Kinesiology 3480A/B Study Guide - Final Guide: Executive Functions, Ataxia, Posterior Parietal Cortex
9 Jul 2016
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Afferent pathway bottom-up processing, initiates efferent command signals. Efferent pathway top-down processing, controls movement commands. Feedback based control learning a new motor skill. Low gain minute error detection, bell-shaped velocity profile. High gain large vigorous jerky movement errors, phase lag, we see these unnatural, unsmooth movements when learning a new motor task i. e. someone learning how to skate will have jerky movements. Cornea magnifies visual stimulus we see. Iris coloured region of eye, controls amount of light entering the eye. Pupil opening at the centre of the eye, determines light levels that enter our eye. Lens focuses photon energy to the back of our eye. Ciliary muscles provides stretch/relaxation to lens (stretch close image, relax distant image) Retina converts photons into electrical energy processed via our v1. Fovea central part of our eye, highest [ ] of cones here (high spatial resolution) Optic nerve transmits electrical impulses from retina to the brain.
