PSYCH 2010 Study Guide - Midterm Guide: Visual Acuity, Color Vision, Color Blindness

• School: Clemson University
• Department: Psychology
• Course: PSYCH 2010
• Professor: Jo Jorgensen

Document Summary

Synesthesia: stimulation of one sense evokes the sensation of another. Just noticeable difference (jnd): smallest difference that can be detected between two stimuli. Ex. cant tell the difference b/w 20 lbs and 20lbs + 2 ozs but can tell the slight difference b/w 20 lbs and 22 lbs + 2 ozs. Webers law: jnd is proportional to initial stimulus: light stimulus=small just noticeable difference. Absolute threshold for sensation: smallest quantity that can be reliably detected by senses. Ex. quietest sound that can be detected by ears: smallest touch that can be detected by skin. Sharp focus: move eyes to center objects in fovea. Accommodation: curvature of lens adjusts to alter visual focus: close to object = lens gets rounder. Optic chiasm: point at which the axons from the inside half of each eye cross over and then project to the opposite half of the brain. Signals from both eyes go to both hemispheres of the brain.