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The nature of visual memory represen...

Ryan, Jennifer Denise.

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The nature of visual memory representations.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	The nature of visual memory representations./
作者:	Ryan, Jennifer Denise.
面頁冊數:	148 p.
附註:	Adviser: Neal Cohen.
Contained By:	Dissertation Abstracts International62-06B.
標題:	Gerontology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3017198
ISBN:	0493275924

The nature of visual memory representations.
Ryan, Jennifer Denise.

The nature of visual memory representations. - 148 p.

Adviser: Neal Cohen.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.

This work explores the influence of visual memory representations on current processing of the visual world, as assessed by monitoring the eye movements of individuals with normal memory, amnesic patients and the elderly to pictures of real-world scenes. On-line visual memory representations are shown to be comprised of activated information from multiple memory sources, including long-term and working memory, and to include information regarding objects and their relations. This information in an on-line memory representation is directly compared to the currently processed information from the external world, and the resulting comparison influences subsequent processing, even when this information is not accessible to conscious awareness as measured by verbal report. By investigating the nature of visual representations through observing the influence they exert on current processing, whether or not the stored information is accessible consciously, this work provides a critical test regarding the nature of the impairment in amnesia, and also permits observation of memory performance in the elderly in the absence of influential social stereotypes.

ISBN: 0493275924Subjects--Topical Terms:

533633
Gerontology.

The nature of visual memory representations.
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245 1 0 $a The nature of visual memory representations.
300 $a 148 p.
500 $a Adviser: Neal Cohen.
500 $a Source: Dissertation Abstracts International, Volume: 62-06, Section: B, page: 2970.
502 $a Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.
520 $a This work explores the influence of visual memory representations on current processing of the visual world, as assessed by monitoring the eye movements of individuals with normal memory, amnesic patients and the elderly to pictures of real-world scenes. On-line visual memory representations are shown to be comprised of activated information from multiple memory sources, including long-term and working memory, and to include information regarding objects and their relations. This information in an on-line memory representation is directly compared to the currently processed information from the external world, and the resulting comparison influences subsequent processing, even when this information is not accessible to conscious awareness as measured by verbal report. By investigating the nature of visual representations through observing the influence they exert on current processing, whether or not the stored information is accessible consciously, this work provides a critical test regarding the nature of the impairment in amnesia, and also permits observation of memory performance in the elderly in the absence of influential social stereotypes.
520 $a Amnesic patients show systematic impairments in using relational information from long-term memory for processing of a current visual display, even when conscious awareness or explicit remembering of the information is not required for the information to influence further processing. These findings suggest that amnesic patients have a deficit in declarative (relational) memory rather than a deficit in explicit memory. Amnesic patients can show normal influences of relational information on current processing, however, if that information has been recently acquired and maintained, presumably within working memory.
520 $a The elderly demonstrate influences of relational information maintained in on-line memory representations on subsequent processing of scenes, just as do younger subjects. These findings support the argument that verbal reports may not provide a complete picture of the information maintained in memory and may be confounded by negative stereotypes surrounding aging and memory in this population.
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