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Attentional effects of gaze direction.

Friesen, Christine Kelland.

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Attentional effects of gaze direction.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Attentional effects of gaze direction./
作者:	Friesen, Christine Kelland.
面頁冊數:	144 p.
附註:	Source: Dissertation Abstracts International, Volume: 63-06, Section: B, page: 3049.
Contained By:	Dissertation Abstracts International63-06B.
標題:	Psychology, Experimental. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ68930
ISBN:	0612689301

Attentional effects of gaze direction.
Friesen, Christine Kelland.

Attentional effects of gaze direction. - 144 p.

Source: Dissertation Abstracts International, Volume: 63-06, Section: B, page: 3049.

Thesis (Ph.D.)--University of Alberta (Canada), 2001.

In a series of five studies (seven experiments), attentional cuing methods were employed to investigate the effects of perceived gaze direction. The first study reports that adults shifted their attention automatically to a location gazed at by a centrally presented schematic face---even though the face's gaze direction did not predict where a target would occur. Like exogenous orienting to peripheral onset cues, the gaze cuing effect occurred when cue-target intervals were short, and it occurred in response to nonpredictive cues. However, unlike exogenous attention, the orienting was produced by a central cue and was not replaced by a reversal of the cuing effect at long cue-target intervals (inhibition of return, or IOR). These differences indicated that social cues such as gaze direction might produce a unique type of reflexive orienting. The second study confirmed that the gaze cuing effect reflects a gaze-triggered shift of spatial attention with its own unique time course. In the third study, the relationship between this gaze-triggered orienting and endogenous attention was investigated. Results indicated that orienting to gaze direction occurs independently of endogenous orienting, and that it is more strongly reflexive than orienting to central arrow cues. The fourth experiment investigated the relationship between gaze-triggered orienting and exogenous attention, and found that reflexive attention to gaze direction and reflexive inhibition to an abrupt onset (IOR) are separable processes that can co-occur. In the final set of experiments, eye movement data were collected. Reflexive orienting to gaze direction was observed in both covert and overt attentional response tasks, and it was not affected by manipulations that engage and disengage the oculomotor system. Taken as a whole, the current work provides evidence that adults shift attention in a reflexive manner in response to perceived gaze direction, and that this attention shift is different and separable from traditional forms of orienting. Additionally, the results of these behavioral studies suggest that orienting to gaze direction is mediated primarily by cortical brain mechanisms.

ISBN: 0612689301Subjects--Topical Terms:

517106
Psychology, Experimental.

Attentional effects of gaze direction.
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520 $a In a series of five studies (seven experiments), attentional cuing methods were employed to investigate the effects of perceived gaze direction. The first study reports that adults shifted their attention automatically to a location gazed at by a centrally presented schematic face---even though the face's gaze direction did not predict where a target would occur. Like exogenous orienting to peripheral onset cues, the gaze cuing effect occurred when cue-target intervals were short, and it occurred in response to nonpredictive cues. However, unlike exogenous attention, the orienting was produced by a central cue and was not replaced by a reversal of the cuing effect at long cue-target intervals (inhibition of return, or IOR). These differences indicated that social cues such as gaze direction might produce a unique type of reflexive orienting. The second study confirmed that the gaze cuing effect reflects a gaze-triggered shift of spatial attention with its own unique time course. In the third study, the relationship between this gaze-triggered orienting and endogenous attention was investigated. Results indicated that orienting to gaze direction occurs independently of endogenous orienting, and that it is more strongly reflexive than orienting to central arrow cues. The fourth experiment investigated the relationship between gaze-triggered orienting and exogenous attention, and found that reflexive attention to gaze direction and reflexive inhibition to an abrupt onset (IOR) are separable processes that can co-occur. In the final set of experiments, eye movement data were collected. Reflexive orienting to gaze direction was observed in both covert and overt attentional response tasks, and it was not affected by manipulations that engage and disengage the oculomotor system. Taken as a whole, the current work provides evidence that adults shift attention in a reflexive manner in response to perceived gaze direction, and that this attention shift is different and separable from traditional forms of orienting. Additionally, the results of these behavioral studies suggest that orienting to gaze direction is mediated primarily by cortical brain mechanisms.
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