A functional near-infrared spectroscopy study of the effects of configural properties on sustained attention

Abstract

S. (2017)A functional near-infrared spectroscopy study of the effects of configural properties on sustained attention. Neuropsychologia, 94 . pp. 106-117. ISSN 1873-3514 Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/47512/1/Configural%20Properties%20fNIRS.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the Creative Commons Attribution Non-commercial No Derivatives licence and may be reused according to the conditions of the licence. For more details see: http://creativecommons.org/licenses/by-nc-nd/2.5/ A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractForty-five participants performed a vigilance task during which they were required to respond to a critical signal at a local feature level, while the global display was altered between groups (either a circle, a circle broken apart and reversed, or a reconnected figure). The shape in two of the groups formed a configurative whole (the circle and reconnected conditions), while the remaining shape had no complete global element (broken circle). Performance matched the results found in the previous experiments using this stimulus set, where a configural superiority effect was found to influence accuracy over time. Physiological data, measured using functional near-infrared spectroscopy, revealed elevated activation in the right pre-frontal cortex compared to the left pre-frontal cortex during the task. Additionally, bilateral activation was found in the conditions that formed configurative wholes, while hemispheric differences over time were found in the condition that did not. These findings suggest that configural aspects of stimuli may explain why non-typical laterality effects have been found in similar research.

Sensor Location Optimization of Wireless Wearable fNIRS System for Cognitive Workload Monitoring Using a Data-Driven Approach for Improved Wearability

“…Several studies related to cognitive function conform with this assumption from the observation of high hemodynamic activities in the PFC during the cognitive workloads [ 3 , 9 , 14 , 28 , 29 ]. This observation of regional cerebral activation during cognitive tasks leads to the implementation of the fNIRS modality in assessing cognitive workload [ 6 , 30 , 31 , 32 ] by sensing the PFC optically. These studies focused mainly on anatomically exploring the activation of the brain region by various cognitive processes at deep or shallow depth from the skin.…”