KINE 3020 Lecture Notes - The Blind Spot, Optic Tract, Superior Colliculus
13 Dec 2013
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Document Summary
Vision gives us information about where our bodies are in space, about the relation of one body part to another, and about the motion of our bodies. Visual proprioception: gives us information about the environment but also about our own body. Two types of photoreceptor cells: rods: vision at night, when amount of light is very low and too weak to activate the cones, cones: normal day light and responsible for color vision. Fovea: where light is at its clearest form. The blind spot where there are no photo receptors cells is where the optic nerve leaves the retina. Sensory differentiation is key part of motor control, meaning the visual system has to identify and determine if they are moving. Object identification and motion sense are processed through two separate pathways. Left half of the visual field projects on the medial half of the retina of the left eye and the lateral half of the retina of the right eye.
