ATTENTIONAL MODULATION OF NEURAL PROCESSING OF SHAPE, COLOR, AND VELOCITY IN HUMANS

被引：705

作者：

CORBETTA, M

MIEZIN, FM

DOBMEYER, S

SHULMAN, GL

PETERSEN, SE

机构：

[1] WASHINGTON UNIV,SCH MED,DEPT NEUROL & NEUROL SURG,ST LOUIS,MO 63110

[2] WASHINGTON UNIV,SCH MED,MCDONNELL CTR HIGHER BRAIN STUDIES,ST LOUIS,MO 63110

来源：

SCIENCE | 1990年 / 248卷 / 4962期

关键词：

D O I：

10.1126/science.2360050

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Positron emission tomography (PET) was used to measure changes in regional cerebral blood flow of normal subjects, while they were discriminating different attributes (shape, color, and velocity) of the same set of visual stimuli. Psychophysical evidence indicated that the sensitivity for discriminating subtle stimulus changes was higher when subjects focused attention on one attribute than when they divided attention among several attributes. Correspondingly, attention enhanced the activity of different regions of extrastriate visual cortex that appear to be specialized for processing information related to the selected attribute.

引用

页码：1556 / 1559

页数：4

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