Event Abstract Back to Event Early post-stroke measures of slowed frontal lobe activity can help predict cognitive outcomes Emma Schleiger1, 2, Nabeel Sheikh2, 3, Tennille Rowland4, Andrew Wong3, Stephen Read3 and Simon Finnigan5* 1 The University of Queensland, School of Medicine, Australia 2 The University of Queensland, Centre for Clinical Research, Australia 3 Royal Brisbane and Women's Hospital, Acute Stroke Unit, Australia 4 Royal Brisbane and Women's Hospital, Occupational Therapy, Australia 5 Greenslopes Private Hospital, Gallipoli Medical Research Foundation, Australia Background: Quantitative electroencephalography (QEEG) provides indices of brain (dys)function which have proven informative for prognostication of generalised, post-stroke functional outcomes. Their value for prognostication of cognitive outcomes from stroke has not been investigated. In anterior circulation ischaemic stroke patients we analyse correlations between pre-discharge, frontal lobe-specific QEEG indices and cognitive outcome measures. Method: Anterior circulation ischaemic stroke was confirmed using computed tomography perfusion. Resting EEG was recorded at mean 69 hours (range 19-99) after symptom onset using a standard 19-electrode array (although only frontal electrode data were analysed). At mean 104 days (range 70-209) post-stroke, the functional assessment and functional independence measure (FIMFAM) - assessing functional, behavioural and cognitive outcomes - was administered. From 2 left and 2 right hemisphere frontal electrodes, 2 QEEG indices were computed: delta/alpha ratio (DAR), sensitive to degree of abnormal slow activity, and; brain symmetry index (BSI), sensitive to degree of interhemispheric voltage asymmetry. Spearman's rho was used to correlate these QEEG indices with the sub-total of 5 FIMFAM cognitive items (assessing attention, problem solving, memory, safety judgment and orientation) Results: Twenty-six patients were recruited, 4 died and 1 was lost to follow-up. Hence 21 patients' data (11 female, mean age: 69 years, range 38-84) were analysed. DAR correlated significantly with cognitive function (r=-0.685, p?0.001), whereas BSI did not (r=-0.433, p=0.05). Discussion: These preliminary results indicate that following anterior ischaemic stroke the DAR, computed from EEG recorded pre-discharge from 4 frontal electrodes, may uniquely inform prognostication of post-stroke cognitive outcomes. Frontal alpha power (and DAR) may index post-stroke attentional capacity, which is reportedly a key determinant of functional outcomes. Keywords: Stroke, EEG, alpha, frontal lobes, Cognitive Function, qEEG, anterior stroke, post-stroke cognition Conference: XII International Conference on Cognitive Neuroscience (ICON-XII), Brisbane, Queensland, Australia, 27 Jul - 31 Jul, 2014. Presentation Type: Poster Topic: Cognition and Executive Processes Citation: Schleiger E, Sheikh N, Rowland T, Wong A, Read S and Finnigan S (2015). Early post-stroke measures of slowed frontal lobe activity can help predict cognitive outcomes. Conference Abstract: XII International Conference on Cognitive Neuroscience (ICON-XII). doi: 10.3389/conf.fnhum.2015.217.00400 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 19 Feb 2015; Published Online: 24 Apr 2015. * Correspondence: Dr. Simon Finnigan, Greenslopes Private Hospital, Gallipoli Medical Research Foundation, Brisbane, Australia, finnigan@uq.edu.au Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Emma Schleiger Nabeel Sheikh Tennille Rowland Andrew Wong Stephen Read Simon Finnigan Google Emma Schleiger Nabeel Sheikh Tennille Rowland Andrew Wong Stephen Read Simon Finnigan Google Scholar Emma Schleiger Nabeel Sheikh Tennille Rowland Andrew Wong Stephen Read Simon Finnigan PubMed Emma Schleiger Nabeel Sheikh Tennille Rowland Andrew Wong Stephen Read Simon Finnigan Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.