Abstract:
:We studied direction discrimination for lines moving obliquely relative to their orientation. Manipulating contrast, length and duration of motion, we found systematic errors in direction discrimination at low contrast, long length and/or short durations. These errors can be accounted for by a competition between ambiguous velocity signals originating from contour motion processing units and signals from line terminator processing units. The dynamic of this competition can be described by a simple model involving two different classes of processing units with different contrast thresholds, different integration time constants and different levels of response saturation.
journal_name
Vision Resjournal_title
Vision researchauthors
Lorenceau J,Shiffrar M,Wells N,Castet Edoi
10.1016/0042-6989(93)90209-fsubject
Has Abstractpub_date
1993-06-01 00:00:00pages
1207-17issue
9eissn
0042-6989issn
1878-5646pii
0042-6989(93)90209-Fjournal_volume
33pub_type
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