@article {3261,
	title = {Circadian rhythm in rat H-reflex.},
	journal = {Brain research},
	volume = {648},
	year = {1994},
	month = {06/1994},
	pages = {167{\textendash}170},
	abstract = {We measured soleus H-reflex in the Sprague-Dawley rat as a function of time of day. H-reflex amplitude displayed a marked diurnal variation, even though background EMG and M-response amplitude were stable through the day. The H-reflex was largest in the late morning and smallest around midnight. Thus, its rhythm was opposite in phase to the circadian rhythm found in the primate H-reflex. This rhythm is a potentially confounding factor in studies of motor function. Furthermore, its existence implies that the CNS activity underlying a specific motor performance varies with time of day.},
	keywords = {circadian rhythm, electromyogram, H-Reflex, rat, soleus},
	issn = {0006-8993},
	doi = {10.1016/0006-8993(94)91918-6},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/7922520},
	author = {Xiang Yang Chen and Jonathan Wolpaw}
}
