TMS reveals flexible use of form and motion cues in biological motion perception

Mather, George and Battaglini, Luca and Campana, Gianluca (2016) TMS reveals flexible use of form and motion cues in biological motion perception. Neuropsychologia, 84 . pp. 193-197. ISSN 0028-3932

Full content URL: http://dx.doi.org/10.1016/j.neuropsychologia.2016....

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Abstract

The perception of human movement is a key component of daily social interactions. Although extrastriate area MT+/V5 is closely associated with motion processing, its role in the processing of sparse ‘biological motion’ displays is still unclear. We developed two closed matched psychophysical tasks to assess simple coherent motion perception and biological motion perception, and measured changes in performance caused by application of TMS over MT+/V5. Performance of the simple motion discrimination task was significantly depressed by TMS stimulation, and highly correlated within observers in TMS conditions, but there was no significant decrement in performance of the biological motion task, despite low intra-observer correlations across TMS conditions. We conclude that extrastriate area MT+/V5 is an obligatory waypoint in the neural processing of simple coherent motion, but is not obligatory for the processing of biological motion. Results are consistent with a dual neural processing route for biological motion processing.

Keywords:Biological motion, TMS, Motion perception
Subjects:B Subjects allied to Medicine > B140 Neuroscience
Divisions:College of Social Science > School of Psychology
ID Code:22346
Deposited On:28 Feb 2016 19:55

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