging studies suggest that familiar voice processing engages early visual cortex, including the bilateral fusiform gyri (FG) on the basal temporal lobe. However, what role the FG plays in familiar voice processing and whether it is driven by bottom-up or top-down mechanisms is unresolved. In this study we directly examined neural responses to familiar voices and faces in human FG using direct cortical recordings in epilepsy surgery patients. We tested the hypothesis that neural populations in human FG respond to familiar voices and investigated the temporal properties of voice responses in FG. Recordings were acquired from five adult epilepsy surgery patients during a person identification task using visual and auditory stimuli from famous speakers (U.S. presidents Barack Obama, George W. Bush, and Bill Clinton). Patients were presented with images of presidents or clips of their voices and asked to identify the portrait/speaker. Our results demonstrate that a subset of face responsive sites in and near FG also exhibit voice responses that are both lower in magnitude and relatively delayed (300-600 ms) relative to visual responses. The dynamics of voice responses revealed by direct cortical recordings suggests a top-down feedback-mediated response to familiar voices in FG that may facilitate speaker identification.
Details
- Title: Subtitle
- Electrocorticography reveals the dynamics of famous voice responses in human fusiform gyrus
- Creators
- Ariane E. Rhone - University of IowaKyle Rupp - University of PittsburghJasmine L. Hect - University of PittsburghEmily E. Harford - University of PittsburghDaniel Tranel - University of IowaMatthew A. Howard - University of IowaTaylor J. Abel - University of Pittsburgh
- Resource Type
- Journal article
- Publication Details
- Journal of neurophysiology, Vol.129(2), pp.342-346
- DOI
- 10.1152/jn.00459.2022
- PMID
- 36576268
- PMCID
- PMC9886354
- ISSN
- 0022-3077
- eISSN
- 1522-1598
- Grant note
- DOI: 10.13039/100000055, name: HHS | NIH | National Institute on Deafness and Other Communication Disorders, award: R01 DC004290; DOI: 10.13039/100000055, name: HHS | NIH | National Institute on Deafness and Other Communication Disorders, award: R21 DC019217
- Language
- English
- Electronic publication date
- 12/28/2022
- Date published
- 02/2023
- Academic Unit
- Neurology; Psychological and Brain Sciences; Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984353995802771
Metrics
16 Record Views