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Face processing in the temporal lobe.

Jason J S Barton1

  • 1Division of Neuro-ophthalmology, Departments of Medicine (Neurology), Ophthalmology and Visual Sciences, Psychology, University of British Columbia, Vancouver, BC, Canada.

Handbook of Clinical Neurology
|August 14, 2022
PubMed
Summary
This summary is machine-generated.

Human face perception involves extensive temporal lobe networks, including distinct regions for identity and expression processing. This research highlights the complexity of facial recognition and its neural underpinnings.

Keywords:
Face expressionFace patchFace recognitionFusiform face areaProsopagnosia

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Psychology

Background:

  • Face perception is crucial for social interaction.
  • Early models proposed a core face network.
  • Recent studies indicate a more distributed system across the temporal lobe.

Purpose of the Study:

  • To investigate the neural basis of face perception.
  • To delineate the brain regions involved in processing facial identity and expression.
  • To understand the functional organization of the face processing network.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) adaptation.
  • Lesion studies in humans.
  • Electrophysiological recordings.
  • Comparative studies in humans and monkeys.

Main Results:

  • A widespread network of face-selective regions extends throughout the temporal lobe.
  • fMRI adaptation confirms face-specific processing in these areas.
  • Lesions in specific regions cause prosopagnosia (face blindness).
  • Evidence suggests segregation between identity and expression processing, possibly related to static vs. dynamic facial information.

Conclusions:

  • The human face processing system is more extensive than previously thought, involving multiple interconnected regions.
  • Neural processing of facial identity and expression appears segregated within this network.
  • Understanding these neural mechanisms is key to comprehending social cognition and disorders like prosopagnosia.