Reducing alertness does not affect line bisection bias in neurotypical participants.

Smaczny, Stefan; Bauder, Dominik; Sperber, Christoph; Karnath, Hans-Otto; de Haan, Bianca (2024). Reducing alertness does not affect line bisection bias in neurotypical participants. Experimental brain research, 242(1), pp. 195-204. Springer 10.1007/s00221-023-06738-y

Preview

Text s00221-023-06738-y.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (785kB) | Preview

Alertness, or one's general readiness to respond to stimulation, has previously been shown to affect spatial attention. However, most of this previous research focused on speeded, laboratory-based reaction tasks, as opposed to the classical line bisection task typically used to diagnose deficits of spatial attention in clinical settings. McIntosh et al. (Cogn Brain Res 25:833-850, 2005) provide a form of line bisection task which they argue can more sensitively assess spatial attention. Ninety-eight participants were presented with this line bisection task, once with and once without spatial cues, and both before and after a 50-min vigilance task that aimed to decrease alertness. A single participant was excluded due to potentially inconsistent behaviour in the task, leaving 97 participants for the full analyses. While participants were, on a group level, less alert after the 50-min vigilance task, they showed none of the hypothesised effects of reduced alertness on spatial attention in the line bisection task, regardless of with or without spatial cues. Yet, they did show the proposed effect of decreased alertness leading to a lower level of general attention. This suggests that alertness has no effect on spatial attention, as measured by a line bisection task, in neurotypical participants. We thus conclude that, in neurotypical participants, the effect of alertness on spatial attention can be examined more sensitively with tasks requiring a speeded response compared to unspeeded tasks.

Interest & Impact

Downloads

4 since deposited on 24 Nov 2023
4 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item