Document Detail

Adapting to monocular vision: grasping with one eye.
MedLine Citation:
PMID:  7621928     Owner:  NLM     Status:  MEDLINE    
The aim of the present study was to determine whether normal subjects with one eye covered and patients in whom one eye had been enucleated generate more head movements than subjects using binocular vision during the performance of a visually guided grasping movement. In experiment 1, 14 right-handed normal subjects were tested binocularly and monocularly in a task in which they were required to reach out and grasp oblong blocks of different sizes at different distances. Although the typical binocular advantage in reaching and grasping was observed, the overall head movement scores did not differ between these testing conditions. In experiment 2, seven right-handed enucleated patients were compared to seven age and sex-matched control subjects (tested under binocular and monocular viewing conditions), on the same task as used in experiment 1. While no differences were found in the kinematics of reaches produced by the enucleated patients and the control subjects, the patients did produce larger and faster resultant head movements, composed mainly of lateral and vertical movements. This suggests that enucleated patients may be generating more head movements in order to better utilize retinal motion cues to aid in manual prehension.
J J Marotta; T S Perrot; D Nicolle; P Servos; M A Goodale
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Experimental brain research     Volume:  104     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  1995  
Date Detail:
Created Date:  1995-08-31     Completed Date:  1995-08-31     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  107-14     Citation Subset:  IM    
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MeSH Terms
Adaptation, Physiological / physiology*
Depth Perception / physiology
Functional Laterality / physiology
Head / physiology
Movement / physiology*
Ocular Physiological Phenomena*
Photic Stimulation
Vision, Binocular / physiology
Vision, Monocular / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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