Long-lasting modulation of feature integration by transcranial magnetic stimulation.

Scharnowski, Frank and Rüter, Johannes and Jolij, Jacob and Hermens, Frouke and Kammer, Thomas and Herzog, Michael H (2009) Long-lasting modulation of feature integration by transcranial magnetic stimulation. Journal of Vision, 9 (6). 1.1-10. ISSN 1534-7362

Full content URL: http://www.journalofvision.org/content/9/6/1.full....

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Item Type:Article
Item Status:Live Archive

Abstract

The human brain analyzes a visual object first by basic feature detectors. On the objects way to a conscious percept, these features are integrated in subsequent stages of the visual hierarchy. The time course of this feature integration is largely unknown. To shed light on the temporal dynamics of feature integration, we applied transcranial magnetic stimulation (TMS) to a feature fusion paradigm. In feature fusion, two stimuli which differ in one feature are presented in rapid succession such that they are not perceived individually but as one single stimulus only. The fused percept is an integration of the features of both stimuli. Here, we show that TMS can modulate this integration for a surprisingly long period of time, even though the individual stimuli themselves are not consciously perceived. Hence, our results reveal a long-lasting integration process of unconscious feature traces.

Keywords:Visual perception, Vernier fusion, TMS
Subjects:C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
ID Code:16562
Deposited On:30 Jan 2015 10:16

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