Common reference frame for neural coding of translational and rotational optic flow

D. R. W. Wylie (), W. F. Bischof and B. J. Frost
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D. R. W. Wylie: University of Alberta
W. F. Bischof: University of Alberta
B. J. Frost: Queen's University

Nature, 1998, vol. 392, issue 6673, 278-282

Abstract: Abstract Self-movement of an organism through the environment is guided jointly by information provided by the vestibular system and by visual pathways that are specialized for detecting ‘optic flow’1,2. Motion of any object through space, including the self-motion of organisms, can be described with reference to six degrees of freedom: rotation about three orthogonal axes, and translation along these axes. Here we describe neurons in the pigeon brain that respond best to optic flow resulting from translation along one of the three orthogonal axes. We show that these translational optic flow neurons, like rotational optic flow neurons3,4,5, share a common spatial frame of reference with the semicircular canals of the vestibular system. The three axes to which these neurons respond best are the vertical axis and two horizontal axes orientated at 45° to either side of the body midline.

Date: 1998
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DOI: 10.1038/32648

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