PSYCH261 Lecture Notes - Lecture 6: Dorsal Root Ganglion, Oval Window, Sound
6 Nov 2018
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Document Summary
Vestibular sense, sense of balance or posture, often considered a sixth sense. Somatosensory system has different pathways for feeling pain or temperature of something. Chemical senses - taste and smell (gustatory and olfaction) Bipolar cells in retina and dorsal root ganglia. Principles of neural coding: rate code - how often its firing. The physical features of sound: loudness, pitch and timbre. loudness - intensity of sound wave relating to the amplitude of sound wave. Pitch - similar to hue; refers to the fundamental frequency of sound wave. timbre - complexity of wave form. Ear converts sound waves - physical energy into neural impulses. Analytic and synthetic: in eye - different light frequencies are put together to synthesize an experience. Ear - frequently breaking down complex stimuli into simpler components (analytic) Different structures in ear communication by their position the important attributes of the sound stimulus. function of auditory system - ability to localize where a sound is.
