Abstract:
:Two experiments are described in which it was investigated whether the adaptation on which motion aftereffects (MAEs) are based is a response to retinal image motion alone or to the motion signal derived from the process which combines the image motion signal with information about eye movement (corollary discharge). In both experiments observers either fixated a stationary point or tracked a vertically moving point while a pattern (in experiment 1, a grating; in experiment 2, a random-dot pattern) drifted horizontally across the field. In the tracking condition the adapting retinal motion was oblique. In the fixation condition it was horizontal. In every case in both conditions the MAE was horizontal, in the direction opposite to that of pattern motion. These results are consistent with the hypothesis that the adaptation is a response to the motion signal derived from the comparison of eye and image motion rather than to retinal motion per se. An alternative explanation is discussed.
journal_name
Perceptionjournal_title
Perceptionauthors
Mack A,Hill J,Kahn Sdoi
10.1068/p180649subject
Has Abstractpub_date
1989-01-01 00:00:00pages
649-55issue
5eissn
0301-0066issn
1468-4233journal_volume
18pub_type
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