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7. Pre- to Postoperative Longitudinal Follow-up of Phoneme Perception in Glioma Patients: Evidence from the Mismatch Negativity and P300.

Author

Criel, Yana, Baert, Edward, Okito, Jean-Pierre Kalala, Hallaert, Giorgio, Van Roost, Dirk, De Baerdemaeker, Luc, Degrève, Wouter, Miatton, Marijke, Santens, Patrick, Van Mierlo, Pieter, and De Letter, Miet

Subjects
PREOPERATIVE period, BIOLOGICAL evolution, GLIOMAS, RESEARCH funding, NEUROPLASTICITY, CRANIOTOMY, POSTOPERATIVE period, ELECTROPHYSIOLOGY
Abstract

Background and Aims: Glioma growth in eloquent language areas induces adaptive activation changes in the language network. The present study aimed to (1) investigate the pre- to postoperative evolution of neural phoneme perception processes in glioma patients and (2) assess if event-related potentials (ERPs) reflecting phoneme perception can provide added value to the diagnostic approach in individuals undergoing awake surgery. Methods and Procedures: In five persons undergoing an awake craniotomy for the resection of a glioma, pre- and postoperative behavioural language assessment (Aachen Aphasia Test, Comprehensive Aphasia Test and Boston Naming Test) and electrophysiological investigation of phoneme perception was performed. For the latter, ERPs were obtained through the administration of an inattentive (Mismatch Negativity; MMN) and attentive (P300) oddball paradigm containing a phonemic articulation place contrast during EEG recording. Outcomes and Results: Aberrant phoneme categorization processing was evidenced in all five participants preoperatively based on the MMN and P300 amplitude and latency. Moreover, mild behavioural impairments were found in four participants at this time. Postoperatively, three out of five participants reached behavioural ceiling effects, while four individuals displayed normalization of electrophysiological measures. Conclusions: While neural processing of phoneme contrasts was preoperatively affected by glioma-induced disturbances, a high potential for postsurgical plasticity was shown. As four participants presented with a high grade glioma, tumour grade might partially account for this pattern. Addition of electrophysiological tests to the language assessment could provide benefits in both the preand postoperative clinical diagnostic approach in glioma patients. These preliminary results need validation in a larger sample. [ABSTRACT FROM AUTHOR]

Published
2024
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18. Deep Brain Stimulation of the Anterior Nucleus of the Thalamus in Drug-Resistant Epilepsy in the MORE Multicenter Patient Registry

Author

Peltola, Jukka, Colon, Albert J., Pimentel, José, Coenen, Volker A., Gil-Nagel, Antonio, Gonçalves Ferreira, António, Lehtimäki, Kai, Ryvlin, Philippe, Taylor, Rod S., Ackermans, Linda, Ardesch, Jacqueline, Bentes, Carla, Bosak, Magdalena, Burneo, Jorge G., Chamadoira, Clara, Elger, Christian E., Erőss, Loránd, Fabo, Dániel, Faulkner, Howard, Gawlowicz, Jacek, Gharabaghi, Alireza, Iacoangeli, Maurizio, Janszky, Jozsef, Järvenpää, Soila, Kaufmann, Elisabeth, Kho, Kuan H., Kumlien, Eva, Laufs, Helmut, Lettieri, Christian, Linhares, Paulo, Noachtar, Soheyl, Parrent, Andrew, Pataraia, Ekaterina, Patel, Nikunj K., Peralta, Ana, Rácz, Attila, Rainha Campos, Alexandre, Rego, Ricardo, Ricciuti, Riccardo A., Rona, Sabine, Rouhl, Rob P.W., Schulze-Bonhage, Andreas, Schuurman, Rick, Sprengers, Mathieu, Sufianov, Albert, Temel, Yasin, Theys, Tom, Van Paesschen, Wim, Van Roost, Dirk, Vaz, Rui, Vonck, Kristl, Wagner, Louis, Zwemmer, Jack, Abouihia, Abdallah, Brionne, Thomas C., Gielen, Frans, Boon, Paul A.J.M., Tampere University, Clinical Medicine, Department of Neurosciences and Rehabilitation, and Repositório da Universidade de Lisboa

Subjects
Medicine and Health Sciences, Neurology (clinical), 3124 Neurology and psychiatry
Abstract

Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited., Background and objectives: The efficacy of deep brain stimulation of the anterior nucleus of the thalamus (ANT DBS) in patients with drug-resistant epilepsy (DRE) was demonstrated in the double-blind Stimulation of the Anterior Nucleus of the Thalamus for Epilepsy randomized controlled trial. The Medtronic Registry for Epilepsy (MORE) aims to understand the safety and longer-term effectiveness of ANT DBS therapy in routine clinical practice. Methods: MORE is an observational registry collecting prospective and retrospective clinical data. Participants were at least 18 years old, with focal DRE recruited across 25 centers from 13 countries. They were followed for at least 2 years in terms of seizure frequency (SF), responder rate (RR), health-related quality of life (Quality of Life in Epilepsy Inventory 31), depression, and safety outcomes. Results: Of the 191 patients recruited, 170 (mean [SD] age of 35.6 [10.7] years, 43% female) were implanted with DBS therapy and met all eligibility criteria. At baseline, 38% of patients reported cognitive impairment. The median monthly SF decreased by 33.1% from 15.8 at baseline to 8.8 at 2 years (p < 0.0001) with 32.3% RR. In the subgroup of 47 patients who completed 5 years of follow-up, the median monthly SF decreased by 55.1% from 16 at baseline to 7.9 at 5 years (p < 0.0001) with 53.2% RR. High-volume centers (>10 implantations) had 42.8% reduction in median monthly SF by 2 years in comparison with 25.8% in low-volume center. In patients with cognitive impairment, the reduction in median monthly SF was 26.0% by 2 years compared with 36.1% in patients without cognitive impairment. The most frequently reported adverse events were changes (e.g., increased frequency/severity) in seizure (16%), memory impairment (patient-reported complaint, 15%), depressive mood (patient-reported complaint, 13%), and epilepsy (12%). One definite sudden unexpected death in epilepsy case was reported. Discussion: The MORE registry supports the effectiveness and safety of ANT DBS therapy in a real-world setting in the 2 years following implantation. Classification of evidence: This study provides Class IV evidence that ANT DBS reduces the frequency of seizures in patients with drug-resistant focal epilepsy., The MORE registry was sponsored and funded by Medtronic, plc.

Published
2023

19. A prospective, multicenter study of cardiac-based seizure detection to activate vagus nerve stimulation

Author

Boon, Paul, Vonck, Kristl, van Rijckevorsel, Kenou, Tahry, Riem El, Elger, Christian E., Mullatti, Nandini, Schulze-Bonhage, Andreas, Wagner, Louis, Diehl, Beate, Hamer, Hajo, Reuber, Markus, Kostov, Hrisimir, Legros, Benjamin, Noachtar, Soheyl, Weber, Yvonne G., Coenen, Volker A., Rooijakkers, Herbert, Schijns, Olaf E.M.G., Selway, Richard, Van Roost, Dirk, Eggleston, Katherine S., Van Grunderbeek, Wim, Jayewardene, Amara K., and McGuire, Ryan M.

Published
2015
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29. Cognitive tasks propagate the neural entrainment in response to a visual 40 Hz stimulation in humans

Author

Khachatryan, Elvira, Wittevrongel, Benjamin, Reinartz, Mariska, Dauwe, Ine, Carrette, Evelien, Meurs, Alfred, Van Roost, Dirk, Boon, Paul, and Van Hulle, Marc M.

Subjects
cognitive task, Aging, Science & Technology, Geriatrics & Gerontology, electrocorticography (ECoG), ENtrainment Using Sensory stimulation (GENUS), Cognitive Neuroscience, MEMORY, Neurosciences, Gamma ENtrainment Using Sensory stimulation (GENUS), Social Sciences, cognitive decline, DISEASE, Medicine and Health Sciences, Neurosciences & Neurology, electroencephalography (EEG), Gamma, Life Sciences & Biomedicine
Abstract

IntroductionAlzheimer's disease is one of the great challenges in the coming decades, and despite great efforts, a widely effective disease-modifying therapy in humans remains elusive. One particular promising non-pharmacological therapy that has received increased attention in recent years is based on the Gamma ENtrainment Using Sensory stimulation (GENUS), a high-frequency neural response elicited by a visual and/or auditory stimulus at 40 Hz. While this has shown to be effective in animal models, studies on human participants have reported varying success. The current work hypothesizes that the varying success in humans is due to differences in cognitive workload during the GENUS sessions.MethodsWe recruited a cohort of 15 participants who underwent a scalp-EEG recording as well as one epilepsy patient who was implanted with 50 subdural surface electrodes over temporo-occipital and temporo-basal cortex and 14 depth contacts that targeted the hippocampus and insula. All participants completed several GENUS sessions, in each of which a different cognitive task was performed.ResultsWe found that the inclusion of a cognitive task during the GENUS session not only has a positive effect on the strength and extent of the gamma entrainment, but also promotes the propagation of gamma entrainment to additional neural areas including deep ones such as hippocampus which were not recruited when no cognitive task was required from the participants. The latter is of particular interest given that the hippocampal complex is considered to be one of the primary targets for AD therapies.DiscussionThis work introduces a possible improvement strategy for GENUS therapy that might contribute to increasing the efficacy of the therapy or shortening the time needed for the positive outcome.

Published
2022

38. Intracranial dural arteriovenous fistula successfully treated by combined open-endovascular procedure

Author

Hallaert, Giorgio G., De Keukeleire, Katrien M., Vanhauwaert, Dimitri J., Defreyne, Luc, and Van Roost, Dirk

Subjects
Fistula, Arteriovenous -- Care and treatment, Fistula, Arteriovenous -- Case studies, Fistula, Arteriovenous -- Diagnosis, Magnetic resonance imaging -- Usage, Angiography -- Usage, Angiography -- Health aspects, Blood vessels -- Surgery, Blood vessels -- Usage, Blood vessels -- Health aspects, Health, Psychology and mental health
Published
2010

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