PSYC 1010 Lecture Notes - Lecture 4: Gustav Fechner, Detection Theory, Subliminal Stimuli

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Gerald Goldberg, Miranda Di Lorenzo, Nikoo Norouzian, JongJin Kim, Eden Champagne

Document Summary

The selection, arrangement, and interpretation of sensory input. The study of the relationship between stimulus and sensation. He made a statistic called absolute threshold. Means the intensity level at which the probability of detection is. Thresholds defined in terms of probability of responding. Weber"s law quantifies the perception of change in a stimulus in a given stimulus just noticeable difference (jnd) Signal detection theory involves decision processes and higher mental functions used in everyday life. Is a way to measure the ability to tell the difference between informative patterns and random patterns that distract from the information. Subliminal perception = perception without awareness being tricked without knowing that you have been tricked. Sensory adaptation keeps people tuned to the changes our senses so we aren"t distracted helping us focus on what we feel is important. Stimulus: light (differs in amplitude and wavelength) amplitude influences brightness.