PSYCH 100 Study Guide - Midterm Guide: Subliminal Stimuli, Optic Nerve, Color Blindness

• School: PSU
• Department: Psychology - CA
• Course: PSYCH 100
• Professor: Rachel Heinen

Document Summary

Bottom-up processing: a /-\ a. Top-down processing: information processing guided by higher-level mental processes as we construct perceptions, drawing on our experience and expectations. Perception: typically follows sensation, select, organize and interpret sensations. Transduction: process, whereby, physical energy is converted into neural impulse form. *** stimulus sense organ nerve impulses cortex for processing. Habituation and sensory adaptation: habituation, brain stops attending to constant, unchanging stimuli (cognitive, sensory adaptation, sensory receptors lessen response to constant stimuli over time (biological, ex: pain after piercing, discomfort wearing new watch. Bluish colors, high-pitched sounds: long wavelength = low frequency. Reddish colors, low-pitched sounds: different wavelengths of light result in different colors. Accommodation: ex: lens, changes shape to focus near or far objects on retina. Visual processing: optic nerves connect to thalamus, thalamus connects to visual cortex (occipital lobe) Trichromatic theory: helmholtz, retina has 3 types of color receptors (cones in the fovea), each sensitive to red, green and blue, experienced perceptions of different colors.