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Related Experiment Videos

A neural network reflecting decisions about human faces.

T J Druzgal1, M D'Esposito

  • 1Helen Wills Neuroscience Institute, Department of Psychology, University of California, Berkeley, 3210 Tolman Hall, Berkeley, CA 94720, USA. druzgal@mail.med.upenn.edu

Neuron
|December 12, 2001
PubMed
Summary

This study reveals distinct brain regions involved in visual recognition decisions. The anterior cingulate cortex (ACC) and a network including the left fusiform face area (FFA) and left dorsolateral prefrontal cortex (DLPFC) show opposing activity patterns during face matching.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • The neural basis of decision-making in working memory, particularly for visual stimuli, is not fully understood.
  • Previous research has linked anatomical structures to memory but not the decision-making network.

Purpose of the Study:

  • To investigate the neural network underlying decision processes during face recognition.
  • To identify brain regions involved in determining face match during a delayed recognition task.

Main Methods:

  • Event-related functional magnetic resonance imaging (fMRI) was employed.
  • Participants performed a delayed face recognition task, and brain activity was measured during the decision period.

Main Results:

  • A double dissociation in brain activity was observed between the anterior cingulate cortex (ACC) and a network including the left fusiform face area (FFA) and left dorsolateral prefrontal cortex (DLPFC).

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  • Increased activity in the left FFA and left DLPFC correlated with correct face matches.
  • Elevated ACC activity was associated with non-matching probe faces.

    • Conclusions:

    • Frontal brain regions, including the ACC, work with stimulus-specific temporal networks to facilitate visual recognition decisions.
    • The findings support a model integrating memory and decision-making networks for visual stimuli processing.