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Related Experiment Videos

Kinesthetic working memory and action control within the dorsal stream.

Katja Fiehler1, Michael Burke, Annerose Engel

  • 1Department of Experimental and Biological Psychology, Philipps-Universität Marburg, Gutenbergstr. 18, D-35032 Marburg, Germany. fiehler@staff.uni-marburg.de

Cerebral Cortex (New York, N.Y. : 1991)
|June 6, 2007
PubMed
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The dorsal stream processes visual information for movement control. This study shows it also handles kinesthetic action control and kinesthetic working memory, particularly the left anterior intraparietal sulcus.

Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Motor Control

Background:

  • The dorsal (action) stream is known to process visual information for movement control.
  • Movement relies on integrated sensory information, including vision, touch, and proprioception (haptics).
  • The role of the dorsal stream in processing non-visual, kinesthetic information remains less understood.

Purpose of the Study:

  • To investigate the extent to which dorsal stream networks are involved in kinesthetic action control.
  • To determine if these networks also support kinesthetic working memory.
  • To explore the neural basis of action representation beyond visual input.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to monitor brain activity.

Related Experiment Videos

  • Fourteen blindfolded participants performed a delayed-recognition task involving encoding, maintenance, and recognition of hand movements.
  • No visual feedback was provided during the task.

    • Main Results:

    • Encoding of kinesthetic hand movements activated somatosensory areas, superior parietal lobe (dorsodorsal stream), anterior intraparietal sulcus (aIPS) and adjacent areas (ventrodorsal stream), premotor cortex, and occipitotemporal cortex.
    • Short-term maintenance of kinesthetic information showed load-dependent activity in the left aIPS and adjacent superior parietal lobe (ventrodorsal stream).

    Conclusions:

    • The action representation system within the dorsodorsal and ventrodorsal streams is utilized for both visual and kinesthetic action control.
    • Neural networks within the ventrodorsal stream, especially the left aIPS, are engaged in working memory for kinesthetic information.
    • This suggests a broader role for the dorsal stream in integrating and representing action-related information across sensory modalities.