Abstract：
:A large portion of the visual cortex is organized retinotopically, but perception is usually non-retinotopic. For example, a reflector on the spoke of a bicycle wheel appears to move on a circular or prolate cycloidal orbit as the bicycle moves forward, while in fact it traces out a curtate cycloidal trajectory. The moving bicycle serves as a non-retinotopic reference system to which the motion of the reflector is anchored. To study the neural correlates of non-retinotopic motion processing, we used the Ternus-Pikler display, where retinotopic processing in a stationary reference system is contrasted against non-retinotopic processing in a moving one. Using high-density EEG, we found similar brain responses for both retinotopic and non-retinotopic rotational apparent motion from the earliest evoked peak (around 120 ms) and throughout the rest of the visual processing, but only minor correlates of the motion of the reference system itself (mainly around 100-120 ms). We suggest that the visual system efficiently discounts the motion of the reference system from early on, allowing a largely reference system independent encoding of the motion of object parts.
journal_name
Brain Topogrjournal_title
Brain topographyauthors
Thunell E,Plomp G,Ögmen H,Herzog MHdoi
10.1007/s10548-015-0458-ysubject
Has Abstractpub_date
2016-03-01 00:00:00pages
273-82issue
2eissn
0896-0267issn
1573-6792pii
10.1007/s10548-015-0458-yjournal_volume
29pub_type
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