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Visual FB Affects Micrographia Teulings, H.L., Contreras-Vidal, J.L., Stelmach, G.E., and Adler, C.H. (2002). Adaptation of Handwriting Size under Distorted.

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Presentation on theme: "Visual FB Affects Micrographia Teulings, H.L., Contreras-Vidal, J.L., Stelmach, G.E., and Adler, C.H. (2002). Adaptation of Handwriting Size under Distorted."— Presentation transcript:

1 Visual FB Affects Micrographia Teulings, H.L., Contreras-Vidal, J.L., Stelmach, G.E., and Adler, C.H. (2002). Adaptation of Handwriting Size under Distorted Visual Feedback in Patients with Parkinson's Disease and Elderly and Young Controls. Journal of Neurology, Neurosurgery, and Psychiatry, 72, 315-324.

2 Visual FB Affects Micrographia Extra Micrographia Micrographia MAcrographia Teulings, H.L., Contreras-Vidal, J.L., Stelmach, G.E., and Adler, C.H. (2002). Adaptation of Handwriting Size under Distorted Visual Feedback in Patients with Parkinson's Disease and Elderly and Young Controls. Journal of Neurology, Neurosurgery, and Psychiatry, 72, 315-324.

3 PD Patients Use Visual FB of Last Stroke To Program Next Stroke. Teulings, H.L., Contreras-Vidal, J.L., Stelmach, G.E., and Adler, C.H. (2002). Adaptation of Handwriting Size under Distorted Visual Feedback in Patients with Parkinson's Disease and Elderly and Young Controls. Journal of Neurology, Neurosurgery, and Psychiatry, 72, 315-324. MAcrographia: Use FB to match next loop (+undershoot) MIcrographia: PD produce next loop (+undershoot) XMIcrographia: Use FB to match next loop (+undershoot)

4 Teulings, H.L., Contreras-Vidal, J.L., Stelmach, G.E., and Adler, C.H. (2002). Adaptation of Handwriting Size under Distorted Visual Feedback in Patients with Parkinson's Disease and Elderly and Young Controls. Journal of Neurology, Neurosurgery, and Psychiatry, 72, 315-324. Visual FB in PD Patients, Elderly, Young Adults PD: Use visual FB to program the next stroke  Match distortion Elderly: Rely blindly upon proprioceptive FB  Do not care. Young: Perceive visual FB ≠ proprioceptive FB.  Correct size.

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