Haptic perception of the horizontal by blind and low-vision individuals.
Identifieur interne : 000221 ( Ncbi/Checkpoint ); précédent : 000220; suivant : 000222Haptic perception of the horizontal by blind and low-vision individuals.
Auteurs : M A Heller [États-Unis] ; D D Brackett ; E. Scroggs ; A C Allen ; S. GreenSource :
- Perception [ 0301-0066 ] ; 2001.
English descriptors
- KwdEn :
- Adult, Aged, Analysis of Variance, Blindness (congenital), Blindness (physiopathology), Case-Control Studies, Female, Form Perception (physiology), Humans, Male, Middle Aged, Orientation (physiology), Physical Phenomena, Physics, Space Perception (physiology), Touch (physiology), Vision, Low (congenital), Vision, Low (physiopathology).
- MESH :
- congenital : Blindness, Vision, Low.
- physiology : Form Perception, Orientation, Space Perception, Touch.
- physiopathology : Blindness, Vision, Low.
- Adult, Aged, Analysis of Variance, Case-Control Studies, Female, Humans, Male, Middle Aged, Physical Phenomena, Physics.
Abstract
We examined haptic perception of the horizontal in visually impaired people. Blind people (late blind and congenitally blind), persons with very low vision, and blindfolded sighted individuals felt raised-line drawings of jars at four angles. They had to demonstrate their understanding that water remains horizontal, despite jar tilt, by selecting the correct raised-line drawing given four choices. Low-vision subjects, with near perfect scores, performed significantly better than the other groups of subjects. While the late-blind and blindfolded sighted subjects performed slightly better than the congenitally blind participants, the difference between the late-blind and congenitally blind groups was nonsignificant. The performance of the congenitally blind subjects indicates that visual experience is not necessary for the development of an understanding that water level stays horizontal, given container tilt.
PubMed: 11430244
Affiliations:
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pubmed:11430244Le document en format XML
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<series><title level="j">Perception</title>
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<front><div type="abstract" xml:lang="en">We examined haptic perception of the horizontal in visually impaired people. Blind people (late blind and congenitally blind), persons with very low vision, and blindfolded sighted individuals felt raised-line drawings of jars at four angles. They had to demonstrate their understanding that water remains horizontal, despite jar tilt, by selecting the correct raised-line drawing given four choices. Low-vision subjects, with near perfect scores, performed significantly better than the other groups of subjects. While the late-blind and blindfolded sighted subjects performed slightly better than the congenitally blind participants, the difference between the late-blind and congenitally blind groups was nonsignificant. The performance of the congenitally blind subjects indicates that visual experience is not necessary for the development of an understanding that water level stays horizontal, given container tilt.</div>
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<name sortKey="Scroggs, E" sort="Scroggs, E" uniqKey="Scroggs E" first="E" last="Scroggs">E. Scroggs</name>
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<country name="États-Unis"><region name="Illinois"><name sortKey="Heller, M A" sort="Heller, M A" uniqKey="Heller M" first="M A" last="Heller">M A Heller</name>
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