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Somatosensory processes subserving perception and action.

H Chris Dijkerman1, Edward H F de Haan

  • 1Department of Experimental Psychology, Helmholtz Research Institute, Utrecht University, 3584 CS Utrecht, The Netherlands. c.dijkerman@uu.nl e.dehaan@uu.nl

The Behavioral and Brain Sciences
|August 21, 2007
PubMed
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The somatosensory system processes touch and body position for action and perception. Different brain areas, like the posterior parietal cortex and insula, handle distinct functions such as action guidance versus object recognition.

Area of Science:

  • Neuroscience
  • Somatosensory System Research

Background:

  • The somatosensory system integrates tactile and proprioceptive information.
  • This system is crucial for localizing touch, experiencing qualities of touch, and body position awareness for action.
  • Tactile exploration aids in object recognition and conscious perception.

Purpose of the Study:

  • To investigate the functional organization of the cerebral somatosensory system.
  • To propose a dissociation between somatosensory processing for action guidance and that for perception/memory.
  • To differentiate processing streams for external object information versus body-related information.

Main Methods:

  • Review of neuroanatomical studies on somatosensory processing.
  • Analysis of functional pathways within the somatosensory system.

Related Experiment Videos

  • Comparative analogy with the visual system's processing streams.

    • Main Results:

    • Identified parallel and serial processing streams in the somatosensory system.
    • One stream terminates in the posterior parietal cortex (PPC), another in the insula.
    • Suggested dissociation between processing for action and processing for perception/memory.
    • Differentiated processing for external object recognition versus body awareness.

    Conclusions:

    • The posterior parietal cortex (PPC) is implicated in both perception and action.
    • The insula is primarily involved in perceptual recognition and learning.
    • Somatosensory processing is organized into distinct pathways serving different functional roles, analogous to the visual system.