Abstract：
:Motion aftereffects are normally tested in regions of the visual field that have been directly exposed to motion (local or concrete MAEs). We compared concrete MAEs with remote or phantom MAEs, in which motion is perceived in regions not previously adapted to motion. Our aim was to study the spatial dependencies and spatiotemporal tuning of phantom MAEs generated by radially expanding stimuli. For concrete and phantom MAEs, peripheral stimuli generated stronger aftereffects than central stimuli. Concrete MAEs display temporal frequency tuning, while phantom MAEs do not show categorical temporal frequency or velocity tuning. We found that subjects may use different response strategies to determine motion direction when presented with different stimulus sizes. In some subjects, as adapting stimulus size increased, phantom MAE strength increased while the concrete MAE strength decreased; in other subjects, the opposite effects were observed. We hypothesise that these opposing findings reflect interplay between the adaptation of global motion sensors and local motion sensors with inhibitory interconnections.
journal_name
Vision Resjournal_title
Vision researchauthors
Price NS,Greenwood JA,Ibbotson MRdoi
10.1016/j.visres.2004.04.001subject
Has Abstractpub_date
2004-01-01 00:00:00pages
1971-9issue
17eissn
0042-6989issn
1878-5646pii
S0042698904001725journal_volume
44pub_type
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