PSYC 181 Lecture Notes - Lecture 3: Color Vision, Ganglion Cell, Sensory Cortex
Document Summary
Sensation and perception: sensation and perception, sensation a. i. Ex: light eye or sound waves ear: perception b. i. Organizing sensory info into representations of the physical stimulus b. i. 1. Sound of different frequency pitch: transduction c. i. The transformation of a physical stimulus into a neural signal c. i. 1. Senses: sets of specialized cells to convert an environmental feature into neural signals c. i. 2. Process of translating the physical, environmental stimulus into an electrical (neural) signal c. i. 2. a. c. i. 2. b. (ap) Auditory receptors: sound waves electrical signal c. i. 2. c. Olfactory receptors: scent molecules electrical signal (ap) c. i. 2. d. Touch receptors: physical pressure electrical signal c. i. 3. Receptors detect co2 and salt concentration in blood; bladder fullness; blood vessel dilation (headache: psychophysics: d. i. Studies how physical stimuli are translated into psychological experiences d. i. 1. Absolute threshold (minimum ___ person can detect, like light or sound) d. i. 2. Difference threshold (minimum difference between two things, quarter or nickel) d. i. 3. Ex: correspondence between physical and perceptual magnitude: sensory adaptation vs habituation, sensory adaptation a. i.
