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Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology

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https://www.readbyqxmd.com/read/30415151/resting-frontal-eeg-asymmetry-in-adolescents-with-major-depression-impact-of-disease-state-and-comorbid-anxiety-disorder
#1
Lisa Feldmann, Charlotte E Piechaczek, Barbara D Grünewald, Verena Pehl, Jürgen Bartling, Michael Frey, Gerd Schulte-Körne, Ellen Greimel
OBJECTIVE: Greater relative right- than left-frontal cortical activity has been frequently found in adults with major depression (MD). As the few studies in adolescents with MD have been inconclusive, the aim of this study was to assess frontal alpha asymmetry (FAA) in an adolescent sample with MD whilst taking into account possible confounding variables such as disease state and comorbid anxiety disorder. METHODS: An 8-minute resting frontal EEG was assessed in 34 healthy controls (HCs), 16 adolescents with MD in remission without comorbid anxiety disorder (rMDa-), 22 adolescents with acute depression without comorbid anxiety disorder (MDa-), and 23 adolescents with acute depression and comorbid anxiety disorder (MDa+)...
October 30, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30419502/the-electrodiagnosis-of-guillain-barr%C3%A3-syndrome-subtypes-where-do-we-stand
#2
REVIEW
Antonino Uncini, Satoshi Kuwabara
It is controversial as to whether the electrophysiological Guillain-Barré syndrome (GBS) subtypes can be diagnosed on the basis of a single study and which criteria sets and cut-offs should be used. Serial electrophysiologic studies have shown that a significant number of patients changed electrodiagnostic subtype largely because of the recognition of reversible conduction failure as a possible evidence of axonal pathology. However, other reports concluded that electrodiagnosis can be made by a single study, the subtypes depending on the characteristic of the criteria set applied...
October 28, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30414527/computer-aided-detection-of-fasciculations-and-other-movements-in-muscle-with-ultrasound-development-and-clinical-application
#3
Kaj Gijsbertse, Max Bakker, André Sprengers, Juerd Wijntjes, Saskia Lassche, Nico Verdonschot, Chris L de Korte, Nens van Alfen
OBJECTIVE: To develop an automated algorithm for detecting fasciculations and other movements in muscle ultrasound videos. Fasciculation detection in muscle ultrasound is routinely performed online by observing the live videos. However, human observation limits the objective information gained. Automated detection of movement is expected to improved sensitivity and specificity and increase reliability. METHODS: We used 42 ultrasound videos from 11 neuromuscular patients for an iterative learning process between human observers and automated computer analysis, to identify muscle ultrasound movements...
October 27, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30390546/the-revised-cerebral-recovery-index-improves-predictions-of-neurological-outcome-after-cardiac-arrest
#4
Sunil B Nagaraj, Marleen C Tjepkema-Cloostermans, Barry J Ruijter, Jeannette Hofmeijer, Michel J A M van Putten
OBJECTIVE: Analysis of the electroencephalogram (EEG) background pattern helps predicting neurological outcome of comatose patients after cardiac arrest (CA). Visual analysis may not extract all discriminative information. We present predictive values of the revised Cerebral Recovery Index (rCRI), based on continuous extraction and combination of a large set of evolving quantitative EEG (qEEG) features and machine learning techniques. METHODS: We included 551 subsequent patients from a prospective cohort study on continuous EEG after CA in two hospitals...
October 27, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30388614/concentric-or-monopolar-electrode-for-jitter-determination-in-orbicularis-oculi
#5
Miguel Oliveira Santos, Michael Swash, Mamede de Carvalho
OBJECTIVES: To investigate if monopolar (MN) and concentric (CN) electrodes are equivalent for volitional contraction jitter estimation in orbicularis oculi (OO), and to study the effect of selecting a specific high-pass filter. METHODS: We studied neuromuscular jitter in OO on both sides in 100 consecutive patients with a clinical diagnosis of ocular myasthenia gravis (MG). We used either MN (50 patients) or CN (50 patients) electrodes in individual patients, according to a randomised protocol, with a 1kH high pass filter on one side and a 3kH filter on the other...
October 26, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30385110/applications-of-neuromuscular-ultrasound-in-amyotrophic-lateral-sclerosis
#6
EDITORIAL
Tze Chao Wee, Neil G Simon
No abstract text is available yet for this article.
October 26, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30393053/approaches-to-sleep-in-severely-brain-damaged-patients-further-comments-and-replies-to-kotchoubey-pavlov
#7
LETTER
M Wislowska, C Blume, M Angerer, T Wielek, M Schabus
No abstract text is available yet for this article.
October 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30385109/machine-learning-versus-human-expertise-the-case-of-sleep-stage-classification-in-disorders-of-consciousness-response-to-wislowska-et-al
#8
LETTER
Boris Kotchoubey, Yuri G Pavlov
No abstract text is available yet for this article.
October 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30384025/non-invasive-brain-stimulation-in-the-modulation-of-cerebral-blood-flow-after-stroke-a-systematic-review-of-transcranial-doppler-studies
#9
Pooja C Iyer, Sangeetha Madhavan
OBJECTIVE: Non-invasive brain stimulation (NIBS), such as repetitive TMS (rTMS) and transcranial direct current stimulation (tDCS), are promising neuromodulatory priming techniques to promote task-specific functional recovery after stroke. Despite promising results, clinical application of NIBS has been limited by high inter-individual variability. We propose that there is a possible influence of neuromodulation on cerebral blood flow (CBF), as neurons are spatially and temporally related to blood vessels...
October 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30384024/delirium-is-not-associated-with-altered-hub-flexibility-of-the-posterior-cingulate-cortex
#10
LETTER
S J T van Montfort, T Numan, E van Dellen, S Kyeong, L Douw, J J Kim
No abstract text is available yet for this article.
October 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30384023/heart-rate-variability-in-neonatal-patients-with-seizures
#11
Rosario Statello, Luca Carnevali, Davide Alinovi, Francesco Pisani, Andrea Sgoifo
OBJECTIVE: Seizures are frequently observed in neurological conditions affecting newborns. Since autonomic alterations are commonly associated with neonatal seizures (NS), we investigated the utility of heart rate variability (HRV) indexes of cardiac autonomic regulation for NS detection. METHODS: HRV analysis was conducted on ECG tracings recorded during video-EEG monitoring in newborns with NS and matched-controls. The effects of gestational age on HRV were also evaluated...
October 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30342252/passive-functional-mapping-of-receptive-language-areas-using-electrocorticographic-signals
#12
J R Swift, W G Coon, C Guger, P Brunner, M Bunch, T Lynch, B Frawley, A L Ritaccio, G Schalk
OBJECTIVE: To validate the use of passive functional mapping using electrocorticographic (ECoG) broadband gamma signals for identifying receptive language cortex. METHODS: We mapped language function in 23 patients using ECoG and using electrical cortical stimulation (ECS) in a subset of 15 subjects. RESULTS: The qualitative comparison between cortical sites identified by ECoG and ECS show a high concordance. A quantitative comparison indicates a high level of sensitivity (95%) and a lower level of specificity (59%)...
September 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30309740/indications-for-neuromuscular-ultrasound-expert-opinion-and-review-of-the-literature
#13
REVIEW
Francis O Walker, Michael S Cartwright, Katharine E Alter, Leo H Visser, Lisa D Hobson-Webb, Luca Padua, Jeffery A Strakowski, David C Preston, Andrea J Boon, Hubertus Axer, Nens van Alfen, Eman A Tawfik, Einar Wilder-Smith, Joon Shik Yoon, Byung-Jo Kim, Ari Breiner, Jeremy D P Bland, Alexander Grimm, Craig M Zaidman
Over the last two decades, dozens of applications have emerged for ultrasonography in neuromuscular disorders. We wanted to measure its impact on practice in laboratories where the technique is in frequent use. After identifying experts in neuromuscular ultrasound and electrodiagnosis, we assessed their use of ultrasonography for different indications and their expectations for its future evolution. We then identified the earliest papers to provide convincing evidence of the utility of ultrasound for particular indications and analyzed the relationship of their date of publication with expert usage...
September 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30293864/a-review-on-microelectrode-recording-selection-of-features-for-machine-learning-in-deep-brain-stimulation-surgery-for-parkinson-s-disease
#14
Kai Rui Wan, Tomasz Maszczyk, Angela An Qi See, Justin Dauwels, Nicolas Kon Kam King
OBJECTIVE: This study seeks to systematically review the selection of features and algorithms for machine learning and automation in deep brain stimulation surgery (DBS) for Parkinson's disease. This will assist in consolidating current knowledge and accuracy levels to allow greater understanding and research to be performed in automating this process, which could lead to improved clinical outcomes. METHODS: A systematic literature review search was conducted for all studies that utilized machine learning and DBS in Parkinson's disease...
September 25, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30347309/identifying-mild-moderate-parkinson-s-disease-using-whole-brain-functional-connectivity
#15
Yan Tang, Bailin Liu, Yuan Yang, Chang-Min Wang, Li Meng, Bei-Sha Tang, Ji-Feng Guo
OBJECTIVE: Our study aims to extract significant disorder-associated patterns from whole brain functional connectivity to distinguish mild-moderate Parkinson's disease (PD) patients from controls. METHODS: Resting-state fMRI data were measured from thirty-six PD individuals and thirty-five healthy controls. Multivariate pattern analysis was applied to investigate whole-brain functional connectivity patterns in individuals with 'mild-moderate' PD. Additionally, the relationship between the asymmetry of functional connectivity and the side of the initial symptoms was also analyzed...
September 24, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30292684/new-insights-into-the-pathophysiology-of-fasciculations-in-amyotrophic-lateral-sclerosis-an-ultrasound-study
#16
J F Vázquez-Costa, M Campins-Romeu, J J Martínez-Payá, J I Tembl, M E Del Baño-Aledo, J Ríos-Díaz, V Fornés-Ferrer, M J Chumillas, T Sevilla
OBJECTIVE: To describe the fasciculation pattern in ALS and to analyse its clinical and pathophysiological significance. METHODS: Ultrasound of 19 muscles was performed in 44 patients with a recent diagnosis (<90 days) of ALS. The number of fasciculations was recorded in each muscle and the muscle thickness and strength were additionally measured in limb muscles. A subgroup of patients were electromyographically assessed. RESULTS: US was performed in 835 muscles and EMG was available in 263 muscles...
September 24, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30366168/the-p300-component-decreases-in-a-bimodal-oddball-task-in-individuals-with-depression-an-event-related-potentials-study
#17
Cai Nan, Gaohua Wang, Huiling Wang, Xiaoping Wang, Zhongchun Liu, Ling Xiao, Hanping Bai, Shihao Wu
OBJECTIVE: In this study, we investigated auditory-visual stimulation-induced P300 and examined whether P300 was differentially modulated between individuals with clinical depression and healthy controls. We hypothesized that the P300 component would significantly differ between individuals with depression and healthy individuals Specifically, we predicted that the P300 component induced by the bimodal oddball task would be significantly different from that induced by the unimodal task...
September 22, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30219271/the-cerebellum-seems-not-a-little-brain-for-the-autonomic-nervous-system
#18
EDITORIAL
Ryuji Sakakibara
No abstract text is available yet for this article.
September 6, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30241978/effects-of-noise-and-age-on-the-infant-brainstem-response-to-speech
#19
Gabriella Musacchia, Silvia Ortiz-Mantilla, Cynthia P Roesler, Sree Rajendran, Julie Morgan-Byrne, April A Benasich
OBJECTIVE: Background noise makes hearing speech difficult for people of all ages. This difficulty can be exacerbated by co-occurring developmental deficits that often emerge in childhood. Sentence-type speech-in-noise (SIN) tests are available clinically but cannot be administered to very young individuals. Our objective was to examine the use of an electrophysiological test of SIN, suitable for infants, to track developmental trajectories. METHODS: Speech-evoked brainstem potentials were recorded from 30 typically-developing infants in quiet and +10 dB SNR background noise...
August 30, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30293034/the-study-of-exercise-tests-in-paroxysmal-kinesigenic-dyskinesia
#20
Hai-Yan Zhou, Fei-Xia Zhan, Wo-Tu Tian, Chao Zhang, Yan Wang, Ze-Yu Zhu, Xiao-Li Liu, Yang-Qi Xu, Xing-Hua Luan, Xiao-Jun Huang, Sheng-Di Chen, Li Cao
OBJECTIVE: To unravel if there was muscular ion channel dysfunction in paroxysmal kinesigenic dyskinesia (PKD) patients using the exercises tests (ET). METHODS: Sixty PKD patients including 28 PRRT2 mutations carriers were enrolled in this study, as well as 19 hypokalaemic periodic paralysis (HypoPP) patients as the positive controls and 45 healthy subjects as the negative controls. ET including long exercise test (LET) and short exercise test (SET) was performed in the corresponding subjects...
November 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
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