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The "Gist" of Early Visual Processing.

Chan, David.

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The "Gist" of Early Visual Processing.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	The "Gist" of Early Visual Processing./
Author:	Chan, David.
Description:	27 p.
Notes:	Source: Masters Abstracts International, Volume: 51-05.
Contained By:	Masters Abstracts International51-05(E).
Subject:	Psychology, Experimental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR92862
ISBN:	9780494928622

The "Gist" of Early Visual Processing.
Chan, David.

The "Gist" of Early Visual Processing. - 27 p.

Source: Masters Abstracts International, Volume: 51-05.

Thesis (M.A.)--University of Toronto (Canada), 2012.

Visual information is processed by two separate visual pathways. One is the magnocellular visual pathway (M-pathway), which carries high temporal frequency information but low spatial frequency information. The other is the parvocellular visual pathway (P-pathway), which carries low temporal information but high spatial information. Kveraga and colleagues (2007) presented participants with high and low spatial frequency images and found that participants made faster and more accurate categorization responses to the low spatial frequency images. They hypothesized this was due to low spatial frequency "gist" information being rapidly carried by the M-pathway. Using diffuse light and hand posture manipulations, we replicated the advantage for low spatial frequency (LSF) images in both experiments, and also found a larger advantage for LSF information when biasing the M-pathway (using hand posture). We were unable to inhibit the M-pathway using red diffuse light. Thus, it does appear "gist" processing is uniquely carried by the M-pathway.

ISBN: 9780494928622Subjects--Topical Terms:

517106
Psychology, Experimental.

The "Gist" of Early Visual Processing.
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020 $a 9780494928622
035 $a (MiAaPQ)AAIMR92862
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100 1 $a Chan, David. $3 2103545
245 1 4 $a The "Gist" of Early Visual Processing.
300 $a 27 p.
500 $a Source: Masters Abstracts International, Volume: 51-05.
500 $a Adviser: Jay Pratt.
502 $a Thesis (M.A.)--University of Toronto (Canada), 2012.
520 $a Visual information is processed by two separate visual pathways. One is the magnocellular visual pathway (M-pathway), which carries high temporal frequency information but low spatial frequency information. The other is the parvocellular visual pathway (P-pathway), which carries low temporal information but high spatial information. Kveraga and colleagues (2007) presented participants with high and low spatial frequency images and found that participants made faster and more accurate categorization responses to the low spatial frequency images. They hypothesized this was due to low spatial frequency "gist" information being rapidly carried by the M-pathway. Using diffuse light and hand posture manipulations, we replicated the advantage for low spatial frequency (LSF) images in both experiments, and also found a larger advantage for LSF information when biasing the M-pathway (using hand posture). We were unable to inhibit the M-pathway using red diffuse light. Thus, it does appear "gist" processing is uniquely carried by the M-pathway.
590 $a School code: 0779.
650 4 $a Psychology, Experimental. $3 517106
650 4 $a Psychology, Psychobiology. $3 1017821
690 $a 0623
690 $a 0349
710 2 $a University of Toronto (Canada). $3 1017674
773 0 $t Masters Abstracts International $g 51-05(E).
790 $a 0779
791 $a M.A.
792 $a 2012
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR92862