PSY 1300 Lecture Notes - Lecture 3: Subliminal Stimuli, Sensory Neuron, Color Blindness
22 Sep 2016
School
Department
Course
Professor
Document Summary
Bottom-up process by which our senses receive and relay outside stimuli. Special receptors in sense organs activated allowing various dorms of outside stimuli to become neural signals in brain. Sense organs: eyes, ears, nose, skin, and taste buds. Sensory receptors: specialized neurons stimulated by different kinds of energy. Transduction: sensory receptors convert this energy into neural impulses and send them to the brain. Top-down processing is the way that our brains organize and interpret that info and put it into context. Just noticeable difference (jnd or difference threshold): smallest difference between 2 stimuli that is detectable 50% of the time, involves two. Weber"s law: ability to detect a difference between stimuli depends on the intensity of those stimuli. Absolute threshold: the smallest amount of energy needed for a person to consciously detect stimulus 50 % of the time it is present, minimum. Subliminal stimuli: below the level of conscious awareness.
