Samanthi C. Goonetilleke, Ian S. Curthoys,
Ann M. Burgess
and Hamish G. MacDougall (2004). Cognitive demand affects the
gain of the torsional optokinetic response. Experimental Brain
Research, 158: 125-128
Cognitive tasks such as mental arithmetic and fixation of
imagined targets are known to affect vestibular nystagmus.
Here we show that another cognitive task- subject's active
control of the rotation of a single moving visual line in
an otherwise darkened room-influences the gain of the torsional
optokinetic response to that single moving visual line.