Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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Comparative Study Clinical Trial
Differences in excitability between median and superficial radial sensory axons.
The aim of this study was to investigate differences in excitability properties of human median and superficial radial sensory axons (e.g., axons innervating the glabrous and hairy skin in the hand). Previous studies have shown that excitability properties differ between motor and sensory axons, and even among sensory axons between median and sural sensory axons. ⋯ Biophysical properties are not identical in different human sensory axons, and therefore their responses to disease may differ.
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Persistent absence of the median nerve N20 response in patients suffering from postanoxic coma after a cardiac arrest is invariably associated with a poor outcome. Preservation of the N20 response, however, does not indicate a good recovery. We wish to improve our understanding on this issue. ⋯ Insight into the physiological processes underlying the generation of the SSEP and the EEG is relevant in clinical decision making and may guide novel monitoring strategies.
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Non-REM sleep is characterized by a physiologic oscillating pattern that exhibits different levels of arousal, coded as cyclic alternating pattern. The aim of this study was to analyze the development of cyclic alternating pattern parameters in a group of infants with apparent life-threatening events. ⋯ The enhanced mechanism of arousal might counteract life-threatening events and represent an important neurophysiologic distinction from future victims of sudden infant death syndrome who also experience similar events.
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The deep cervical extensors show structural changes in patients with neck pain however their activation has never been investigated in patients. This study is the first to present neurophysiological data from the deep semispinalis cervicis muscle in patients. ⋯ This finding suggests that exercises that target the deep semispinalis cervicis muscle may be relevant to include in the management of patients with neck pain.
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Editorial Comment
Bilateral N20 absence in post-anoxic coma: do you pay attention?