PSYCH261 Lecture Notes - Thalamus, Abducens Nerve, Strabismus
24 Mar 2013
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Document Summary
*neurons that detect a particular category of physical events. *process by which sensory stimuli are transduced into slow, graded receptor. *slow, graded electrical potential produced by receptors in response to physical stimuli. *actual electronic potential that happens in sensory transduction. *hue the dominant wavelength; the color of the light that"s coming into the eye. *brightness intensity; increase in brightness, increase in intensity. *saturation purity; increase in saturation, increase in wavelengths. *vergence cooperative eye movements, ensures the image falls on identical portions of each retina. *convergence (looking towards the same point) vs. divergence (looking into different directions) *saccades rapid, ballistic eye movements (video, moving back and forth eye) *overt attention bring power of fovea to bear on objects. *smooth pursuit eye movements tracking a moving object. *three of twelve cranial nerves dedicated to controlling eye movements (oculomotor, trochlear, abducens) Nystagmus alternating smooth pursuit in one direction followed by saccades in the opposite direction. *ciliary muscles control the shape of the lens.
