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Motion processing in WS

This seminar presents an in-depth analysis of motion processing in individuals with Williams Syndrome (WS), highlighting key findings from various studies, including Atkinson et al. (1997, 2003). It emphasizes that motion perception is not a unitary function and outlines the significance of understanding various subfunctions and their associated neural pathways, such as motion coherence in V5/MT and biological motion in STS. The findings suggest that WS does not exhibit a general motion deficit, urging a reconsideration of the dorsal dysfunction hypothesis.

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Motion processing in WS

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  1. Motion processing in WS Kovács Ilona WS seminar,2007 dec 12.

  2. Motion processing specialization in Williams Syndrome Jason E. Reiss, James E. Hoffman, Barbara Landau U. of Delaware, Johns Hopkins Vision Research, 45 (2005) 3379-3390

  3. Why is motion perception an interesting topic here? • Atkinson et al (1997, 2003): dorsal breakdown behind WS (based on poor performance on a single motion task: motion coherence) • However: Motion perception is not a unitary function!!! • Therefore: It is important to look at subfunctions

  4. Different classes of motion perception • – different neural circuitries: • motion coherence: V5/MT (dorsal) • biological motion: STS (both ventral and dorsal) • form from motion: V5/MT – V4/LO - IT

  5. http://www.visionscience.com/

  6. Conclusions: • Not a general motion deficit in WS • Cannot be attributed to dorsal dysfunction

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