Non-lateralised deficits in anti-saccade performance in patients with hemispatial neglect

Butler, Stephen H., Rossit, Stephanie, Gilchrist, Iain D., Ludwig, Casimir J.h., Olk, Bettina, Muir, Keith, Reeves, Ian and Harvey, Monika (2009) Non-lateralised deficits in anti-saccade performance in patients with hemispatial neglect. Neuropsychologia, 47 (12). pp. 2488-2495. ISSN 0028-3932

Full text not available from this repository. (Request a copy)

Abstract

We tested patients suffering from hemispatial neglect on the anti-saccade paradigm to assess voluntary control of saccades. In this task participants are required to saccade away from an abrupt onset target. As has been previously reported, in the pro-saccade condition neglect patients showed increased latencies towards targets presented on the left and their accuracy was reduced as a result of greater undershoot. To our surprise though, in the anti-saccade condition, we found strong bilateral effects: the neglect patients produced large numbers of erroneous pro-saccades to both left and right stimuli. This deficit in voluntary control was present even in patients whose lesions spared the frontal lobes. These results suggest that the voluntary control of action is supported by an integrated network of cortical regions, including more posterior areas. Damage to one or more components within this network may result in impaired voluntary control.

Item Type: Article
Faculty \ School: Faculty of Social Sciences > School of Psychology
Depositing User: Pure Connector
Date Deposited: 26 Oct 2015 16:01
Last Modified: 24 Jul 2019 19:13
URI: https://ueaeprints.uea.ac.uk/id/eprint/54822
DOI: 10.1016/j.neuropsychologia.2009.04.022

Actions (login required)

View Item View Item