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ABSTRACT WHEN the macular projection area—that part of the visual striate cortex to which the macular region of the retina projects—is removed in monkeys a characteristic symptom can be
demonstrated. The animal frequently misreaches for small pieces of food when they are presented to him on a flat surface1,2. The error involved may be as much as three inches, and two inches
is common. It is the direction of the object, rather than the distance, which is usually gauged incorrectly by the animal; that is, his fingers fall to the sides of the object rather than
beyond or in front of it. The direction of the error appears to depend primarily on which hand is used, misreaching to the left tending to occur when the left hand is used and misreaching to
the right when the right hand is used. The position of the food relative to the animal's body is also important. This type of behaviour is often called ‘past-pointing’; but since the
error tends to be one of direction rather than distance, and also because past-pointing is also used to refer to vestibular or cerebellar derangement, we prefer to use the term
‘misreaching’. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution
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Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS THE POSTERIOR PARIETAL CORTEX CONTRIBUTES TO VISUOMOTOR PROCESSING FOR SACCADES IN BLINDSIGHT MACAQUES Article Open access 04
March 2021 NEURAL CORRELATES OF PERISACCADIC VISUAL MISLOCALIZATION IN EXTRASTRIATE CORTEX Article Open access 27 July 2024 UNREFERENCED SPATIAL LOCALIZATION UNDER MONOCULAR AND DICHOPTIC
VIEWING CONDITIONS Article Open access 01 November 2021 REFERENCES * Munk, H., _Uber die Funktionen der Grosshirnrinde_, 3te Mitteilung, 28 (Hirschwald, Berlin, 1881). Google Scholar *
Weiskrantz, L., in _Current Problems in Animal Behaviour_, edit. by Thorpe, W. H., and Zangwill, O. L. (Cambridge Univ. Press, 1961). Google Scholar * Cowey, A., Ph.D. dissertation, Univ.
of Cambridge (1961); and _Nature_ (in the press). * Sperry, R. W., _Handbook of Experimental Psychology_, Chap. 7, edit. by Stevens, S. S. (Wiley and Sons, New York, 1951). Google Scholar *
Held, R., and Bossom, J., _J. Comp. Physiol. Psychol._, 54, 33 (1961). Article CAS Google Scholar Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Psychological
Laboratory, Cambridge A. COWEY & L. WEISKRANTZ Authors * A. COWEY View author publications You can also search for this author inPubMed Google Scholar * L. WEISKRANTZ View author
publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE COWEY, A., WEISKRANTZ, L. Role
of Experience in Misreaching produced by Visual Cortex Lesions. _Nature_ 192, 1319 (1961). https://doi.org/10.1038/1921319a0 Download citation * Issue Date: 30 December 1961 * DOI:
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