左侧颞下叶在面孔信息加工中的作用: 一项ECoG案例研究

Translated title of the contribution: Face information processing in the left inferior temporal lobe: An ECoG case study

Ye Zhang, Hanyu Shao, Carl M. Gaspar, Wei Chen, Junming Zhu, Yelei Tang, Sheng He, Xuchu Weng

Research output: Contribution to journalArticle

Abstract

Functional magnetic resonance imaging (fMRI) studies have identified that the human fusiform gyrus contains specialized regions for the processing of faces, often labeled as the fusiform face areas (FFA). However, fMRI, on its own, is a correlative measurement that cannot provide evidence for the causal role of FFA in face processing. Evidence for a causal role of FFA can be acquired by using a multimodal approach that combines fMRI, electrocorticogram, electronic brain stimulation, and behavior. The current study investigated the role of the left FFA in facial information processing by directly recording event-related potentials from the inferior temporal lobes with intracranial electrodes in a patient with suspected right temporal lobe epilepsy. Our results show that, faces induced stronger blood oxygenation level dependent and electrophysiological response at the left FFA compared to other image categories; electrical stimulation through the electrode placed at the left FFA did not produce self-reports of perceptual face distortion; but electrical stimulation to the left FFA did reduce sensitivity to subtle changes in facial contours. These results suggest that the left FFA may play a causal role in the fine processing of facial shape, and may have distinct functions from the corresponding area of the right hemisphere.

Translated title of the contributionFace information processing in the left inferior temporal lobe: An ECoG case study
Original languageChinese
Pages (from-to)2438-2446
Number of pages9
JournalKexue Tongbao/Chinese Science Bulletin
Volume60
Issue number25
DOIs
StatePublished - Sep 1 2015

Keywords

  • Electrical brain stimulation
  • Face perception
  • Fine processing
  • Fusiform face areas
  • Intracranial recording

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  • Cite this

    Zhang, Y., Shao, H., Gaspar, C. M., Chen, W., Zhu, J., Tang, Y., He, S., & Weng, X. (2015). 左侧颞下叶在面孔信息加工中的作用: 一项ECoG案例研究. Kexue Tongbao/Chinese Science Bulletin, 60(25), 2438-2446. https://doi.org/10.1360/N972015-00366