Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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Multicenter Study Observational Study
Generalized periodic discharges and 'triphasic waves': A blinded evaluation of inter-rater agreement and clinical significance.
Generalized periodic discharges (GPDs) are associated with nonconvulsive seizures. Triphasic waves (TWs), a subtype of GPDs, have been described in relation to metabolic encephalopathy and not felt to be associated with seizures. We sought to establish the consistency of use of this descriptive term and its association with seizures. ⋯ Conventional association of 'triphasic waves' with specific clinical conditions may lead to inaccurate EEG interpretation.
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Randomized Controlled Trial Multicenter Study
Interrater variability of EEG interpretation in comatose cardiac arrest patients.
EEG is widely used to predict outcome in comatose cardiac arrest patients, but its value has been limited by lack of a uniform classification. We used the EEG terminology proposed by the American Clinical Neurophysiology Society (ACNS) to assess interrater variability in a cohort of cardiac arrest patients included in the Target Temperature Management trial. The main objective was to evaluate if malignant EEG-patterns could reliably be identified. ⋯ The establishment of strict criteria with high transferability between interpreters will increase the usefulness of routine EEG to assess neurological prognosis after cardiac arrest.
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Multicenter Study
Intraoperative monitoring of carotid endarterectomy by transcranial motor evoked potential: a multicenter study of 600 patients.
This study was to investigate the utility of motor evoked potential monitoring elicited by transcranial electrical stimulation (tcMEP) during CEA in addition to the established median nerve somatosensory evoked potentials (mSSEPs). ⋯ TcMEPs seem to improve postoperative outcome, especially in case of a timely correction of cerebral ischemia.
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Randomized Controlled Trial Multicenter Study Comparative Study
Assessment of a scalp EEG-based automated seizure detection system.
The purpose of this study was to evaluate and validate an offline, automated scalp EEG-based seizure detection system and to compare its performance to commercially available seizure detection software. ⋯ With comparable detection sensitivity, an improved false detection rate makes the automated seizure detection software more useful in clinical practice.
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Multicenter Study Comparative Study
Reduced fronto-cortical brain connectivity during NREM sleep in Asperger syndrome: an EEG spectral and phase coherence study.
To investigate whether sleep macrostructure and EEG power spectral density and coherence during NREM sleep are different in Asperger syndrome (AS) compared to typically developing children and adolescents. ⋯ Quantitative analysis of the EEG during NREM sleep supports the hypothesis of frontal dysfunction in AS.