Abstract：
:The control of self-motion is supported by visual, vestibular, and proprioceptive signals. Recent research has shown how these signals interact in the monkey medio-superior temporal area (area MST) to enhance and disambiguate the perception of heading during self-motion. Area MST is a central stage for self-motion processing from optic flow, and integrates flow Weld information with vestibular self-motion and extraretinal eye movement information. Such multimodal cue integration is clearly important to solidify perception. However to understand the information processing capabilities of the brain, one must also ask how much information can be deduced from a single cue alone. This is particularly pertinent for optic flow, where controversies over its usefulness for self-motion control have existed ever since Gibson proposed his direct approach to ecological perception. In our study, we therefore, tested macaque MST neurons for their heading selectivity in highly complex flow Welds based on the purely visual mechanisms. We recorded responses of MST neurons to simple radial flow Welds and to distorted flow Welds that simulated a self-motion plus an eye movement. About half of the cells compensated for such distortion and kept the same heading selectivity in both cases. Our results strongly support the notion of an involvement of area MST in the computation of heading.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Bremmer F,Kubischik M,Pekel M,Hoffmann KP,Lappe Mdoi
10.1007/s00221-009-1990-3subject
Has Abstractpub_date
2010-01-01 00:00:00pages
51-60issue
1eissn
0014-4819issn
1432-1106journal_volume
200pub_type
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