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Related Experiment Videos

Does visual perception of object afford action? Evidence from a neuroimaging study.

J Grèzes1, J Decety

  • 1Mental processes and Brain activation, Inserm Unit 280, 151 Cours Albert Thomas, F-69424 Cedex 03, Lyon, France.

Neuropsychologia
|October 20, 2001
PubMed
Summary

Visual object perception activates motor areas, suggesting automatic action affordances. This neuroimaging study found common brain regions involved in object recognition and motor representation across different tasks.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • The perception of visual objects may involve motor representations.
  • Understanding the neural basis of object perception is crucial for cognitive neuroscience.

Purpose of the Study:

  • To investigate the neural correlates of motor representation during object perception.
  • To explore how different tasks influence these neural correlates.

Main Methods:

  • Positron emission tomography (PET) was employed to measure regional cerebral blood flow (rCBF).
  • Participants performed various tasks involving visual object perception and non-objects.

Main Results:

  • Object perception, regardless of task, consistently activated a network of cortical regions including the occipito-temporal junction, inferior parietal lobule, supplementary motor area (SMA)-proper, inferior frontal gyrus, and precentral gyrus.

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  • Specific tasks engaged distinct brain regions beyond this common network.
  • The cerebellum was also implicated in object perception.

    • Conclusions:

    • Neurophysiological evidence supports the involvement of motor representation in object perception.
    • Object perception appears to automatically afford potential actions towards the perceived objects.
    • Task-specific activations suggest modulation of this core network by cognitive demands.