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https://www.readbyqxmd.com/read/29438820/intraoperative-hippocampal-electrocorticography-frequently-captures-electrographic-seizures-and-correlates-with-hippocampal-pathology
#1
Aashit K Shah, Darren Fuerst, Sandeep Mittal
OBJECTIVE: Relationship between electrographic seizures on hippocampal electrocorticography (IH-ECoG) and presence/type of hippocampal pathology remains unclear. METHODS: IH-ECoG was recorded for 10-20 min from the ventricular surface of the hippocampus following removal of the temporal neocortex in 40 consecutive patients. Correlation between intraoperative hippocampal seizures and preoperative MRI, hippocampal histopathology, and EEG from invasive monitoring was determined...
February 2, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29433523/a-clinical-approach-to-new-onset-psychosis-associated-with-immune-dysregulation-the-concept-of-autoimmune-psychosis
#2
Souhel Najjar, Johann Steiner, Amanda Najjar, Karl Bechter
Growing data point to the overlap between psychosis and pathological processes associated with immunological dysregulation as well as inflammation. Notably, the recent discovery of antibodies against synaptic and neuronal cell membrane proteins such as anti-N-methyl-D-aspartate receptor provides more direct evidence of the etiological connection between autoimmunity and subsequent hazard of psychosis. Here, we advocate the use of term "autoimmune psychosis," as this term suggests that autoimmune disorders can masquerade as drug-resistant primary psychosis, and this subtype of psychosis has anatomical and immunological footprints in the brain, despite the frequent absence of structural abnormalities on conventional brain MRI...
February 13, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29432237/hypoxic-ischemic-encephalopathy-and-other-neonatal-encephalopathies
#3
Hannah C Glass
PURPOSE OF REVIEW: Neonatal encephalopathy is the most common condition in neonates encountered by child neurologists. The etiology is most often global hypoxia-ischemia due to failure of cerebral perfusion to the fetus caused by uterine, placental, or umbilical cord compromise prior to or during delivery. Other etiologies of neonatal encephalopathy include ischemic stroke and intracranial hemorrhage, infection, developmental anomalies, and inborn errors of metabolism. RECENT FINDINGS: Therapeutic hypothermia is standard of care for the treatment of neonatal encephalopathy presumed to be caused by hypoxia-ischemia...
February 2018: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/29432218/electroencephalography-magnetoencephalography-and-source-localization-their-value-in-epilepsy
#4
Pierre Mégevand, Margitta Seeck
PURPOSE OF REVIEW: Source localization of cerebral activity using electroencephalography (EEG) or magnetoencephalography (MEG) can reveal noninvasively the generators of the abnormal signals recorded in epilepsy, such as interictal epileptic discharges (IEDs) and seizures. Here, we review recent progress showcasing the usefulness of these techniques in treating patients with drug-resistant epilepsy. RECENT FINDINGS: The source localization of IEDs by high-density EEG and MEG has now been proved in large patient cohorts to be accurate and clinically relevant, with positive and negative predictive values rivaling those of structural MRI...
February 9, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29429906/suicide-risk-temperament-traits-and-sleep-quality-in-patients-with-refractory-epilepsy
#5
Sayra Catalina Coral Castro, Gislaine Verginia Baroni, William Alves Martins, André Luis Fernandes Palmini, Luísa Weber Bisol
OBJECTIVES: The objective of the study was to access the suicide risk (SR) in patients with refractory epilepsy and its association with temperament and sleep quality. METHODS: A total of 50 consecutive patients referred for epilepsy surgery evaluation in the Porto Alegre Epilepsy Surgery Program were included. All patients had a detailed neurologic and psychiatric evaluation, including video-electroencephalogram (VEEG), high-resolution magnetic ressonance imaging (MRI), and neuropsychologic assessment...
February 8, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29429773/left-prefrontal-neuronavigated-electrode-localization-in-tdcs-10-20-eeg-system-versus-mri-guided-neuronavigation
#6
Sara De Witte, Debby Klooster, Josefien Dedoncker, Romain Duprat, Jonathan Remue, Chris Baeken
Transcranial direct current stimulation (tDCS) involves positioning two electrodes at specifically targeted locations on the human scalp. In neuropsychiatric research, the anode is often placed over the left dorsolateral prefrontal cortex (DLPFC), while the cathode is positioned over a contralateral cephalic region above the eye, referred-to as the supraorbital region. Although the 10-20 EEG system is frequently used to locate the DLPFC, due to inter-subject brain variability, this method may lack accuracy...
February 3, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29429257/-clinical-features-and-gene-analysis-of-tbc1d24-gene-mutation-related-early-onset-focal-myoclonic-epilepsy
#7
X R Leng, J Ye, Q L Zhou, X H Qi, Y H Dong, L P Zhang, Y F Zhang, Y P Wang, L P Li, Y C Lin
Objective: To investigate the clinical features and genetic characteristics of patients with TBC1D24 gene mutation related early-onset focal myoclonic epilepsy. Methods: Clinical data of 3 patients with TBC1D24 gene mutation related early-onset focal myoclonic epilepsy of Xuanwu Hospital from November 2016 to June 2017 was collected and analyzed.Candidate gene mutations were screened by second generation sequencing. Results: Among the 3 patients, 1 was male and 2 were females.Seizure onset age was 4 months, 3 years and 5 years after birth respectively...
February 6, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29426321/systemic-autoinflammation-with-intractable-epilepsy-managed-with-interleukin-1-blockade
#8
Allen D DeSena, Thuy Do, Grant S Schulert
BACKGROUND: Autoinflammatory disorders are distinguished by seemingly random episodes of systemic hyperinflammation, driven in particular by IL-1. Recent pre-clinical work has shown a key role for IL-1 in epilepsy in animal models, and therapies for autoinflammation including IL-1 blockade are proposed for refractory epilepsy. CASE PRESENTATION: Here, we report an adolescent female with signs of persistent systemic inflammation and epilepsy unresponsive to multiple anti-epileptic drugs (AED)...
February 9, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29414550/clinical-aspects-neuroimaging-and-electroencephalography-of-35-cases-of-hemiconvulsion-hemiplegia-syndrome
#9
Mohamed Albakaye, Halima Belaïdi, Fatiha Lahjouji, Leila Errguig, Callixte Kuate, Youssoufa Maiga, Seybou Hassane Diallo, Najib Kissani, Reda Ouazzani
INTRODUCTION: The hemiconvulsion-hemiplegia-epilepsy (HHE) syndrome is a rare consequence of febrile seizures during childhood. It is characterized by the presence of prolonged unilateral clonic seizures occurring during febrile illness in a child less than 4years of age. Then, a flaccid unilateral hemiplegia with variable duration occurs. OBJECTIVES: The objective of the study was to describe the clinical, electroencephalogram (EEG), and neuroimaging treatment and outcome of series of cases of HHE syndrome followed for 10years in our clinical neurophysiology department of the specialty hospital of Rabat...
January 26, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29414526/morphometric-analysis-on-t1-weighted-mri-complements-visual-mri-review-in-focal-cortical-dysplasia
#10
Lily C Wong-Kisiel, Diego F Tovar Quiroga, Daniel L Kenney-Jung, Robert J Witte, Alexandra Santana-Almansa, Gregory A Worrell, Jeffrey Britton, Benjamin H Brinkmann
OBJECTIVE: Focal cortical dysplasia (FCD) is a common pathology in focal drug resistant epilepsy (DRE). Voxel based morphometric MRI analysis has been proposed as an adjunct to visual detection of FCD, which remains challenging given the subtle radiographic appearance of FCD. This study evaluates the diagnostic value of morphometric analysis program (MAP) in focal DRE with pathology-confirmed FCD. METHODS: Automated morphometric analysis program analysis generated z-score maps derived from T1 images, referenced to healthy adult or pediatric controls for each of 39 cases with pathology-confirmed FCD...
January 26, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29411637/ictal-headache-insights-from-two-cases
#11
Arens Taga, Irene Florindo
Background We report the first literature description of ictal epileptic headaches closely mimicking glossopharyngeal neuralgia and short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing. Case 1 A 37-year-old man complained of short-lasting, electric-shock like headache, confined to the pharynx. During the episodes, he could not speak because he felt "words blocked at the throat". An EEG recorded epileptic discharges concomitant with headache; a brain MRI disclosed frontal polymicrogyria...
January 1, 2018: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/29403431/acquired-sleep-related-hypermotor-epilepsy-with-disrupted-white-matter-tracts-assessed-by-multishell-diffusion-magnetic-resonance-imaging
#12
Zahari N Tchopev, Ping-Hong Yeh, Greg W Morgan, Eric Meyer, Johanna M Wolf, John M Ollinger, Gerard P Riedy, Lisa C Young
Sleep-related hypermotor epilepsy (SHE) (previously frontal lobe epilepsy) is a rare seizure disorder commonly misdiagnosed or unrecognized, causing negative patient sequelae. While usually reported in familial studies, it is more commonly acquired. Diagnosis is a challenge due to its low incidence in comparison with the more common sleep disorders or psychogenic etiologies in the differential diagnosis. Diagnosis is scaled on degree of certainty based on described or clinically documented semiology, with video EEG as a helpful, but not necessary, adjunct...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29398181/utility-of-additional-dedicated-high-resolution-3t-mri-in-children-with-medically-refractory-focal-epilepsy
#13
Raheel Ahmed, Luc Rubinger, Cristina Go, James M Drake, James T Rutka, O Carter Snead, Elysa Widjaja
PURPOSE: In patients with medically refractory epilepsy and normal magnetic resonance imaging (MRI), high-resolution dedicated MRI may identify cryptic lesions. The aim of this study was to assess improvement in lesion detection and its impact on clinical management, using additional high-resolution dedicated 3T MRI in children with medically refractory epilepsy who had normal 3T epilepsy protocol MRI. MATERIALS AND METHODS: Children who had resective epilepsy surgery and suspected focal cortical dysplasia (FCD) or normal 3T epilepsy protocol MRI were included...
February 2, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29380485/neuromodulation-with-single-element-transcranial-focused-ultrasound-in-human-thalamus
#14
Wynn Legon, Leo Ai, Priya Bansal, Jerel K Mueller
Transcranial focused ultrasound (tFUS) has proven capable of stimulating cortical tissue in humans. tFUS confers high spatial resolutions with deep focal lengths and as such, has the potential to noninvasively modulate neural targets deep to the cortex in humans. We test the ability of single-element tFUS to noninvasively modulate unilateral thalamus in humans. Participants (N = 40) underwent either tFUS or sham neuromodulation targeted at the unilateral sensory thalamus that contains the ventro-posterior lateral (VPL) nucleus of thalamus...
January 29, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29378663/early-diagnosis-of-tuberous-sclerosis-complex-a-race-against-time-how-to-make-the-diagnosis-before-seizures
#15
Monika Słowińska, Sergiusz Jóźwiak, Angela Peron, Julita Borkowska, Dariusz Chmielewski, Krzysztof Sadowski, Elżbieta Jurkiewicz, Aglaia Vignoli, Francesca La Briola, Maria Paola Canevini, Katarzyna Kotulska-Jóźwiak
BACKGROUND: Tuberous sclerosis complex (TSC) is a genetic disorder with an incidence of 1:6000 live births and associated with the development of benign tumors in several organs. It is also characterized by high rates of neurological and neuropsychiatric abnormalities, including epilepsy affecting 70-90% of patients and being one of the major risk factors of intellectual disability. The first seizures in TSC patients appear usually between the 4th and the 6th months of life. Recent studies have shown the beneficial role of preventative antiepileptic treatment in TSC patients, with the possibility for improvement of cognitive outcome...
January 29, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29367441/spatial-variation-in-high-frequency-oscillation-rates-and-amplitudes-in-intracranial-eeg
#16
Hari Guragain, Jan Cimbalnik, Matt Stead, David M Groppe, Brent M Berry, Vaclav Kremen, Daniel Kenney-Jung, Jeffrey Britton, Gregory A Worrell, Benjamin H Brinkmann
OBJECTIVE: To assess the variation in baseline and seizure onset zone interictal high-frequency oscillation (HFO) rates and amplitudes across different anatomic brain regions in a large cohort of patients. METHODS: Seventy patients who had wide-bandwidth (5 kHz) intracranial EEG (iEEG) recordings during surgical evaluation for drug-resistant epilepsy between 2005 and 2014 who had high-resolution MRI and CT imaging were identified. Discrete HFOs were identified in 2-hour segments of high-quality interictal iEEG data with an automated detector...
January 24, 2018: Neurology
https://www.readbyqxmd.com/read/29364387/non-inflammatory-cerebrospinal-fluid-delays-the-diagnosis-and-start-of-immunotherapy-in-anti-nmdar-encephalitis
#17
Mariana Espinola-Nadurille, Paola Bautista-Gomez, Jose Flores, Veronica Rivas-Alonso, Rodrigo Perez-Esparza, Rodolfo Solís-Vivanco, Steven Vargas-Cañas
Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a form of autoimmune encephalopathy that presents with a wide variety of symptoms, including neuropsychiatric manifestations. The authors' aim for this study was to analyze the results of paraclinical studies of patients with a diagnosis of anti-NMDAR encephalitis and the association between symptom onset and diagnosis, and start of immunotherapy. Retrospective data of 29 patients with anti-NMDAR encephalitis were gathered and analyzed. Abnormal EEG was found in 27 patients (93...
January 2018: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/29360943/spike-related-haemodynamic-responses-overlap-with-high-frequency-oscillations-in-patients-with-focal-epilepsy
#18
Karina A González Otárula, Hui Ming Khoo, Nicolás von Ellenrieder, Jeffery A Hall, François Dubeau, Jean Gotman
Simultaneous scalp EEG/functional MRI measures non-invasively haemodynamic responses to interictal epileptic discharges, which are related to the epileptogenic zone. High frequency oscillations are also an excellent indicator of this zone, but are primarily recorded from intracerebral EEG. We studied the spatial overlap of these two important markers in patients with drug-resistant epilepsy to assess if their combination could help better define the extent of the epileptogenic zone. We included patients who underwent EEG-functional MRI and later intracerebral EEG...
January 18, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29360612/intracranial-electrodes-monitoring-improves-seizure-control-and-complication-outcomes-for-patients-with-temporal-lobe-epilepsy-a-retrospective-cohort-study
#19
Yan-En Lyu, Xiao-Fei Xu, Shuang Dai, Xiao-Bo Dong, Shao-Ping Shen, Yao Wang, Chong Liu
BACKGROUND: Anterior temporal lobectomy (ATL) is the standard surgical treatment for temporal lobe epilepsy (TLE), but patients may suffer from recurrent seizures post-surgery. Invasive electrical monitoring plays a critical role in precisely identifying the epileptic foci. This study aimed to evaluate and compare the benefits of long-term invasive electroencephalography (EEG) monitoring and two-stage surgery with the classical approach to examine their effect on post-surgical brain function and complications...
January 19, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29358107/the-oxymoron-of-image-guided-resection-in-3%C3%A2-t-mri-negative-extratemporal-epilepsy-technique-and-postoperative-results
#20
Evangelos Kogias, Petros Evangelou, Barbara Schmeiser, Peter C Reinacher, Dirk-Matthias Altenmüller
OBJECTIVE: We share our experience with extratemporal MRI-negative epilepsies that received "image-guided" resection with the use of neuronavigation after invasive presurgical video-EEG monitoring. We describe and discuss our technique of image generation, navigation system registration, and surgical resection. In addition, we evaluate seizure outcome with respect to the preoperatively planned versus achieved resection. PATIENTS AND METHODS: Seven patients with 3 T MRI-negative extratemporal epilepsy received navigation-guided resective surgery...
January 19, 2018: Clinical Neurology and Neurosurgery
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