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Publication Detail
Visually guided reaching depends on motion area MT+
Abstract
Visual information is crucial for goal-directed reaching. A number of studies have recently shown that motion, in particular, is an important source of information for the visuomotor system. For example, when reaching to a stationary object, movement of the background can influence the trajectory of the hand, even when the background motion is irrelevant to the object and task (Brenner and Smeets, 1997; Mohrmann-Lendla and Fleischer, 1991; Saijo et al., 2005; Whitney et al., 2003). This manual following response may be a compensatory response to changes in body position, but the underlying mechanism remains unclear. Here we tested whether visual motion area MT+ is necessary to generate the manual following response. We found that stimulation of MT+ with transcranial magnetic stimulation (TMS) significantly reduced a strong manual following response. MT+ is therefore necessary for generating the manual following response, indicating that it plays a crucial role in guiding goal-directed reaching movements by taking into account background motion in scenes.
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Institute of Cognitive Neuroscience
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