A Comparison of English and French Naturalistic Listening Paradigms for the Assessment of Consciousness in Unresponsive Individuals | IEEE Conference Publication | IEEE Xplore

A Comparison of English and French Naturalistic Listening Paradigms for the Assessment of Consciousness in Unresponsive Individuals


Abstract:

Patients in intensive care for severe acute brain injury will undergo a series of behavioural and neurological assessments to evaluate their residual neural function and ...Show More

Abstract:

Patients in intensive care for severe acute brain injury will undergo a series of behavioural and neurological assessments to evaluate their residual neural function and track the progression of their recovery. However, the degree to which covert conscious awareness is retained during the acute stages of a serious brain injury is unclear. In this study, we developed an EEG protocol to assess narrative processing - a proxy measure of awareness - during English and French versions of a naturalistic listening task. In two groups of healthy controls, we used EEG and a correlated components analysis to uncover a common pattern of neural activity associated with following the plot of a short, suspenseful audio clip from the movie “Taken”. Inter-subject neural correlations (ISCs) were used to compare the similarity of the EEG between participants during intact and scrambled versions of the audio. We found that the intact English version of "Taken" produced significantly higher ISCs than the scrambled version, though we did not observe a similar effect for the French audio. However, both the intact English and French versions of "Taken" produced significantly more time windows of ISCs across the group than their respective scrambled versions. Finally, the time course of ISCs for the intact English audio was significantly correlated with an independent set of subjective ratings of suspense during the task, while the correlation between suspense and the time course of ISCs for the intact French audio approached significance. These preliminary results suggest that our naturalistic listening protocol could be used to assess narrative processing, and thus, preserved awareness at the bedside using EEG in patients with acute brain injury in critical care centres across Canada.
Date of Conference: 11-14 October 2020
Date Added to IEEE Xplore: 14 December 2020
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Conference Location: Toronto, ON, Canada

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