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Processing of Facial Emotion in the Human Fusiform Gyrus
| Content Provider | CiteSeerX |
|---|---|
| Author | Kawasaki, Hiroto Tsuchiya, Naotsugu Kovach, Christopher K. Nourski, Kirill V. Oya, Hiroyuki Howard, Matthew A. Adolphs, Ralph |
| Abstract | ■ Electrophysiological and fMRI-based investigations of the ventral temporal cortex of primates provide strong support for regional specialization for the processing of faces. These responses are most frequently found in or near the fusiform gyrus, but there is substantial variability in their anatomical location and response properties. An outstanding question is the extent to which ventral temporal cortex participates in pro-cessing dynamic, expressive aspects of faces, a function usually attributed to regions near the superior temporal cortex. Here, we investigated these issues through intracranial recordings from eight human surgical patients. We compared several differ-ent aspects of face processing (static and dynamic faces; happy, neutral, and fearful expressions) with power in the high-gamma band (70–150 Hz) from a spectral analysis. Detailed mapping of the response characteristics as a function of anatomical location was conducted in relation to the gyral and sulcal pattern on each patientʼs brain. The results document responses with high re-sponsiveness for static or dynamic faces, often showing abrupt changes in response properties between spatially close recording sites and idiosyncratic across different subjects. Notably, strong responses to dynamic facial expressions can be found in the fusi-form gyrus, just as can responses to static faces. The findings sug-gest a more complex, fragmented architecture of ventral temporal cortex around the fusiform gyrus, one that includes focal regions of cortex that appear relatively specialized for either static or dynamic aspects of faces. ■ |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Human Fusiform Gyrus Facial Emotion Response Property Fusiform Gyrus Anatomical Location Ventral Temporal Cortex Focal Region Human Surgical Patient Ventral Temporal Cortex Participates Dynamic Aspect Spectral Analysis Fragmented Architecture High Re-sponsiveness Response Characteristic Substantial Variability Fearful Expression Facial Expression Expressive Aspect Face Processing Sulcal Pattern Strong Response Patient Brain Fmri-based Investigation Intracranial Recording Abrupt Change Detailed Mapping Outstanding Question Fusi-form Gyrus Strong Support Result Document Response Different Subject Superior Temporal Cortex High-gamma Band Several Differ-ent Aspect Regional Specialization |
| Content Type | Text |
