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Related Experiment Video

Updated: Apr 18, 2026

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The Representation of Object-Directed Action and Function Knowledge in the Human Brain.

Quanjing Chen1, Frank E Garcea2, Bradford Z Mahon3

  • 1Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY 14627-0268, USA.

Cerebral Cortex (New York, N.Y. : 1991)
|January 18, 2015
PubMed
Summary

Understanding how we use objects involves integrating action and function knowledge. This study reveals object-directed actions are processed in frontoparietal and temporal areas, while function knowledge is specifically represented in the left medial temporal cortex.

Keywords:
conceptual representationfMRImultivariate pattern classificationobject-directed actionstool use

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • Appropriate object use relies on integrating action and function knowledge.
  • Prior research localizes action knowledge to frontoparietal areas and function knowledge to temporal lobes.
  • The neural basis of object knowledge representation remains incompletely understood.

Purpose of the Study:

  • To investigate the neural representation of object-directed action and function knowledge.
  • To explore how the brain distinguishes between action and function knowledge using multivoxel pattern analysis.
  • To determine the specific brain regions involved in processing object-directed actions versus object functions.

Main Methods:

  • Multivoxel pattern analysis (MVPA) was employed to decode object knowledge.
  • Participants performed pantomimes of familiar tool actions.
  • A novel cross-object decoding approach was used to measure classification accuracy beyond object-specific information.
  • Region of interest (ROI) and whole-brain searchlight analyses were conducted.

Main Results:

  • Object-directed actions were successfully decoded in both parietal and temporal tool-preferring regions.
  • No independently defined tool-preferring ROI showed successful decoding of object function.
  • Whole-brain analysis indicated frontoparietal motor/peri-motor regions represent object-directed actions.
  • Medial temporal lobe areas, particularly in the left hemisphere, were involved in representing function knowledge.

Conclusions:

  • Both action and function knowledge are represented in a topographically coherent manner within the brain.
  • These distinct knowledge types are amenable to study using multivariate neuroimaging approaches.
  • The left medial temporal cortex plays a crucial role in the representation of object function knowledge.