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Non Epileptic Seizures

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https://www.readbyqxmd.com/read/28808801/post-operative-seizures-after-burr-hole-evacuation-of-chronic-subdural-hematomas-is-prophylactic-anti-epileptic-medication-needed
#1
Gabriel Flores, Juan C Vicenty, Emil A Pastrana
INTRODUCTION: There are limited data with regards to the associated risk of post-operative seizures in patients with surgically treated chronic subdural hematomas (CSDHs). The use of anti-epileptic drugs (AEDs) is associated with significant side effects. METHODS: A retrospective chart review was performed on patients operated via burr hole for CSDH in our institution from 2004 to 2013. Post-operative seizures at 1-year follow-up were identified. Demographic data, medical history, and imaging characteristics were recorded...
August 15, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28808783/post-stroke-seizures-are-clinically-underestimated
#2
Carla Bentes, Hugo Martins, Ana Rita Peralta, Carlos Casimiro, Carlos Morgado, Ana Catarina Franco, Ana Catarina Fonseca, Ruth Geraldes, Patrícia Canhão, Teresa Pinho E Melo, Teresa Paiva, José M Ferro
Cerebrovascular disease is the leading cause of epilepsy in adults, although post-stroke seizures reported frequency is variable and few studies used EEG in their identification. To describe and compare EEG and clinical epileptic manifestations frequency in patients with an anterior circulation ischaemic stroke. Prospective study of acute anterior circulation ischaemic stroke patients, consecutively admitted to a Stroke Unit over 24 months and followed-up for 1 year. All patients underwent standardized clinical and diagnostic assessment...
August 14, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28808618/neuroimaging-studies-in-patients-with-psychogenic-non-epileptic-seizures-a-systematic-meta-review
#3
REVIEW
Marco Mcsweeney, Markus Reuber, Liat Levita
Psychogenic Non-epileptic Seizures (PNES) are 'medically unexplained' seizure-like episodes which superficially resemble epileptic seizures but which are not caused by epileptiform discharges in the brain. While many experts see PNES disorder as a multifactorial biopsychosocial condition, little is known about the neurobiological processes which may predispose, precipitate and/or perpetuate PNES symptomology. This systematic meta-review advances our knowledge and understanding of the neurobiological correlates of PNES by providing an up-to-date assessment of neuroimaging studies performed on individuals with PNES...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28805769/-psychiatry-of-the-future-an-overview-of-foreign-scientists-opinions-of-the-position-of-psychiatry-in-the-modern-world
#4
E D Belousova, N N Zavadenko, A A Kholin, A A Sharkov
This review presents the recently published revised classifications of epilepsies and seizure types developed by the International League Against Epilepsy (ILAE). The Classification of Epilepsies includes several diagnostic levels (steps): 1) from seizure type to epilepsy type (generalized/focal/combined generalized and focal/unknown), 2) diagnosis of epilepsy syndrome 3) etiology (genetic/ structural/ infectious/ metabolic/ immune/unknown). A clinician can use any level of the classification. Operational classification of seizure types is replaced by the previous classification that was grounded on the anatomical basis...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28790891/adenosine-a1-receptor-antagonism-abolished-the-anti-seizure-effects-of-exogenous-ketone-supplementation-in-wistar-albino-glaxo-rijswijk-rats
#5
Zsolt Kovács, Dominic P D'Agostino, Arpád Dobolyi, Csilla Ari
The state of therapeutic ketosis can be achieved by using the ketogenic diet (KD) or exogenous ketone supplementation. It was suggested previously that the adenosinergic system may be involved in the mediating effect of KD on suppressing seizure activity in different types of epilepsies, likely by means of adenosine A1 receptors (A1Rs). Thus, we tested in the present study whether exogenous ketone supplements (ketone ester: KE, 2.5 g/kg/day; ketone salt/KS + medium chain triglyceride/MCT: KSMCT, 2.5 g/kg/day) applied sub-chronically (for 7 days) by intragastric gavage can modulate absence epileptic activity in genetically absence epileptic Wistar Albino Glaxo/Rijswijk (WAG/Rij) rats...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28770498/psychogenic-non-epileptic-seizures
#6
REVIEW
David K Chen, Esha Sharma, W Curt LaFrance
PURPOSE OF REVIEW: In this review, we elucidate the evaluation process involved in the diagnosis of psychogenic non-epileptic seizures (PNES). Minimum clinical criteria required to attain this diagnosis via a staged approach are delineated. The psychological underpinnings and management of PNES from the neurologists' perspective are also explored. RECENT FINDINGS: Helpful clues can be deduced from history-taking, seizure semiology, ictal/peri-ictal physical exam, and ictal/inter-ictal EEG data...
September 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28766407/anticonvulsant-effects-of-thiamine-on-pentylenetetrazole-induced-seizure-in-mice
#7
Azam Mesdaghinia, Marziye Alinejad, Alireza Abed, Azhdar Heydari, Hamid Reza Banafshe
OBJECTIVES: Thiamine serves as a cofactor for several enzymes involved in brain function and neurotransmitters biosynthesis. Thiamine-dependent enzymes are important for oxidant stress defenses. Several studies have reported that thiamine deficiency in the central nervous system reduces seizure threshold. The present study was designed to investigate the effect of acute and chronic administration of thiamine alone and in combination with sub-effective dose of diazepam on pentylenetetrazole (PTZ)-induced tonic-clonic seizures in mice...
August 2, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28758966/variability-of-creatine-metabolism-genes-in-children-with-autism-spectrum-disorder
#8
Jessie M Cameron, Valeriy Levandovskiy, Wendy Roberts, Evdokia Anagnostou, Stephen Scherer, Alvin Loh, Andreas Schulze
Creatine deficiency syndrome (CDS) comprises three separate enzyme deficiencies with overlapping clinical presentations: arginine:glycine amidinotransferase (GATM gene, glycine amidinotransferase), guanidinoacetate methyltransferase (GAMT gene), and creatine transporter deficiency (SLC6A8 gene, solute carrier family 6 member 8). CDS presents with developmental delays/regression, intellectual disability, speech and language impairment, autistic behaviour, epileptic seizures, treatment-refractory epilepsy, and extrapyramidal movement disorders; symptoms that are also evident in children with autism...
July 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28750290/high-frequency-activity-overriding-cortico-cortical-evoked-potentials-reflects-altered-excitability-in-the-human-epileptic-focus
#9
Katsuya Kobayashi, Riki Matsumoto, Masao Matsuhashi, Kiyohide Usami, Akihiro Shimotake, Takeharu Kunieda, Takayuki Kikuchi, Kazumichi Yoshida, Nobuhiro Mikuni, Susumu Miyamoto, Hidenao Fukuyama, Ryosuke Takahashi, Akio Ikeda
OBJECTIVE: We aimed to clarify that high frequency activity (HFA) of cortico-cortical evoked potentials (CCEPs), elicited by single pulse electrical stimulation (SPES), reflects cortical excitability. METHODS: We recruited 16 patients with refractory partial epilepsy who had chronic subdural electrode implantation for presurgical evaluation. A repetitive SPES was given to (1) the seizure onset zone (SOZ) and (2) the control cortices (non-seizure onset zone: nSOZ)...
July 8, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28745663/-differential-diagnosis-of-paroxysms-of-tonic-muscle-tension-in-children-of-early-age-with-delay-of-psychomotor-development-and-abnormal-neurologic-status
#10
M B Mironov, M Yu Bobylova, I V Nekrasova, T M Krasilschikova, M M Gunchenko, M N Sarzhina, A S Petrukhin, S G Burd, T T Batisheva
AIM: To study neurologic status, results of video-EEG monitoring and magnetic resonance imaging in children under 3 years old with paroxysms of tonic muscle tension. MATERIAL AND METHODS: One hundred and forty-six infants and young children with motor disturbances and different variants of clinically similar epileptic seizures, hyperkinesis and stereotypes were examined. RESULTS AND CONCLUSION: Cerebral palsy (91%), genetic and chromosomal abnormalities (6%), brain malformations (2%) were identified...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28744762/mortality-after-primary-intracerebral-hemorrhage-in-relation-to-post-stroke-seizures
#11
Danny Claessens, Kim Bekelaar, Floris H B M Schreuder, Bianca T A de Greef, Mariëlle C G Vlooswijk, Julie Staals, Robert J van Oostenbrugge, Rob P W Rouhl
Seizures after intracerebral hemorrhage are repeatedly seen. Whether the development of seizures after intracerebral hemorrhage affects survival in the long term is unknown. This study aims to determine the relation between seizures (i.e., with and without anti-epileptic therapy) and long-term mortality risk in a large patient population with intracerebral hemorrhage. We retrospectively included patients with a non-traumatic ICH in all three hospitals in the South Limburg region in the Netherlands between January 1st 2004 and December 31st 2009, and we assessed all-cause mortality until March 14th 2016...
July 25, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28743048/the-ketogenic-diet-in-patients-with-myoclonic-status-in-non-progressive-encephalopathy
#12
Roberto Caraballo, Francesca Darra, Gabriela Reyes, Marisa Armeno, Araceli Cresta, Graciela Mestre, Bernardo Dalla Bernardina
Myoclonic status in non-progressive encephalopathy (MSNPE) is characterized by the recurrence of long-lasting atypical status epilepticus associated with attention impairment and continuous polymorphous jerks, mixed with other complex abnormal movements, in infants suffering from a non-progressive encephalopathy. The ketogenic diet (KD) has been used as an alternative to antiepileptic drugs (AEDs) for patients with refractory epileptic encephalopathies. PURPOSE: In this study we assess the efficacy and tolerability of the KD in patients with MSNPE...
July 11, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28742985/gabab-receptors-suppress-burst-firing-in-reticular-thalamic-neurons
#13
Stuart M Cain, Esperanza Garcia, Zeina Waheed, Karen L Jones, Trevor J Bushell, Terrance P Snutch
Burst-firing in thalamic neurons is known to play a key role in mediating thalamocortical (TC) oscillations that are associated with non-REM sleep and some types of epileptic seizure. Within the TC system the primary output of GABAergic neurons in the reticular thalamic nucleus (RTN) is thought to induce the de-inactivation of T-type calcium channels in thalamic relay (TR) neurons, promoting burst-firing drive to the cortex and the propagation of TC network activity. However, RTN neurons also project back onto other neurons within the RTN...
July 25, 2017: Channels
https://www.readbyqxmd.com/read/28734799/eeg-analysis-of-seizure-patterns-using-visibility-graphs-for-detection-of-generalized-seizures
#14
Lei Wang, Xi Long, Johan B A M Arends, Ronald M Aarts
BACKGROUND: The traditional EEG features in the time and frequency domain show limited seizure detection performance in the epileptic population with intellectual disability (ID). In addition, the influence of EEG seizure patterns on detection performance was less studied. NEW METHOD: A single-channel EEG signal can be mapped into visibility graphs (VGS), including basic visibility graph (VG), horizontal VG (HVG), and difference VG (DVG). These graphs were used to characterize different EEG seizure patterns...
July 19, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28734691/cerebellar-fits-in-the-2000s
#15
Domenico Serino, Davide Caputo, Lucia Fusco
Acute compression on the brainstem or acute increase in intracranial pressure may induce non-epileptic events varying from tonic seizures to axial rigidity with motor automatism, sometimes clearly characterized by decerebrate or decorticate paroxysmal posturing. The EEG correlate is characterized by diffuse asynchronous slow waves of variable amplitude. The mechanism behind such events, known as "cerebellar seizures or fits", is linked to cerebellar herniation and brainstem compression and is not of cortical origin...
July 19, 2017: Brain & Development
https://www.readbyqxmd.com/read/28732281/epileptic-seizure-detection-in-eegs-signals-based-on-the-weighted-visibility-graph-entropy
#16
Zeynab Mohammadpoory, Mahda Nasrolahzadeh, Javad Haddadnia
PURPOSE: Epileptic seizure detection has been a complex task for both researchers and specialist in that the assessment of epilepsy is difficult because, electroencephalogram (EEG) signals are chaotic and non-stationary. METHOD: This paper proposes a new method based on weighted visibility graph entropy (WVGE) to identify seizure from EEG signals. Single channel EEG signals are mapped onto the WVGs and WVGEs are calculated from these WVGs. Then some features are extracted of WVGEs and given to classifiers to investigate the performance of these features to classify the brain signals into three groups of normal (healthy), seizure free (interictal) and during a seizure (ictal) groups...
July 11, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28721936/assessing-quantitative-eeg-spectrograms-to-identify-non-epileptic-events
#17
Ajay Goenka, Alexis Boro, Elissa Yozawitz
To evaluate the sensitivity and specificity of quantitative EEG (QEEG) spectrograms in order to distinguish epileptic from non-epileptic events. Seventeen patients with paroxysmal non-epileptic events, captured during EEG monitoring, were retrospectively assessed using QEEG spectrograms. These patients were compared to a control group of 13 consecutive patients (ages 25-60 years) with epileptic seizures of similar semiology. Assessment of raw EEG was employed as the gold standard against which epileptic and non-epileptic events were validated...
July 19, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28719805/seizure-detection-from-eeg-signals-using-multivariate-empirical-mode-decomposition
#18
Asmat Zahra, Nadia Kanwal, Naveed Ur Rehman, Shoaib Ehsan, Klaus D McDonald-Maier
We present a data driven approach to classify ictal (epileptic seizure) and non-ictal EEG signals using the multivariate empirical mode decomposition (MEMD) algorithm. MEMD is a multivariate extension of empirical mode decomposition (EMD), which is an established method to perform the decomposition and time-frequency (T-F) analysis of non-stationary data sets. We select suitable feature sets based on the multiscale T-F representation of the EEG data via MEMD for the classification purposes. The classification is achieved using the artificial neural networks...
July 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28718773/mouse-epileptic-seizure-detection-with-multiple-eeg-features-and-simple-thresholding-technique
#19
Quang M Tieng, Ashwin Anbazhagan, Min Chen, David Charles Reutens
Epilepsy is a common neurological disorder characterized by recurrent, unprovoked seizures. The search for new treatments for seizures and epilepsy relies upon studies in animal models of epilepsy. To capture data on seizures, many applications require prolonged electroencephalography (EEG) with recordings that generate voluminous data. The desire for efficient evaluation of these recordings motivates the development of automated seizure detection algorithms. Approach: A new seizure detection method is proposed, based on multiple features and a simple thresholding technique...
July 18, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28711740/early-manifestations-of-epileptic-encephalopathy-brain-atrophy-and-elevation-of-serum-neuron-specific-enolase-in-a-boy-with-beta-propeller-protein-associated-neurodegeneration
#20
Kyoko Takano, Kazuya Goto, Mitsuo Motobayashi, Keiko Wakui, Rie Kawamura, Tomomi Yamaguchi, Yoshimitsu Fukushima, Tomoki Kosho
Mutations in WDR45 are responsible for beta-propeller protein-associated neurodegeneration (BPAN), which is an X-linked form of neurodegeneration with brain iron accumulation. BPAN mainly affects females and is characterized by seizures and developmental delay or intellectual disability until adolescence or early adulthood, followed by severe dystonia, parkinsonism, and progressive dementia. However, rare male patients have recently been reported with hemizygous germline mutations in WDR45 and severe clinical manifestations, such as epileptic encephalopathies...
July 12, 2017: European Journal of Medical Genetics
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