Kinesiology 3480A/B Study Guide - Final Guide: Ponzo Illusion, Proprioception, Angular Acceleration

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Low gain feedback systems correct finely tuned movements (error magnitude is small), no cognition is used: bell-shaped velocity profile. In a study with cerebellar ataxic individuals: asked to pick up a cup and put it back (medication vs. no medication) When on medication, they use a low gain feedback system. Medications allowed him to control his cerebellar ataxic tremor, movements looked off" but not horrible. When there was no medication, they used a high gain feedback system. Retina thalamus (lateral geniculate nucleus) v1 (primary visual cortex) When looking at an object, v1 projects sensory visual information to the posterior parietal cortex after receiving signals from the retina and thalamus. Contains a retinotopic representation of our entire visual world: dorsovisual pathway. Information from v1 is transmitted to the posterior parietal cortex. Pathway responsible for using vision for action i. e. producing a planned, coordinated movement response: ventral visual pathway. Information from v1 is transmitted to the inferotemporal cortex.

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