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A. Atabaki, P.W. Dicke, H.-O. Karnath and P. Thier The dependencies of fronto-parietal BOLD responses evoked by covert visual search suggest eye-centred coding European Journal of Neuroscience 37

Version of Record online: 13 FEB 2013 | DOI: 10.1111/ejn.12139

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In a fMRI paradigm we varied the direction of eye-gaze during covert visual search in order to dissociate, whether covert search unfolds in an eye- or non-eye-centred frame of reference. Not only BOLD responses in the well-known retinotopically organized visual areas but also activity in a region in the intraparietal sulcus (IPS) as well as the right frontal eye field (FEF) reflected covert search in contralateral eye-centred space. In other words, the IPS and the right FEF, key constituents of a parieto-frontal network for covert visual search, operate in an eye-centred frame of reference.

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