Open AccessVisual phonetic processing localized using speech and nonspeech face gestures in video and point‐light displays
Author(s) -
Bernstein Lynne E.,
Jiang Jintao,
Pantazis Dimitrios,
Lu ZhongLin,
Joshi Anand
Publication year - 2011
Publication title -
human brain mapping
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.005
H-Index - 191
eISSN - 1097-0193
pISSN - 1065-9471
DOI - 10.1002/hbm.21139
Subject(s) - superior temporal sulcus , gesture , psychology , fusiform gyrus , biological motion , middle temporal gyrus , speech perception , face (sociological concept) , fusiform face area , communication , audiology , perception , functional magnetic resonance imaging , neuroscience , face perception , computer science , artificial intelligence , linguistics , medicine , philosophy
The talking face affords multiple types of information. To isolate cortical sites with responsibility for integrating linguistically relevant visual speech cues, speech and nonspeech face gestures were presented in natural video and point‐light displays during fMRI scanning at 3.0T. Participants with normal hearing viewed the stimuli and also viewed localizers for the fusiform face area (FFA), the lateral occipital complex (LOC), and the visual motion (V5/MT) regions of interest (ROIs). The FFA, the LOC, and V5/MT were significantly less activated for speech relative to nonspeech and control stimuli. Distinct activation of the posterior superior temporal sulcus and the adjacent middle temporal gyrus to speech, independent of media, was obtained in group analyses. Individual analyses showed that speech and nonspeech stimuli were associated with adjacent but different activations, with the speech activations more anterior. We suggest that the speech activation area is the temporal visual speech area (TVSA), and that it can be localized with the combination of stimuli used in this study. Hum Brain Mapp, 2010. © 2010 Wiley‐Liss, Inc.