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Greater orbitofrontal activity predicts better memory for faces.

Stephen Frey1, Michael Petrides

  • 1Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec, H3A 2B4, Canada. stephen@bic.mni.mcgill.ca

The European Journal of Neuroscience
|June 26, 2003
PubMed
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The right orbitofrontal cortex, specifically area 11, is crucial for encoding novel human faces. Enhanced activity in this brain region correlates with improved face recognition performance.

Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Brain Imaging

Background:

  • Previous research identified the orbitofrontal cortex's role in encoding novel abstract visual information.
  • The specific involvement of the orbitofrontal cortex in face encoding remained to be elucidated.

Purpose of the Study:

  • To investigate the activation of the orbitofrontal cortex during the encoding of novel human faces.
  • To determine if the same orbitofrontal area involved in abstract visual encoding is also critical for face encoding.

Main Methods:

  • Positron emission tomography (PET) study.
  • Examined brain activity in normal human subjects during visual face encoding.
  • Correlated cerebral blood flow in specific brain regions with face recognition performance.

Related Experiment Videos

Main Results:

  • Area 11 in the right orbitofrontal region showed selective activation during novel face encoding.
  • This area is directly linked to the medial temporal lobe.
  • Greater cerebral blood flow in this orbitofrontal area was associated with better face recognition.

Conclusions:

  • The right orbitofrontal cortex (area 11) plays a selective role in encoding visually presented novel human faces.
  • This finding extends the known function of the orbitofrontal cortex to facial recognition.
  • Orbitofrontal cortex activity is a key neural correlate of successful face recognition.