PSY 100 Lecture Notes - Lecture 8: Basilar Membrane, Psychophysics, Cochlear Nerve

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19 May 2016
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Exteroceptive the senses that make us aware of the world outside us. Interoceptive our sense of our own internal state. (includes pain) Proprioceptive our sense of where we are in space and time, and where one part of the body is in relation to another (includes vestibular and kinesthetic senses) This activates an action potential receptor in a specialized neuron (a sensory receptor). This sets of a chain of action potentials that deliver the sensory message to the part of the brain that will process it. Transduction: conversion of one form of energy (e. g. , light) into another form (e. g. , neural impulses). Brain interprets neural impulses to differentiate different sensory experiences. The lens: the lens has two important functions. 1) make the pupil dilate or constrict to control amount of light. 2) reverses and inverts light pattern as it focuses image on retina. The retina: is a light sensitive tissue that lines the back if the eye.

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