The attentional field has a Mexican hat distribution

被引：141

作者：

Müller, NG

Mollenhauer, M

Rösler, A

Kleinschmidt, A

机构：

[1] Univ Frankfurt, Cognit Neurol Unit, Dept Neurol, D-60590 Frankfurt, Germany

[2] Univ Frankfurt, Brain Imaging Ctr, D-60590 Frankfurt, Germany

来源：

VISION RESEARCH | 2005年 / 45卷 / 09期

关键词：

attention; perception; surround inhibition; Mexican hat; task difficulty;

D O I：

10.1016/j.visres.2004.11.003

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

We assessed the interference by distracter letters oil target discrimination as a function of the distance between incompatible distracters and target. The slope of the response time-distance function supports a Mexican hat pattern of attentional modulation in the visual field. We relate the results to our recent finding of neural activity suppression in primary visual cortex coding locations in the vicinity of an attended region [Muller, N. G., & Kleinschinidt, A. (2004). The attentional 'spotlight's' penumbra: Center-surround modulation in striate cortex. Neuroreport, 15(6), 977-980]. As behavioral performance parallels activity modulation of primary visual cortex but not other areas we propose that perceptual capacities are determined by attentional response properties of VI. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1129 / 1137

页数：9

共 47 条

[1]

Angelucci A, 2002, J NEUROSCI, V22, P8633

[2] Attentional interference at small spatial separations [J].