Representing multiple objects as an ensemble enhances visual cognition

被引:463
作者
Alvarez, George A. [1 ]
机构
[1] Harvard Univ, Dept Psychol, Vis Sci Lab, Cambridge, MA 02138 USA
基金
美国国家科学基金会;
关键词
NATURAL IMAGES; RAPID EXTRACTION; GLOBAL FEATURES; STATISTICS; SETS; PERCEPTION; ATTENTION; SCENES; COLOR; INFORMATION;
D O I
10.1016/j.tics.2011.01.003
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
The visual system can only accurately represent a handful of objects at once. How do we cope with this severe capacity limitation? One possibility is to use selective attention to process only the most relevant incoming information. A complementary strategy is to represent sets of objects as a group or ensemble (e.g. represent the average size of items). Recent studies have established that the visual system computes accurate ensemble representations across a variety of feature domains and current research aims to determine how these representations are computed, why they are computed and where they are coded in the brain. Ensemble representations enhance visual cognition in many ways, making ensemble coding a crucial mechanism for coping with the limitations on visual processing.
引用
收藏
页码:122 / 131
页数:10
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