PSYC 100 Lecture Notes - Lecture 8: Detection Theory, Absolute Threshold, Psychophysics

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jordan Poppenk

Document Summary

Psyc 100 lecture 3 notes: sensation and perception. In order to perceive sensations from the environment, receptors must turn the physical information into electrical impulses. Our brains then turn those electrical impulses into ideas which we organize and make sense of from our experiences. Sensations: sight (vision, hearing (audition, taste (gustation, smell (olfaction, touch (somatosensory, body awareness (proprioception, balance (vestibular) Adaptation: when our receptors no longer respond to stimuli because they get tired. Psychophysics: study of the link between sensation and perception: van helmhotlz was known for his work with psychophysics. Just noticeable difference (jnd): the smallest difference in stimulation that can only be detected 50% of the time (half) Law that quantifies the perception of change in a given stimulus. The jdn is a constant ratio of the original stimulus says that the size of the jdn is a constant proportion of the original stimulus.