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The "Gist" of Early Visual Processing.

Chan, David.

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The "Gist" of Early Visual Processing.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	The "Gist" of Early Visual Processing./
作者:	Chan, David.
面頁冊數:	27 p.
附註:	Source: Masters Abstracts International, Volume: 51-05.
Contained By:	Masters Abstracts International51-05(E).
標題:	Psychology, Experimental. -
電子資源:	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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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.
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