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The Representation of the Spatial Vertical in Human Optokinetic Nystagmus
Author(s) -
GIZZI MARTIN,
RUDOLPH STEVEN,
COHEN BERNARD,
RAPHAN THEODORE
Publication year - 1992
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1992.tb25271.x
Subject(s) - optokinetic reflex , physics , stimulus (psychology) , nystagmus , coupling (piping) , communication , geodesy , eye movement , audiology , psychology , neuroscience , geology , medicine , materials science , cognitive psychology , metallurgy
With our stimulus conditions we were unable to record more than 2-3 beats of OKAN; therefore direct comparison to the data recorded from monkeys is not possible. We did, however, see cross-coupling in OKN. In monkeys, cross-coupling predominates in OKAN, indicating that velocity storage underlies this phenomenon. We consistently saw the axis of response shift towards the spatial vertical. This implies that although OKAN was weak, velocity storage contributed a representation of the spatial vertical to OKN that is dependent on the axis of the head or body with respect to gravity.