PSYC 101 Lecture Notes - Lecture 11: Visual Cortex, Macular Degeneration, Superior Colliculus
55
PSYC 101 Full Course Notes
Verified Note
55 documents
Document Summary
Smallest amount of sensory stimulus needed to notice it"s there at all. Size of a difference in a stimulus needed to notice that a change has occurred. More intense stimulus, bigger change needed to notice it (weber"s law) Problem: people aren"t always willing, or able to report accurately. Discriminating a sensory signal from the noise in which it"s embedded. The more noticeable a stimulus would be, the more it would pop out. Expect a signal is there to detect. Believe it is important to detect the signal. They already have experience with that signal or noise combination. Enables analysis of biases: compare accurate choices vs false positives, misses. Avoids relying on willingness and ability to report accurately and honestly. Assumes no single absolute threshold or jnd for everyone, all the time. When object is distant, lens flattens to get figure.
