Midpoint fixation task: quantitative assessment of visual neglect.
We present a method for assessing visual neglect using oculography, the "midpoint-fixation" task. In the test, patients showed rightward deviation of the fixation point. Pure bias in visual neglect was considered to be assessed well by this method. Newly designed stimuli that lead to stable fixation and an effective calibration procedure are proposed. The method is suggested as useful in the assessment of visual neglect.
Chiba
Yu
Y
Department of Sensory and Motor System Medicines, University of Tokyo, Japan. chiba-tky@umin.net
Nishihara
Ken
K
Yamaguchi
Akira
A
Haga
Nobuhiko
N
D000368:Aged; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000175:diagnosis / Q000503:physiopathology*; D010775:Photic Stimulation; D014796:Visual Perception / Q000502:physiology*