Chapter

Reaching and Moving in 3-D Space

Ian P. Howard

in Perceiving in Depth

Published in print February 2012 | ISBN: 9780199764167
Published online May 2012 | e-ISBN: 9780199949373 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199764167.003.0253

Series: Oxford Psychology Series

Reaching and Moving in 3-D Space

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Ultimately animals use information about the distance and three-dimensional structure of objects to guide their movements. First, the kinesthetic receptors responsible for the sense of position and movement of body parts are described. This is followed by a review of investigations of how people guide the direction and distance of an arm movement when reaching for and grasping an object. People can walk to an object in the dark after having seen the object. They register the visual distance of the object and then use path integration based on information from the vestibular organs or walking movements to guide their movement to the object. The mechanisms responsible for this behavior are described. The chapter ends with a discussion of how blind people learn to use tactile information to guide their movements.

Keywords: kinesthesia; reaching; grasping; path integration

Chapter.  14370 words.  Illustrated.

Subjects: Neuroscience

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