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Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)

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https://www.readbyqxmd.com/read/30229671/a-meta-analysis-of-the-effect-of-multisession-transcranial-direct-current-stimulation-on-cognition-in-dementia-and-mild-cognitive-impairment
#1
Takuma Inagawa, Zui Narita, Norio Sugawara, Kazushi Maruo, Andrew Stickley, Yuma Yokoi, Tomiki Sumiyoshi
There have been increasing efforts to investigate the effects of neuromodulation techniques, such as transcranial direct current stimulation (tDCS), on cognitive impairment in dementia and related conditions. In this systematic review and meta-analysis, we assessed the efficacy of multisession anodal tDCS compared with sham stimulation for improving global cognition and specific cognitive domains in both Alzheimer's disease and mild cognitive impairment. Eight articles meeting the criteria for inclusion in the meta-analysis were selected...
September 19, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30198328/correlations-between-cognitive-aspects-and-quantitative-eeg-in-adults-with-epilepsy
#2
Gloria Maria Tedrus, Leandro M Negreiros, Raquel S Ballarim, Tamires A Marques, Lineu Correa Fonseca
INTRODUCTION: Cognitive impairment frequently occurs in adult patients with epilepsy (PWE), but its pathophysiological basis is not well known. This study assessed cognition and its correlations with quantitative EEG coherence (QEEG) of patients with epilepsy. METHOD: Eighty PWE seen consecutively in the clinic and 40 normal subjects (NC) were assessed by neurological evaluation, Mini Mental State Examination, immediate and delayed recall of 10 simple figures, phonemic verbal fluency (FAS), category fluency test (VF animals), clock drawing, and QEEG...
September 10, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30182751/resting-eeg-measures-of-brain-arousal-in-a-multisite-study-of-major-depression
#3
Christine Ulke, Craig E Tenke, Jürgen Kayser, Christian Sander, Daniel Böttger, Lidia Y X Wong, Jorge E Alvarenga, Maurizio Fava, Patrick J McGrath, Patricia J Deldin, Melvin G Mcinnis, Madhukar H Trivedi, Myrna M Weissman, Diego A Pizzagalli, Ulrich Hegerl, Gerard E Bruder
Several studies have found upregulated brain arousal during 15-minute EEG recordings at rest in depressed patients. However, studies based on shorter EEG recording intervals are lacking. Here we aimed to compare measures of brain arousal obtained from 2-minute EEGs at rest under eyes-closed condition in depressed patients and healthy controls in a multisite project-Establishing Moderators and Biosignatures of Antidepressant Response for Clinical Care (EMBARC). We expected that depressed patients would show stable and elevated brain arousal relative to controls...
September 5, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30175598/evoked-potentials-investigations-of-deficit-versus-nondeficit-schizophrenia-eeg-meg-preliminary-data
#4
Nash N Boutros, Klevest Gjini, Frank Wang, Susan M Bowyer
Heterogeneity of schizophrenia is a major obstacle toward understanding the disorder. One likely subtype is the deficit syndrome (DS) where patients suffer from predominantly negative symptoms. This study investigated the evoked responses and the evoked magnetic fields to identify the neurophysiological deviations associated with the DS. Ten subjects were recruited for each group (Control, DS, and Nondeficit schizophrenia [NDS]). Subjects underwent magnetoencephalography (MEG) and electroencephalography (EEG) testing while listening to an oddball paradigm to generate the P300 as well as a paired click paradigm to generate the mid-latency auditory-evoked responses (MLAER) in a sensory gating paradigm...
September 3, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30117335/mesial-temporal-sclerosis-in-scn1a-related-epilepsy-two-long-term-eeg-case-studies
#5
Anna M Tiefes, Till Hartlieb, Moritz Tacke, Celina von Stülpnagel-Steinbeis, Line H G Larsen, Quin Hao, Hans Atli Dahl, Bernd A Neubauer, Lucia Gerstl, Manfred Kudernatsch, Gerhard J Kluger, Ingo Borggraefe
Patients with temporal lobe epilepsy (TLE) due to mesial temporal sclerosis (MTS) are eligible candidates for resective epilepsy surgery. We report on 2 male patients aged 4 years with suspected TLE due to MTS who were referred for presurgical evaluation. Both patients came to medical attention within the first year of life suffering from febrile status epileptici and subsequent unprovoked seizures. The following years, moderate developmental delay was present. High-resolution magnetic resonance imaging confirmed hippocampal sclerosis...
August 17, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30099908/senile-onset-subacute-sclerosing-panencephalitis-presenting-with-peculiar-findings
#6
Ayse Deniz Elmali, Ruken Simsekoglu, Erdi Sahin, Canan Duman Ilki, Ozge Uygun, Oguzhan Coban, Candan Gurses
Subacute sclerosing panencephalitis (SSPE) is a well-known childhood disease; however, the adult onset of SSPE cases are also widely recognized where the oldest case reported is 52 years old. We report a 61-year-old woman patient presenting with atypical clinical and EEG features, diagnosed with SSPE. Measles and SSPE have decreased dramatically owing to worldwide immunization programs; however, there are still reasons to consider SSPE in differential diagnosis even in patients presenting with atypical clinical findings and older ages...
August 13, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30084262/reactivating-the-dormant-motor-cortex-after-spinal-cord-injury-with-eeg-neurofeedback-a-case-study-with-a-chronic-complete-c4-patient
#7
Eduardo López-Larraz, Carlos Escolano, Luis Montesano, Javier Minguez
Chronic spinal cord injury (SCI) patients present poor motor cortex activation during movement attempts. The reactivation of this brain region can be beneficial for them, for instance, allowing them to use brain-machine interfaces for motor rehabilitation or restoration. These brain-machine interfacess generally use electroencephalography (EEG) to measure the cortical activation during the attempts of movement, quantifying it as the event-related desynchronization (ERD) of the alpha/mu rhythm. Based on previous evidence showing that higher tonic EEG alpha power is associated with higher ERD, we hypothesized that artificially increasing the alpha power over the motor cortex of these patients could enhance their ERD (ie, motor cortical activation) during movement attempts...
August 7, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30073861/preliminary-evidence-for-limbic-frontal-hyperexcitability-in-psychogenic-nonepileptic-seizure-patients
#8
Nash Boutros, Seung Suk Kang, Utku Uysal, Mian Urfy, Zack Thomas, Susan M Bowyer, Kathleen Gustafson
OBJECTIVES: The goal of the current pilot project was to probe the resting-state magnetoencephalography (MEG) in individuals with psychogenic nonepileptic seizures (PNES) and ascertain if there is evidence for frontal temporal cortical hyperexcitability, as evidenced by increased focal coherence in these regions. METHODS: Six patients with PNES and without any evidence of epilepsy were included. Nine healthy control (HC) subjects (age matched as a group) were also included...
August 3, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30056746/p300-and-heart-rate-variability-recorded-simultaneously-in-meditation
#9
Shirley Telles, Deepeshwar Singh, K V Naveen, Subramanya Pailoor, Nilkamal Singh, Shivangi Pathak
Sympathetic activation is required for attention. Separate studies have shown that meditation ( a) improves attention and ( b) reduces sympathetic activity. The present study assessed attention with the P300 and sympathetic activity with heart rate variability (HRV). Forty-seven male subjects (group mean age ± SD, 21.6 ± 3.4 years) were assessed in 4 mental states: ( a) random thinking, ( b) nonmeditative focusing, ( c) meditative focusing, and ( d) defocused meditation. These were recorded on 4 consecutive days...
July 30, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/30045636/acute-eeg-patterns-associated-with-transient-ischemic-attack
#10
Jeffrey M Rogers, Jacob Bechara, Sandy Middleton, Stuart J Johnstone
BACKGROUND: Transient ischemic attack (TIA) is characterized by stroke-like neurologic signs and symptoms in the absence of demonstrable structural neuropathology. There is no test for TIA, with classification often reliant on subjective, retrospective report. Functional brain measures such as the electroencephalogram (EEG) may be helpful in objectively detecting and describing the pathophysiology of TIA, but this has not been adequately examined. METHODS: EEG was obtained from a single electrode over the left frontal lobe during 3-minute resting-state and auditory oddball conditions administered to consecutive patients within 72 hours of admission to the acute stroke ward of a tertiary hospital...
July 25, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29984606/early-intervention-with-adrenocorticotropin-for-acute-encephalopathy-associated-epileptic-spasms-report-of-two-cases
#11
Kousuke Yonemoto, Yuko Ichimiya, Masafumi Sanefuji, Noriyuki Kaku, Ayumi Sakata, Rieko Baba, Fumiya Yamashita, Satoshi Akamine, Michiko Torio, Yoshito Ishizaki, Yoshihiko Maehara, Yasunari Sakai, Shouichi Ohga
PURPOSE: Acute encephalopathy with biphasic seizures and reduced diffusion (AESD) is a leading cause of childhood-onset encephalopathy in Japan. Children with AESD frequently develop intractable epilepsy, whereas their treatment options remain to be determined. METHOD: We present 2 unrelated girls, who developed AESD at 25 months (case 1) and 12 months of age (case 2). Both cases underwent intensive cares from the first day of illness, whereas severe neurological impairments were left on discharge...
July 1, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29984595/high-frequencies-in-qeeg-are-related-to-the-level-of-insight-in-patients-with-schizophrenia
#12
Mehmet Kemal Arikan, Baris Metin, Sinem Zeynep Metin, Emine Elif Tülay, Nevzat Tarhan
Lack of insight is a neurocognitive problem commonly encountered in patients with psychotic disorders that negatively affects treatment compliance and prognosis. Measurement of insight is based on self-report scales, which are limited due to subjectivity. This study aimed to determine the correlation between resting state beta and gamma power in 23 patients with schizophrenia and insight. It was observed that as beta and gamma power measured via qualitative electroencephalography (qEEG) increased the level of insight decreased...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29224411/change-in-quantitative-eeg-theta-cordance-as-a-potential-predictor-of-repetitive-transcranial-magnetic-stimulation-clinical-outcome-in-major-depressive-disorder
#13
Aimee M Hunter, Thien X Nghiem, Ian A Cook, David E Krantz, Michael J Minzenberg, Andrew F Leuchter
Repetitive transcranial magnetic stimulation (rTMS) has demonstrated efficacy in major depressive disorder (MDD), although clinical outcome is variable. Change in the resting-state quantitative electroencephalogram (qEEG), particularly in theta cordance early in the course of treatment, has been linked to antidepressant medication outcomes but has not been examined extensively in clinical rTMS. This study examined change in theta cordance over the first week of clinical rTMS and sought to identify a biomarker that would predict outcome at the end of 6 weeks of treatment...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29214865/automatic-seizure-detection-based-on-morphological-features-using-one-dimensional-local-binary-pattern-on-long-term-eeg
#14
P P Muhammed Shanir, Kashif Ahmad Khan, Yusuf Uzzaman Khan, Omar Farooq, Hojjat Adeli
Epileptic neurological disorder of the brain is widely diagnosed using the electroencephalography (EEG) technique. EEG signals are nonstationary in nature and show abnormal neural activity during the ictal period. Seizures can be identified by analyzing and obtaining features of EEG signal that can detect these abnormal activities. The present work proposes a novel morphological feature extraction technique based on the local binary pattern (LBP) operator. LBP provides a unique decimal value to a sample point by weighing the binary outcomes after thresholding the neighboring samples with the present sample point...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29186977/ictal-rhythmic-alpha-sinusoidal-waves-in-3-cases-of-anti-nmdar-encephalitis
#15
Ailiang Miao, Xiaoshan Wang
Previous studies have shown that extreme delta brush and high beta/delta power ratio on electroencephalogram are suggestive of anti- N-methyl-d-aspartate receptor (anti-NMDAR) encephalitis. Here we report 3 anti-NMDAR encephalitis patients with ictal rhythmic alpha sinusoidal waves in temporal regions, which suggested electrographic seizures in anti-NMDAR encephalitis and indicated potential for seizure occurrence in the future. Rhythmic alpha sinusoidal waves may be an electrographic feature and helpful in distinguishing anti-NMDAR encephalitis...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29161906/association-between-pathology-and-electroencephalographic-activity-in-parkinson-s-disease
#16
John N Caviness, Thomas G Beach, Joseph G Hentz, Holly A Shill, Erika D Driver-Dunckley, Charles H Adler
INTRODUCTION: The key mechanisms that connect Parkinson's disease pathology with dementia are unclear. We tested the hypothesis that the quantitative spectral electroencephalographic measure, delta bandpower, correlates with Lewy type synucleinopathy on pathological examination in Parkinson's disease. As a corollary hypothesis, we analyzed whether there would be delta bandpower electroencephalographic differences between Parkinson's disease dementia cases with and without pathological criteria for Alzheimer's disease...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29161899/how-long-should-routine-eeg-be-recorded-to-get-relevant-information
#17
Hannah Doudoux, Kristina Skaare, Thomas Geay, Philippe Kahane, Jean L Bosson, Cécile Sabourdy, Laurent Vercueil
OBJECTIVE: The optimal duration of routine EEG (rEEG) has not been determined on a clinical basis. This study aims to determine the time required to obtain relevant information during rEEG with respect to the clinical request. METHOD: All rEEGs performed over 3 months in unselected patients older than 14 years in an academic hospital were analyzed retrospectively. The latency required to obtain relevant information was determined for each rEEG by 2 independent readers blinded to the clinical data...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29161897/status-epilepticus-and-multiple-sclerosis-a-case-presentation-and-literature-review
#18
Murat Mert Atmaca, Candan Gurses
PURPOSE: To search the literature for the frequency, pathogenesis, prognosis, and treatment of seizures and status epilepticus (SE) in patients with multiple sclerosis (MS). METHODS: We report 2 patients with MS who presented with SE and review the literature. RESULTS: Seizures and SE episodes worsened during MS relapses in the first patient. SE episodes and MS relapses significantly decreased after initiation of natalizumab treatment but she still had seizures and was taking 4 antiepileptic drugs (AEDs)...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29161891/the-significance-of-impulsive-error-in-children-with-adhd
#19
Yu-Chi Liao, Nai-Wen Guo, Shin-Jaw Chen, Hsing-Fang Tsai, Jhih-Hong Fang, Jia-Jin Chen, Bei-Yi Su
A deficit of inhibition ability is a neuropsychological problem in children with attention deficit hyperactivity disorder (ADHD). We investigated whether in children who made impulsive error (IE), less error-related negativity (ERN) would correlate with poorer executive attention functions (EAFs). Ninety children (49 with ADHD and 41 without ADHD) were investigated by a 4-minute simple reaction time task and simultaneous electroencephalogram. When they made IE, the ERN in response-locked event-related potential (ERP) was defined as error awareness...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/28974100/neuronal-dysexcitability-may-be-a-biomarker-of-migraine-a-visual-evoked-potential-study
#20
Jayantee Kalita, Ravi Uniyal, Usha K Misra, Sanjeev K Bhoi
We report neuronal sensitization and impaired habituation in migraine using pattern reversal visual evoked potential (PRVEP) and correlate these with clinical characteristics of migraine. Sixty-five migraineurs and 30 healthy controls were included. A detailed clinical examination was done and migraine characteristics, including migraine trigger, photophobia, phonophobia, and allodynia were noted. Consecutive 5 blocks of PRVEP were recorded averaging 100 epochs at 3 Hz stimuli. The amplitude of N75 and P100 were measured...
September 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
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