Psychology 1000 Chapter Notes - Chapter 5: Visual Cortex, Detection Theory, Color Blindness

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Sensation stimulus detection process by which our sense organs respond to and translate environmental stimuli into nerve impulses that are sent to the brain. Perception the organization of stimulus input and giving it meaning. Interpretation is influenced by context of the characters you perceive. Psychophysics relations between physical characteristics of stimuli and sensory capabilities (concerned about the limits of sensitivity and differences between stimuli. Absolute threshold lowest intensity at which as stimulus can be detected 50% of the time. The lower the absolute threshold, the greater the sensitivity. Signal detection theory factors that influence sensory judgments: decision criterion standard of how certain they must be that a stimulus is present before one says they detect it. Subliminal stimulus weak, brief stimulus that is received by the senses, but cannot be perceived consciously. Prosopagnosia unable to recognize familiar faces. Difference threshold smallest difference between two stimuli that people can perceive 50% of the time.