東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

The role of attention in position en...

Shim, Won Mok.

Linked to FindBook

Google Book

Amazon

博客來

The role of attention in position encoding.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The role of attention in position encoding./
Author:	Shim, Won Mok.
Description:	101 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2863.
Contained By:	Dissertation Abstracts International66-05B.
Subject:	Psychology, Experimental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3174030
ISBN:	0542118777

The role of attention in position encoding.
Shim, Won Mok.

The role of attention in position encoding. - 101 p.

Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2863.

Thesis (Ph.D.)--Harvard University, 2005.

Contrary to both our subjective experience of a stable visual space and to our knowledge about retinotopic organization in the brain, the perception of spatial position can be distorted by motion and eye movements, suggesting that positional representations also integrate sources of information other than retinal location. Despite its critical involvement in both motion perception and eye movements, the role of visual attention in positional encoding is poorly understood. In this thesis, by focusing on the phenomenon of position distortion, I examine the influence of attention on the visual representation of space. The thesis consists of three sets of studies, the results of which suggest that visual attention contributes to position distortion, independent of low-level motion and eye movement.

ISBN: 0542118777Subjects--Topical Terms:

517106
Psychology, Experimental.

The role of attention in position encoding.
LDR:03246nmm 2200301 4500 001 1817036
005 20060816133908.5
008 130610s2005 eng d
020 $a 0542118777
035 $a (UnM)AAI3174030
035 $a AAI3174030
040 $a UnM $c UnM
100 1 $a Shim, Won Mok. $3 1906401
245 1 4 $a The role of attention in position encoding.
300 $a 101 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2863.
500 $a Adviser: Patrick Cavanagh.
502 $a Thesis (Ph.D.)--Harvard University, 2005.
520 $a Contrary to both our subjective experience of a stable visual space and to our knowledge about retinotopic organization in the brain, the perception of spatial position can be distorted by motion and eye movements, suggesting that positional representations also integrate sources of information other than retinal location. Despite its critical involvement in both motion perception and eye movements, the role of visual attention in positional encoding is poorly understood. In this thesis, by focusing on the phenomenon of position distortion, I examine the influence of attention on the visual representation of space. The thesis consists of three sets of studies, the results of which suggest that visual attention contributes to position distortion, independent of low-level motion and eye movement.
520 $a The first section shows that the high-level percept of motion can modulate the position shift, even when the low-level spatio-temporal properties of the motion stimulus remain constant, by using an ambiguous motion stimulus. As the perceptual organization of motion changed, the locations of the perceived illusory position shifts varied. The second section shows that the perceived position of the flashes is strongly modulated by attention, using an attentive tracking paradigm, which allows explicit control over the locus of attention. In terms of its characteristics, the position distortion induced by attentive tracking closely resembles those induced by motion and eye movements. The last section demonstrates bi-directional illusory position shifts toward the end point of apparent motion. Such position compression induced by a shift of attention from a start to an end point of apparent motion mirrors saccadic compression---the apparent shift of an object presented around the time of saccades toward the saccade target. This result suggests that saccadic compression may be driven by attention preceding the eyes to the target.
520 $a Collectively, these findings suggest that attention is an integral part of a common mechanism underlying the motion- and eye movement-induced position distortions. This discovery of an independent role of attention in position encoding contributes to a better understanding of how the brain represents the position of objects in visual space, and, in so doing, how it integrates information from multiple mechanisms.
590 $a School code: 0084.
650 4 $a Psychology, Experimental. $3 517106
650 4 $a Psychology, Cognitive. $3 1017810
690 $a 0623
690 $a 0633
710 2 0 $a Harvard University. $3 528741
773 0 $t Dissertation Abstracts International $g 66-05B.
790 1 0 $a Cavanagh, Patrick, $e advisor
790 $a 0084
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3174030