{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,22]],"date-time":"2025-04-22T07:54:45Z","timestamp":1745308485370,"version":"3.37.3"},"reference-count":38,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,11,23]],"date-time":"2018-11-23T00:00:00Z","timestamp":1542931200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Italian Ministry of Health","award":["GR-2011-02351397"]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"Stroke is a critical event that causes the disruption of neural connections. There is increasing evidence that the brain tries to reorganize itself and to replace the damaged circuits, by establishing compensatory pathways. Intra- and extra-cellular currents are involved in the communication between neurons and the macroscopic effects of such currents can be detected at the scalp through electroencephalographic (EEG) sensors. EEG can be used to study the lesions in the brain indirectly, by studying their effects on the brain electrical activity. The primary goal of the present work was to investigate possible asymmetries in the activity of the two hemispheres, in the case one of them is affected by a lesion due to stroke. In particular, the compressibility of High-Density-EEG (HD-EEG) recorded at the two hemispheres was investigated since the presence of the lesion is expected to impact on the regularity of EEG signals. The secondary objective was to evaluate if standard low density EEG is able to provide such information. Eighteen patients with unilateral stroke were recruited and underwent HD-EEG recording. Each EEG signal was compressively sensed, using Block Sparse Bayesian Learning, at increasing compression rate. The two hemispheres showed significant differences in the compressibility of EEG. Signals acquired at the electrode locations of the affected hemisphere showed a better reconstruction quality, quantified by the Structural SIMilarity index (SSIM), than the EEG signals recorded at the healthy hemisphere (p < 0.05), for each compression rate value. The presence of the lesion seems to induce an increased regularity in the electrical activity of the brain, thus an increased compressibility.<\/jats:p>","DOI":"10.3390\/s18124107","type":"journal-article","created":{"date-parts":[[2018,11,23]],"date-time":"2018-11-23T17:20:28Z","timestamp":1542993628000},"page":"4107","source":"Crossref","is-referenced-by-count":16,"title":["Compressibility of High-Density EEG Signals in Stroke Patients"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4962-3500","authenticated-orcid":false,"given":"Nadia","family":"Mammone","sequence":"first","affiliation":[{"name":"IRCCS Centro Neurolesi Bonino Pulejo, Via Palermo c\/da Casazza, SS. 113, 98124 Messina, Italy"}]},{"given":"Simona","family":"De Salvo","sequence":"additional","affiliation":[{"name":"IRCCS Centro Neurolesi Bonino Pulejo, Via Palermo c\/da Casazza, SS. 113, 98124 Messina, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7890-2897","authenticated-orcid":false,"given":"Cosimo","family":"Ieracitano","sequence":"additional","affiliation":[{"name":"DICEAM Department, Mediterranea<\/i> University of Reggio Calabria, Via Graziella Feo di Vito, 89060 Reggio Calabria, Italy"}]},{"given":"Silvia","family":"Marino","sequence":"additional","affiliation":[{"name":"IRCCS Centro Neurolesi Bonino Pulejo, Via Palermo c\/da Casazza, SS. 113, 98124 Messina, Italy"}]},{"given":"Emanuele","family":"Cartella","sequence":"additional","affiliation":[{"name":"IRCCS Centro Neurolesi Bonino Pulejo, Via Palermo c\/da Casazza, SS. 113, 98124 Messina, Italy"}]},{"given":"Alessia","family":"Bramanti","sequence":"additional","affiliation":[{"name":"Institute of Applied Sciences and Intelligent Systems Eduardo Caianiello<\/i> (ISASI), National Research Council (CNR), Via Torre Bianca, Mortelle, Istituto Marino, 98164 Messina, Italy"}]},{"given":"Roberto","family":"Giorgianni","sequence":"additional","affiliation":[{"name":"IRCCS Centro Neurolesi Bonino Pulejo, Via Palermo c\/da Casazza, SS. 113, 98124 Messina, Italy"}]},{"given":"Francesco C.","family":"Morabito","sequence":"additional","affiliation":[{"name":"DICEAM Department, Mediterranea<\/i> University of Reggio Calabria, Via Graziella Feo di Vito, 89060 Reggio Calabria, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1467","DOI":"10.3109\/02699052.2015.1071430","article-title":"Assessment of nociceptive system in vegetative and minimally conscious state by using laser evoked potentials","volume":"29","author":"Naro","year":"2015","journal-title":"Brain Inj."},{"key":"ref_2","first-page":"237","article-title":"Neurophysiological assessment for evaluating residual cognition in vegetative and minimally conscious state patients: A pilot study","volume":"30","author":"Caminiti","year":"2015","journal-title":"Funct. 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