The speed of free will

被引：43

作者：

Horowitz, Todd S. ^{[1
,2
]}

Wolfe, Jeremy M. ^{[2
]}

Alvarez, George A.

Cohen, Michael A.

Kuzmova, Yoana I.

机构：

[1] Brigham & Womens Hosp, Visual Attent Lab, Cambridge, MA 02139 USA

[2] Harvard Univ, Sch Med, Cambridge, MA 02138 USA

来源：

QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY | 2009年 / 62卷 / 11期

关键词：

Selective attention; Visual search; Volition; OVERLAPPING NEURAL SYSTEMS; SERIAL VISUAL PRESENTATION; ATTENTIONAL DWELL TIME; FRONTAL EYE FIELD; SPATIAL ATTENTION; TEMPORAL ATTENTION; MULTIPLE TARGETS; STIMULUS-DRIVEN; WORKING-MEMORY; TOP-DOWN;

D O I：

10.1080/17470210902732155

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

Do voluntary and task-driven shifts of attention have the same time course? In order to measure the time needed to voluntarily shift attention, we devised several novel visual search tasks that elicited multiple sequential attentional shifts. Participants could only respond correctly if they attended to the right place at the right time. In control conditions, search tasks were similar but participants were not required to shift attention in any order. Across five experiments, voluntary shifts of attention required 200-300ms. Control conditions yielded estimates of 35-100ms for task-driven shifts. We suggest that the slower speed of voluntary shifts reflects the oclock speed of free willo. Wishing to attend to something takes more time than shifting attention in response to sensory input.

引用

页码：2262 / 2288

页数：27

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