Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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To evaluate electroencephalography (EEG) changes in dengue virus infection and correlate these with clinical, laboratory and CT/MRI changes. ⋯ Dengue virus infection results in non-specific EEG slowing in 55% patients, which may be due to dengue virus encephalitis per se or associated confounding variables such as seizure, metabolic encephalopathy, or structural brain lesion.
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Comparative Study
Correlation and cluster analysis of sensory, pain, and reflex thresholds to various stimulus modalities in symptom-free subjects.
In order to evaluate the possible relation between the psychophysical response and a motor reflex, sensory and pain thresholds to various stimuli were analyzed in combination with the occurrence threshold of the late masseteric exteroceptive suppression (ES2) period. ⋯ Combined examination of sensory, pain, and ES2 thresholds might provide complementary information on the pathophysiology underlying orofacial pain.
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Comparative Study Clinical Trial
Monitoring of scoliosis surgery with epidurally recorded motor evoked potentials (D wave) revealed false results.
To elucidate the mechanism behind D wave amplitude changes after surgical correction of scoliosis. ⋯ This study provides new insight into the methodology of D wave monitoring as well as strong evidence of a high incidence of false positive results using D wave monitoring during surgical correction of scoliosis.
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Comparative Study
Increase in high frequency EEG activity explains the poor performance of EEG spectral entropy monitor during S-ketamine anesthesia.
To study the effects of S-ketamine on the EEG and to investigate whether spectral entropy of the EEG can be used to assess the depth of hypnosis during S-ketamine anesthesia. ⋯ The entropy monitor is not adequate for monitoring S-ketamine-induced hypnosis.
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Using evoked potentials, this study investigated effects of deep propofol sedation, and effects of recovery from unconsciousness, on the processing of auditory information with stimuli suited to elicit a physical MMN, and a (music-syntactic) ERAN. ⋯ Results inform about effects of sedative drugs on auditory and attention-related mechanisms. The findings are important because these mechanisms are prerequisites for auditory awareness, auditory learning and memory, as well as language perception during anesthesia.