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Cognitive tasks during walking affect cerebral blood flow signal features in middle cerebral arteries and their correlation to gait characteristics

Gatouillat, A and Bleton, H and VanSwearingen, J and Perera, S and Thompson, S and Smith, T and Sejdić, E (2015) Cognitive tasks during walking affect cerebral blood flow signal features in middle cerebral arteries and their correlation to gait characteristics. Behavioral and Brain Functions, 11 (1).

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Abstract

© 2015 Gatouillat et al. Gait is a complex process involving both cognitive and sensory ability and is strongly impacted by the environment. In this paper, we propose to study of the impact of a cognitive task during gait on the cerebral blood flow velocity, the blood flow signal features and the correlation of gait and blood flow features through a dual task methodology. Both cerebral blood flow velocity and gait characteristics of eleven participants with no history of brain or gait conditions were recorded using transcranial Doppler on mid-cerebral artery while on a treadmill. The cognitive task was induced by a backward counting starting from 10,000 with decrement of 7. Central blood flow velocity raw and envelope features were extracted in both time, frequency and time-scale domain; information-theoretic metrics were also extracted and statistical significances were inspected. A similar feature extraction was performed on the stride interval signal. Statistical differences between the cognitive and baseline trials, between the left and right mid-cerebral arteries signals and the impact of the antropometric variables where studied using linear mixed models. No statistical differences were found between the left and right mid-cerebral arteries flows or the baseline and cognitive state gait features, while statistical differences for specific features were measured between cognitive and baseline states. These statistical differences found between the baseline and cognitive states show that cognitive process has an impact on the cerebral activity during walking. The state was found to have an impact on the correlation between the gait and blood flow features.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Gatouillat, Aarg101@pitt.eduARG101
Bleton, H
VanSwearingen, Jjessievs@pitt.eduJESSIEVS
Perera, Sksp9@pitt.eduKSP9
Thompson, Sswt5@pitt.eduSWT5
Smith, T
Sejdić, Eesejdic@pitt.eduESEJDIC0000-0003-4987-8298
Date: 26 September 2015
Date Type: Publication
Journal or Publication Title: Behavioral and Brain Functions
Volume: 11
Number: 1
DOI or Unique Handle: 10.1186/s12993-015-0073-9
Schools and Programs: School of Medicine > Medicine
Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
Date Deposited: 09 Aug 2016 18:31
Last Modified: 02 Feb 2019 15:55
URI: http://d-scholarship.pitt.edu/id/eprint/29187

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