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Stavropoulos I, Hasegawa H, Agirre-Arrizubieta Z, Hammers A, Jarosz J, Valentin A, Mullatti N, Hughes E, Selway R, Elwes R. Stereo-EEG exploration in a case of eating epilepsy with cutlery-induced seizures. Seizure 2019; 74:56-59. [PMID: 31835055 DOI: 10.1016/j.seizure.2019.10.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/07/2019] [Accepted: 10/19/2019] [Indexed: 11/18/2022] Open
Affiliation(s)
- Ioannis Stavropoulos
- Department of Clinical Neurophysiology, King's College Hospital, London, UK; Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
| | | | | | - Alexander Hammers
- King's College London & Guy's and St Thomas' PET Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Josef Jarosz
- Department of Neuroradiology, King's College Hospital, London, UK
| | - Antonio Valentin
- Department of Clinical Neurophysiology, King's College Hospital, London, UK; Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Nandini Mullatti
- Department of Clinical Neurophysiology, King's College Hospital, London, UK
| | - Elaine Hughes
- Department of Paediatric Neurosciences, King's College Hospital, London, UK
| | - Richard Selway
- Department of Neurosurgery, King's College Hospital, London, UK
| | - Robert Elwes
- Department of Clinical Neurophysiology, King's College Hospital, London, UK
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Vega YH, Smith A, Cockerill H, Tang S, Agirre-Arrizubieta Z, Goyal S, Pina M, Akman CI, Jolleff N, McGinnity C, Gomez K, Gupta R, Hughes E, Jackman J, McCormick D, Oren C, Scott D, Taylor J, Trounce J, Clarke T, Kugler S, Mandelbaum DE, McGoldrick P, Wolf S, Strug LJ, Pal DK. Risk factors for reading disability in families with rolandic epilepsy. Epilepsy Behav 2015; 53:174-9. [PMID: 26580214 PMCID: PMC4719157 DOI: 10.1016/j.yebeh.2015.10.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/14/2015] [Accepted: 10/16/2015] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The high prevalence and impact of neurodevelopmental comorbidities in childhood epilepsy are now well known, as are the increased risks and familial aggregation of reading disability (RD) and speech sound disorder (SSD) in rolandic epilepsy (RE). The risk factors for RD in the general population include male sex, SSD, and ADHD, but it is not known if these are the same in RE or whether there is a contributory role of seizure and treatment-related variables. METHODS An observational study of 108 probands with RE (age range: 3.6-22 years) and their 159 siblings (age range: 1-29 years; 83 with EEG data) were singly ascertained in the US or UK through a proband affected by RE. We used a nested case-control design, multiple logistic regression, and generalized estimating equations to test the hypothesis of an association between RD and seizure variables or antiepileptic drug treatment in RE; we also assessed an association between EEG focal sharp waves and RD in siblings. RESULTS Reading disability was reported in 42% of probands and 22% of siblings. Among probands, RD was strongly associated with a history of SSD (OR: 9.64, 95% CI: 2.45-37.21), ADHD symptoms (OR: 10.31, 95% CI: 2.15-49.44), and male sex (OR: 3.62, 95% CI: 1.11-11.75) but not with seizure or treatment variables. Among siblings, RD was independently associated only with SSD (OR: 4.30, 95% CI: 1.42-13.0) and not with the presence of interictal EEG focal sharp waves. SIGNIFICANCE The principal risk factors for RD in RE are SSD, ADHD, and male sex, the same risk factors as for RD without epilepsy. Seizure or treatment variables do not appear to be important risk factors for RD in probands with RE, and there was no evidence to support interictal EEG focal sharp waves as a risk factor for RD in siblings. Future studies should focus on the precise neuropsychological characterization of RD in families with RE and on the effectiveness of standard oral-language and reading interventions.
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Affiliation(s)
| | | | | | - Shan Tang
- King’s College London, UK,King’s Health Partners, London, UK
| | | | | | | | - Cigdem I Akman
- Department of Neurology, Columbia University, New York, USA
| | - Nicola Jolleff
- East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
| | | | | | | | | | | | | | | | | | | | | | - Tara Clarke
- Department of Epidemiology, Columbia University, New York, USA
| | - Steven Kugler
- Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, PA, USA
| | - David E Mandelbaum
- Hasbro Children’s Hospital and the Warren Alpert Medical School of Brown University, Providence, RI, USA
| | | | | | - Lisa J Strug
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto; Canada,Dalla Lana School of Public Health, University of Toronto, Canada
| | - Deb K Pal
- King's College London, UK; King's Health Partners, London, UK.
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Agirre-Arrizubieta Z, Thai NJ, Valentín A, Furlong PL, Seri S, Selway RP, Elwes RDC, Alarcón G. The value of Magnetoencephalography to guide electrode implantation in epilepsy. Brain Topogr 2013; 27:197-207. [PMID: 24249204 DOI: 10.1007/s10548-013-0330-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 11/05/2013] [Indexed: 11/28/2022]
Abstract
To investigate if Magnetoencephalography (MEG) can add non-redundant information to guide implantation sites for intracranial recordings (IR). The contribution of MEG to intracranial recording planning was evaluated in 12 consecutive patients assessed pre-surgically with MEG followed by IR. Primary outcome measures were the identification of focal seizure onset in IR and favorable surgical outcome. Outcome measures were compared to those of 12 patients matched for implantation type in whom non-invasive pre-surgical assessment suggested clear hypotheses for implantation (non-MEG group). In the MEG group, non-invasive assessment without MEG was inconclusive, and MEG was then used to further help identify implantation sites. In all MEG patients, at least one virtual MEG electrode generated suitable hypotheses for the location of implantations. No differences in outcome measures were found between non-MEG and MEG groups. Although the MEG group included more complex patients, it showed similar percentage of successful implantations as the non-MEG group. This suggests that MEG can contribute to identify implantation sites where standard methods failed.
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Huiskamp G, Agirre-Arrizubieta Z, Leijten F. Regional differences in the sensitivity of MEG for interictal spikes in epilepsy. Brain Topogr 2010; 23:159-64. [PMID: 20151193 PMCID: PMC2874057 DOI: 10.1007/s10548-010-0134-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2009] [Accepted: 02/01/2010] [Indexed: 11/16/2022]
Abstract
MEG interictal spikes as recorded in epilepsy patients are a reflection of intracranial interictal activity. This study investigates the relationship between the estimated sources of MEG spikes and the location, distribution and size of interictal spikes in the invasive ECoG of a group of 38 epilepsy patients that are monitored for pre-surgical evaluation. An amplitude/surface area measure is defined to quantify and rank ECoG spikes. It is found that all MEG spikes are associated with an ECoG spike that is among the three highest ranked in a patient. Among the different brain regions considered, the fronto-orbital, inter-hemispheric, tempero-lateral and central regions stand out. In an accompanying simulation study it is shown that for hypothesized extended sources of larger sizes, as suggested by the data, source location, orientation and curvature can partly explain the observed sensitivity of MEG for interictal spikes.
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Affiliation(s)
- Geertjan Huiskamp
- Department of Neurology and Clinical Neurophysiology, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, F02.230 Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
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Abstract
This study investigates the relationship between the sources of MEG interictal spikes and the distribution of spikes in invasive ECoG in a group of 38 epilepsy patients. An amplitude/surface area measure is defined to quantify ECoG spikes. It is found that all MEG spikes are associated with an ECoG spike that is, according to this measure, among the largest in each patient. For different brain regions considered the inter-hemispheric, tempero-lateral and central regions stand out. However, MEG may only see part of the often complex ECoG spike. In an accompanying simulation study it is shown that MEG as predicted from measured complex ECoG spikes resemble measured MEG and show similar shortcomings with respect to localization.
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Affiliation(s)
- Geertjan Huiskamp
- Department of Neurology and Clinical Neurophysiology, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, F02.230 Heidelberglaan 100, 3584 CX Utrecht, The Netherlands. ghuiskam@ umcutrecht.nl
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