Document Detail


Influence of visual guidance on braille recognition: low lighting also helps touch.
MedLine Citation:
PMID:  8290336     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study was an attempt to clarify the mechanisms responsible for the benefits of visual guidance in tactual braille recognition. Subjects touched +90 degrees tilted braille under normal room lighting, or with low lighting, with or without visual guidance. Both visual information about finger angle and spatial reference information were manipulated with stained glass and light-emitting diodes. The provision of visual information about finger angle alone was no help to braille recognition, and performance was low. Adding visual spatial reference information to vision of finger angle raised performance. However, recognition accuracy was also substantially improved by low lighting. The benefits of darkness for haptics did not generalize to the reading of upright, two-letter braille words. It was proposed that extraneous visual information may distract sighted subjects in haptic tasks that require mental rotation of visual images.
Authors:
M A Heller
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Perception & psychophysics     Volume:  54     ISSN:  0031-5117     ISO Abbreviation:  Percept Psychophys     Publication Date:  1993 Nov 
Date Detail:
Created Date:  1994-02-22     Completed Date:  1994-02-22     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0200445     Medline TA:  Percept Psychophys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  675-81     Citation Subset:  C    
Affiliation:
Winston-Salem State University, North Carolina 27110.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Blindness*
Female
Humans
Male
Pattern Recognition, Visual*
Photic Stimulation
Reading*
Task Performance and Analysis
Touch*
Visual Perception*
Grant Support
ID/Acronym/Agency:
MBRS 2 S06 RR-08040/RR/NCRR NIH HHS

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


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