title: The role of the blobs in determining the perception of drifting plaids and their motion aftereffects.
abstract: Motion aftereffects (MAEs) can be induced by adaptation to a pair of differently oriented drifting gratings whether the gratings are presented simultaneously, as a coherent plaid, or in alternation. The fact that the former MAEs were generally larger than the latter led to the suggestion that simultaneous adaptation involved higher-level extrastriate processes not involved in the alternating effects. In the past few years evidence has accumulated that the difference is in fact due to a low-level monocular process which can be termed the 'blob-tracking mechanism'. A review is presented of the evidence on MAEs induced by simultaneous and alternating adaptation, the evidence for the monocularity of the blob-tracking mechanism, the data which implicate the blob mechanism in the determination of MAE magnitude, perceived plaid drift direction, and in perceived plaid coherence.
authors.affiliation: Department of Psychology, University of Sydney, Australia.
authors.forename: P
authors.initials: P
authors.lastname: Wenderoth
authors.forename: D
authors.initials: D
authors.lastname: Alais
authors.forename: D
authors.initials: D
authors.lastname: Burke
authors.forename: R
authors.initials: R
authors.lastname: van der Zwan
mesh_terms: D006801:Humans; D009039:Motion Perception; D015348:Vision, Binocular; D015349:Vision, Monocular