NDLI: 32. The changes of somatosensory-evoked potentials preceded by contralateral median nerve stimulation in sleep

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32. The changes of somatosensory-evoked potentials preceded by contralateral median nerve stimulation in sleep

Content Provider	Semantic Scholar
Author	Shimizu, Hiroshi Yamada, Thoru Abe, Tatsuya Matsumoto, Shuji Kimura, Jun
Copyright Year	2008
Abstract	The aim of this study was to determine if there is any interhemispheric interaction in somatosensory-evoked potentials (SEPs) by using condition (SI) and test (SII) paired stimulus paradigm. This was examined during both wakefulness and sleep. The SI stimuli were delivered to right median nerve (MN) and SII stimuli were to left MN, with interstimulus interval (ISI) of 0, 5, 10, 20, 50, 100 and 200 ms. Three stimulus modalities (SI, SII, SI + SII) were delivered in cyclic fashion throughout the awake and asleep states. SEPs were obtained as of off-line after grouping the responses according to the wakefulness and sleep stages of II, III/IV and REM. Control SEP showed decreased amplitude of parietal N32–P40 and P40–N60 and increased amplitude of frontal N19–P22 in non-REM sleep as compared to those of wakefulness. The latencies of all peaks (except for P14) were prolonged with greater degree in later components. All these changes returned close to wakefulness during REM sleep. The test response also showed parallel changes with the control responses throughout all ISIs both in wakefulness and sleep. It is concluded that there is no significant inter-hemispheric interaction in sensory input between two hemispheres during both wakefulness and sleep.
File Format	PDF HTM / HTML
DOI	10.1016/j.clinph.2008.01.057
Volume Number	119
Alternate Webpage(s)	https://api.elsevier.com/content/article/pii/S1388245708000849
Alternate Webpage(s)	https://www.sciencedirect.com/science/article/pii/S1388245708000849?dgcid=api_sd_search-api-endpoint
Journal	Clinical Neurophysiology
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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