PSY100H1 Lecture 7: Tues Jan 29 2019
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PSY100H1 Full Course Notes
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Document Summary
Transduction: process by which sensory receptors pass impulses to connecting neuron when they receive stimulation. Most (not smell) goes first to thalamus, directed to particular part of coretx where information is interpreted. Absolute threshold: minimum intensity of stimulation that must occur before you experience sensation. Difference threshold: the just noticeable difference between 2 stimuli )minimum amount of change required for a person to detect a difference) Taste stimuli: chemicals from food, dissolve in saliva. Taste receptors: taste buds, send signals to brain. 5 basic qualities: sweet, salty, sour, bitter, umami (savory) Stimuli: chemicals from outside body, dissolve in fluid on mucous membranes in nose. Olfactory epithelium (mucosa): thin layer of tissue embedded with smell receptors, transmit information to olfactory bulb (brain center for smell) Receive info from smell, taste, visual system. Mechanorectors: respond to mechanical distortion or pressure (most sensitive actually found in cochlea, responsible for sound transduction)
