Mapping Brain Activity During Loss of Situation Awareness: an EEG investigation of a basis for top-down influence on perception

Catherwood, Dianne F and Edgar, Graham K and Nikolla, Dritan and Alford, Christopher A and Brookes, David and Baker, Steven and White, Sarah (2014) Mapping Brain Activity During Loss of Situation Awareness: an EEG investigation of a basis for top-down influence on perception. Human Factors, 56 (8). pp. 1428-1452. ISSN 0018-7208

[img]
Preview
Text
Catherwood et al Mapping Brain activity Eprints 620.pdf
Available under License All Rights Reserved.

Download (695kB) | Preview

Abstract

Objective: The objective was to map brain activity during early intervals in loss of Situation Awareness (SA) to examine any co-activity in visual and high-order regions, reflecting grounds for top-down influences on level 1 SA. Background: Behavioural and neuroscience evidence indicates that high-order brain areas can engage before perception is complete. Inappropriate top-down messages may distort perception during loss of SA. Evidence of co-activity of perceptual and high-order regions would not confirm such influence but may reflect a basis for it. Methods: SA and Bias were measured using QASA (Quantitative Analysis of Situation Awareness) and brain activity recorded with 128-channel EEG (electroencephalography) during loss of SA. One task (15 participants) required identification of a target pattern and another task (10 participants) identification of “threat” in urban scenes. In both, the target was changed without warning, enforcing loss of SA. Key regions of brain activity were identified using source localization with sLORETA 150-160msec post-stimulus-onset in both tasks and also 100-110msec in the second task. Results: In both tasks, there was significant loss of SA and Bias shift (p ≤ .02), associated at both 150 and 100 msec intervals with co-activity of visual regions and prefrontal, anterior cingulate and parietal regions linked to cognition under uncertainty. Conclusion: There was early co-activity in high-order and visual perception regions that may provide a basis for top-down influence on perception. Application: Co-activity in high- and low-order brain regions may explain either beneficial or disruptive top-down influence on perception affecting level 1 SA in real-world operations.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: Situation awareness, situational awareness, SA, QUASA, QASA, signal detection theory, Quantitative analysis of situation awareness
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Q Science > Q Science (General)
Divisions: Schools and Research Institutes > School of Natural & Social Sciences > Psychological Sciences
Research Priority Areas: Sport, Exercise, Health & Wellbeing
Depositing User: Graham Edgar
Date Deposited: 09 Jun 2014 15:12
Last Modified: 19 Mar 2017 05:15
URI: http://eprints.glos.ac.uk/id/eprint/620

University Staff: Request a correction | Repository Editors: Update this record

University Of Gloucestershire

Bookmark and Share

Find Us On Social Media:

Social Media Icons Facebook Twitter Google+ YouTube Pinterest Linkedin

Other University Web Sites

University of Gloucestershire, The Park, Cheltenham, Gloucestershire, GL50 2RH. Telephone +44 (0)844 8010001.