Psychology 1000 Lecture Notes - Lecture 5: David H. Hubel, Learned Helplessness, Melatonin

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

Document Summary

Gain information from a variety of sources. Psychophysics is a relation between physical stimulus and psychological response. Can be light, hearing tells us how sensory systems are taking information in. Value of a stimulus characteristic required to produce some response. Vision: candle flame at 50 km on a clear dark night. Hearing: tick of a watch at 6 metres. Taste: tsp. of sugar in 8 l. of water. Smell: 1 drop of perfume in a 6 room apt. Touch: wing of a fly falling on cheek from 1 cm in order of most sensitive. What"s the relation between psychological stimulation and actual stimulation. Size of difference threshold relative to physical intensity of test is constant. If i = 50db and jnd is reported at 55db. Therefore delta i is 5 and i is 50. 10 i = therefore delta i is 10. This tells us that the jnd would occur at 110db, or the test bends .