Psychology 1000 Lecture Notes - Lecture 5: Optic Nerve, Amacrine Cell, Absolute Threshold

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

Document Summary

*vision and hearing are the most sensitive: psychophysics and psychophysiology, difference threshold (jnd)= smallest difference between 2 stimuli hat people can perceive 50% of the time, ex. I = intensity: can compare the sensitivity of different systems, the smaller the fraction, the more sensitive, ex. Vision (brightness) = 1/60 vs. taste (salt) = 1/3. Increase brightness by 1/60 to experience difference: size of difference threshold relative to the physical intensity of test stimulus is constant, ex. October 21, 2014: claimed 50% increase in popcorn sales after subliminal messages during movie, despite being showed below threshold (200msec to see, lie, ethical concern over use of subliminal (cid:498)cuts(cid:499, however, consider: In general, there is no evidence that subliminal cuts influence consumer behaviour: priming study (bruce & valentine, 1986) If prime was related to photo, participants answered question. Outer ear amplifies sound, but is not vital: transduction (receptors -> neural impulse, coding (frequency, interaction (physiological and psychological, synaesthesia.