Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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The present study evaluated ethnic differences in sensory, pain responses, and the exteroceptive suppression reflex (ES) in the trigeminal region. ⋯ The findings of this study have direct implications for studies evaluating different types of orofacial pain conditions and trigeminal reflexes.
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To establish a methodology for recording corticobulbar motor evoked potentials (CoMEPs) from vocal muscles after transcranial electrical stimulation (TES) and direct cortical stimulation (DCS). ⋯ This method shows the ability to continuously monitor the functional integrity of corticobulbar pathways, vagal nucleus and laryngeal nerves.
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A realistic simulation exploiting real cortical sources identified from non-invasive extra-cranial recordings in healthy subjects has been considered in order to select the most robust procedure for choosing the correct order of multivariate autoregressive (MVAR) models. Different signal-to-noise ratios filter settings and sampling rates were also tested on the estimate of functional connectivity among the network nodes, in simulated and real cases. ⋯ Correct MVAR model order choice and band filtering play an important role for the correct network connectivity estimate.
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Comparative Study
Do children with ADHD and/or PDD-NOS differ in reactivity of alpha/theta ERD/ERS to manipulations of cognitive load and stimulus relevance?
We examined whether the method of event-related (de-)synchronization (ERD/ERS) revealed differential effects of selective attention and working memory load in children (8-11 years) with pervasive developmental disorder - not otherwise specified (PDD-NOS) or attention-deficit/hyperactivity disorder (ADHD). ⋯ Alpha and theta ERD/ERS are sensitive to manipulations of task load, relevance and target/nontarget, but supply no additional information on possible group differences in comparison to the more frequently used method of event-related potentials.
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To assess the effect of local excitation of nociceptors at different locations of the upper trapezius muscle on the spatial distribution of upper trapezius electromyographic (EMG) amplitude during sustained contraction. ⋯ Pain-induced changes in the spatial distribution of muscle activity may induce overload of specific muscle regions in the long term.