Mather, George and Pavan, Andrea and Marotti, Rosilari Bellacosa and Campana, Gianluca and Casco, Clara (2013) Interactions between motion and form processing in the human visual system. Frontiers in Computational Neuroscience, 7 (65). pp. 1-6. ISSN 1662-5188
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The predominant view of motion and form processing in the human visual system assumes that these two attributes are handled by separate and independent modules. Motion processing involves filtering by direction-selective sensors, followed by integration to solve the aperture problem. Form processing involves filtering by orientation-selective and size-selective receptive fields, followed by integration to encode object shape. It has long been known that motion signals can influence form processing in the well-known Gestalt principle of common fate; texture elements which share a common motion property are grouped into a single contour or texture region. However, recent research in psychophysics and neuroscience indicates that the influence of form signals on motion processing is more extensive than previously thought. First, the salience and apparent direction of moving lines depends on how the local orientation and direction of motion combine to match the receptive field properties of motion-selective neurons. Second, orientation signals generated by “motion-streaks” influence motion processing; motion sensitivity, apparent direction and adaptation are affected by simultaneously present orientation signals. Third, form signals generated by human body shape influence biological motion processing, as revealed by studies using point-light motion stimuli. Thus, form-motion integration seems to occur at several different levels of cortical processing, from V1 to STS.
|Additional Information:||This Document is Protected by copyright and was first published by Frontiers. All rights reserved. it is reproduced with permission|
|Keywords:||motion sensitivity, motion-streaks, motion perception, motion-form interactions, biological motion|
|Subjects:||C Biological Sciences > C800 Psychology|
C Biological Sciences > C850 Cognitive Psychology
C Biological Sciences > C860 Neuropsychology
|Divisions:||College of Social Science > School of Psychology|
|Deposited On:||20 May 2013 14:46|
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