PY 101 Chapter Notes - Chapter 4: Semicircular Canals, Binocular Disparity, Subtractive Color
24 Mar 2016
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Document Summary
Sensation- our sense organs" detection of external stimulus energy (light, air vibrations, odors, etc) Also transmission of the sense organs" responses to the brain. Perception- the brain"s further processing of these detected signals. What we sense is the result of how we percieve. Stimuli must be coded to be understood by the brain. Sensory coding- our sensory organs" translation of physical properties of stimuli into patterns of neural impulses. Specialized cells, called sensory receptors, receive physical or chemical stimulation and pass the information to the brain in the form of neural impulses. Qualitative information- describes the basic qualities of a stimulus. Quantitative information- consists of the degree, or magnitude, of those qualities. Coarse because sensory qualities are coded by only a few different types of receptors. Stimuli: molecules dissolved in fluid on the tongue. Receptors: cells in taste buds on the tongue. Pathways to the brain: portions of facial, glossopharyngeal, and vagus nerves.
