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Sensors 2016, 16(4), 540;

Acute Sleep Deprivation Induces a Local Brain Transfer Information Increase in the Frontal Cortex in a Widespread Decrease Context

Biomedical Engineering Research Centre, Department of Automatic Control, Universitat Politècnica de Catalunya, Barcelona 08028, Spain
Barcelona College of Industrial Engineering, Universitat Politècnica de Catalunya, Barcelona 08037, Spain
CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Zaragoza 50018, Spain
Drug Research Centre, Hospital de la Santa Creu i Sant Pau, Barcelona 08026, Spain
Department of Pharmacology and Therapeutics, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
CIBER de Salud Mental (CIBERSAM), Madrid 28029, Spain
Sleep Unit, Respiratory Department, Hospital de la Santa Creu i Sant Pau, Barcelona 08028, Spain
Author to whom correspondence should be addressed.
Academic Editors: Steffen Leonhardt and Daniel Teichmann
Received: 19 February 2016 / Revised: 5 April 2016 / Accepted: 12 April 2016 / Published: 14 April 2016
(This article belongs to the Special Issue Noninvasive Biomedical Sensors)
Full-Text   |   PDF [3049 KB, uploaded 14 April 2016]   |  


Sleep deprivation (SD) has adverse effects on mental and physical health, affecting the cognitive abilities and emotional states. Specifically, cognitive functions and alertness are known to decrease after SD. The aim of this work was to identify the directional information transfer after SD on scalp EEG signals using transfer entropy (TE). Using a robust methodology based on EEG recordings of 18 volunteers deprived from sleep for 36 h, TE and spectral analysis were performed to characterize EEG data acquired every 2 h. Correlation between connectivity measures and subjective somnolence was assessed. In general, TE showed medium- and long-range significant decreases originated at the occipital areas and directed towards different regions, which could be interpreted as the transfer of predictive information from parieto-occipital activity to the rest of the head. Simultaneously, short-range increases were obtained for the frontal areas, following a consistent and robust time course with significant maps after 20 h of sleep deprivation. Changes during sleep deprivation in brain network were measured effectively by TE, which showed increased local connectivity and diminished global integration. TE is an objective measure that could be used as a potential measure of sleep pressure and somnolence with the additional property of directed relationships. View Full-Text
Keywords: prolonged wakefulness; sleep deprivation (SD); electroencephalography (EEG) transfer entropy (TE) prolonged wakefulness; sleep deprivation (SD); electroencephalography (EEG) transfer entropy (TE)

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Alonso, J.F.; Romero, S.; Mañanas, M.A.; Alcalá, M.; Antonijoan, R.M.; Giménez, S. Acute Sleep Deprivation Induces a Local Brain Transfer Information Increase in the Frontal Cortex in a Widespread Decrease Context. Sensors 2016, 16, 540.

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