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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Visual Perception

Background:

  • Face-selective neurons were first identified in the macaque inferior temporal (IT) cortex in the 1970s.
  • Subsequent research has focused on identifying the visual features that activate these 'face cells'.
  • The link between IT cortex activity and actual visual perception of faces is not fully understood.

Purpose of the Study:

  • To investigate the response of face-selective neurons to illusory facial features.
  • To explore the extent to which face cell activity explains visual perception.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to study macaque brains.
  • Researchers presented objects with illusory facial features to macaques during fMRI scans.

Main Results:

  • Certain face patches in the IT cortex responded to illusory facial features in objects.
  • This indicates that face-selective neurons can be activated by non-real facial stimuli.

Conclusions:

  • Face-selective IT cortex activity may be involved in perceiving illusory facial features.
  • Further research is needed to understand how face cell responses explain visual perception.
  • Developing new approaches is crucial for fully understanding the functional role of face cells.