This is a peer-reviewed, post-print (final draft post-refereeing) version of the following published document and is licensed under All Rights Reserved license: Catherwood, Dianne F, Edgar, Graham K, Nikolla, Dritan, Alford, Christopher A, Brookes, David, Baker, Steven ORCID: 0000-0002-3029- 8931 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 Official URL: http://journals.sagepub.com/doi/abs/10.1177/0018720814537070 DOI: http://dx.doi.org/10.1177/0018720814537070 EPrint URI: http://eprints.glos.ac.uk/id/eprint/620 Disclaimer The University of Gloucestershire has obtained warranties from all depositors as to their title in the material deposited and as to their right to deposit such material. The University of Gloucestershire makes no representation or warranties of commercial utility, title, or fitness for a particular purpose or any other warranty, express or implied in respect of any material deposited. The University of Gloucestershire makes no representation that the use of the materials will not infringe any patent, copyright, trademark or other property or proprietary rights. The University of Gloucestershire accepts no liability for any infringement of intellectual property rights in any material deposited but will remove such material from public view pending investigation in the event of an allegation of any such infringement. PLEASE SCROLL DOWN FOR TEXT.