Electrophysiological correlates of figure-ground segregation directly reflect perceptual saliency

被引：21

作者：

Straube, Sirko ^{[1
]}

Grimsen, Cathleen ^{[1
]}

Fahle, Manfred ^{[1
,2
]}

机构：

[1] Univ Bremen, Dept Human Neurobiol, D-28359 Bremen, Germany

[2] City Univ London, Dept Optometry & Visual Sci, Henry Wellcome Labs Vis Sci, London EC1V 0HB, England

来源：

VISION RESEARCH | 2010年 / 50卷 / 05期

关键词：

Cue combination; Event-related potentials; Figure-ground segregation; Human; Identification; Time-frequency analysis; OBJECT-RECOGNITION AREAS; TEXTURE SEGREGATION; FEATURE CONTRAST; SPATIOTEMPORAL DYNAMICS; FUNCTIONAL-ORGANIZATION; CONTOUR INTEGRATION; VISUAL-ATTENTION; GAMMA ACTIVITY; COLOR; ORIENTATION;

D O I：

10.1016/j.visres.2009.12.013

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

In a figure identification task, we investigated the influence of different visual cue configurations (spatial frequency, orientation or a combination of both) oil the human EEG Combining psychophysics with ERP and time-frequency analysis, we show that the neural response at about 200 ms reflects perceptual saltency rather than physical cue contrast Increasing saliency Caused (i) a negative shift of the posterior P2 coinciding with a power decrease in the posterior theta-band and (ii) an amplitude and latency increase of the posterior P3 We demonstrate that visual Cues interact for a percept that is non-linearly related to the physical figure-ground properties (C) 2010 Elsevier Ltd All rights reserved

引用

页码：509 / 521

页数：13

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