Title

Cerebral Lateralization Of Vigilance: A Function Of Task Difficulty

Keywords

Laterality; Near-infrared spectroscopy; Sustained attention; Vigilance

Abstract

Functional near infrared spectroscopy (fNIRS) measures of cerebral oxygenation levels were collected from participants performing difficult and easy versions of a 12. min vigilance task and for controls who merely watched the displays without a work imperative. For the active participants, the fNIRS measurements in both vigilance tasks showed higher levels of cerebral activity than was present in the case of the no-work controls. In the easier task, greater activation was found in the right than in the left cerebral hemisphere, matching previous results indicating right hemisphere dominance for vigilance. However, for the more difficult task, this laterality difference was not found, instead activation was bilateral. Unilateral hemispheric activation in vigilance may be a result of employing relatively easy/simple tasks, not vigilance per se. © 2010 Elsevier Ltd.

Publication Date

5-1-2010

Publication Title

Neuropsychologia

Volume

48

Issue

6

Number of Pages

1683-1688

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.neuropsychologia.2010.02.014

Socpus ID

77952550096 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77952550096

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