PSYC 212 Chapter Notes - Chapter 13: Complex Differential Form, Optical Flow, Lesion

• School: McGill University
• Department: Psychology
• Course: PSYC 212
• Professor: Remy Allard

Document Summary

Specified in terms of cycles of change per second (hertz) To see, take flicker (a visual stimulus that appears and disappears in a cyclical manner over time) Visual stimulus typically used is simple pattern presented in alternation fashion at different temporal frequencies with goal of determining frequency at which flicker perception disappears. Able to detect stimulus alternations up to 60 hz. Critical clicker fusion (cff) a condition at which the temporal change in a stimulus is too rapid for clicker detection. A system has high temporal resolution if it can detect objects that are alternated rapidly. One way to proceed is to obtain contrast threshold of flickering stimulus (usually sine-wave grating) at different temporal frequencies. The greater our temporal resolving ability at a particular frequency, the lower the contrast needed to just observe the flicker: temporal contrast sensitivity function the sensitivity profile of the visual system to different temporal frequencies.