Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Unilateral spatial neglect, a debilitating condition affecting awareness of one side of space, is commonly assessed using cancellation tasks in which patients cross out targets distributed over a sheet. Standard scores emphasize the left-right distribution of omissions. Here, the additional value of extracting temporal as well as spatial aspects of performance from video recordings was examined. Videos from 18 patients with left neglect and 19 healthy age-matched control participants were obtained. Interrater reliability of the video analysis was high. In addition to overall differences in target detection and bias, patients significantly differed from the control group in terms of the location of first cancellation, overall slowness, greater variability in speed, systematic slowing with time on task and as a function of target location, less coherent search organization, and a sharply increased tendency to recancel targets. Considering a subset of patients whose scores, by standard criteria, were at or near the normal range indicated that these additional variables indeed increased the sensitivity of the task as well as allowed the simultaneous assessment of spatial and nonspatial aspects of the disorder.

Original publication

DOI

10.1037/a0015413

Type

Journal article

Journal

Neuropsychology

Publication Date

07/2009

Volume

23

Pages

519 - 528

Keywords

Aged, Aged, 80 and over, Analysis of Variance, Functional Laterality, Humans, Middle Aged, Neuropsychological Tests, Perceptual Disorders, Photic Stimulation, Psychomotor Performance, Reaction Time, Reference Values, Reproducibility of Results, Sensitivity and Specificity, Space Perception, Time Factors, Video Recording