PSYC 100 Lecture Notes - Lecture 5: Optic Chiasm, Detection Theory, Subliminal Stimuli

• School: McGill University
• Department: Psychology
• Course: PSYC 100
• Professor: Jens Pruessner

Document Summary

Stimulus energy (sound, light, smell) sensory receptors neural impulses brain (visual, auditory, olfactory areas) Signal detection theory: the contention that the threshold varies with the nature of the stimulus (signal) and with the background stimulation (noise: subliminal stimuli: stimuli below threshold of consciousness; may affect the way you behave. Vision light waves through protective cornea anterior chamber through aqueous humor through pupil and iris through lens into posterior chamber. Cornea pupil lens retina light sensitive tissues are at the back of the eye they contain visual receptors. Trichromatic theory: color vision theory that states that there are 3 types of color receptors, short medium long (blue, green, red) Opponent process theory: color vision theory that the pairing of color experiences, activation of one process inhibits its partner, color afterimage: happens when viewing the opposite or complementary colors. Is the sense of hearing: moves as sound waves, frequency: gives the pitch- directly proportional, cycles per second.