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Plos One : Effects of Handedness on Visual Sensitivity in Perihand Space, Volume 7

By Lange, Floris, P. De

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Book Id: WPLBN0003936836
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos One : Effects of Handedness on Visual Sensitivity in Perihand Space, Volume 7  
Author: Lange, Floris, P. De
Volume: Volume 7
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary)
Historic
Publication Date:
Publisher: Plos

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De Lange, F. P. (n.d.). Plos One : Effects of Handedness on Visual Sensitivity in Perihand Space, Volume 7. Retrieved from http://www.ebooklibrary.org/


Description
Description : Recent studies have shown that changes in visual processing in perihand space are limited to the area around the right hand, at least in right-handers. One explanation for these findings is that perception is altered at locations where action is more likely to occur. To test this notion, we asked both right- and left-handers to perform an unspeeded visual discrimination task under four hand-position configurations : Left hand, right hand, both hands, or no hands near the display. Compared to the no-hands (control) condition, visual sensitivity (d’) was higher in the dominant-hand condition for right-handers and higher in the dominant- as well as the non-dominant hand condition for left-handers. When both hands were near the display, sensitivity was similar to that in the dominant-hand condition for right-handers and to that in the non-dominant hand condition for left-handers. This shows that performance differed between the two handedness groups when their non-dominant hand was near the display (both alone and accompanied by their dominant hand). Thus, the pattern for left-handers did not correspond to a mirror image of the pattern for right-handers. In line with studies on bimanual action control, visual processing in perihand space seems to be determined by the different ways in which leftand right-handers use their hands.

 

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