Cognitive demand affects the gain of the torsional optokinetic response.
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.
Goonetilleke
Samanthi C
SC
Vestibular Research Laboratory, School of Psychology, A19, University of Sydney, NSW 2006, Sydney, Australia.
Curthoys
Ian S
IS
Burgess
Ann M
AM
MacDougall
Hamish G
HG
D000328:Adult; D001921:Brain / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D005403:Fixation, Ocular / Q000502:physiology; D006801:Humans; D009039:Motion Perception / Q000502:physiology; D009483:Neuropsychological Tests; D017120:Nystagmus, Optokinetic / Q000502:physiology*; D009801:Oculomotor Muscles / Q000294:innervation / Q000502:physiology; D010775:Photic Stimulation; D011597:Psychomotor Performance / Q000502:physiology*; D012399:Rotation