Cookies on this website

We use cookies to ensure that we give you the best experience on our website. If you click 'Accept all cookies' we'll assume that you are happy to receive all cookies and you won't see this message again. If you click 'Reject all non-essential cookies' only necessary cookies providing core functionality such as security, network management, and accessibility will be enabled. Click 'Find out more' for information on how to change your cookie settings.

Here we examine adaptation effects on pattern detection and position discrimination tasks in radial and rotational motion patterns, induced by adapting stimuli moving in the same or opposite directions to the test stimuli. Adaptation effects on the two tasks were similar, suggesting these tasks are performed by the same population of neurons. Global motion specific adaptation was then induced by presenting adaptation stimuli and test stimuli in different parts of the visual field. Again, adaptation effects on the two tasks were similar, but neither same-direction nor opposite-direction motion produced any adaptation effect on contracting motion patterns. Finally, adaptation stimuli were compared that should have similar effects on local motion processing neurons, but different effects on global motion processing neurons. Again, adaptation effects on the two tasks were similar. However, when global-level adaptation was avoided, no adaptation effects were seen with adaptation patterns moving in the opposite direction to the test pattern. Together, these last two experiments suggest that adaptation to opposite directions of motion from the test motion affects global motion processing but not local motion processing neurons.

Original publication

DOI

10.1016/j.visres.2011.01.002

Type

Journal article

Journal

Vision Res

Publication Date

02/03/2011

Volume

51

Pages

479 - 488

Keywords

Adaptation, Physiological, Discrimination (Psychology), Humans, Motion Perception, Pattern Recognition, Visual, Photic Stimulation, Sensory Thresholds