The Korean Journal of Physiology
- Volume 28 Issue 1
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- Pages.99-103
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- 1994
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- 0300-4015(pISSN)
Facilitation of Afferent Sensory Transmission in the Cuneate Nucleus of Rat during Locomotor Movement
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Shin, Hyung-Cheul
(Dept. of Physiology, College of Medicine, Hallym University) ;
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Park, Hyoung-Jin
(Dept. of Physiology, College of Medicine, Hallym University) ;
- Jin, Byung-Kwan (Lab of Molecular Neurobiology, The Burke Rehabilitation Center, Cornell University) ;
- Chapin, John K. (Dept. of Physiology & Biophysics, Hahnemann University)
- Published : 1994.06.30
Abstract
Single neuronal activities were recorded in the cuneate nucleus of awake rats during rest and running behavior. Movement-induced changes in somatic sensory transmission were tested by generating post-stimulus time histograms of these neurons' responses to stimulation through eleetrodes chronically implanted under the skin of the forepaw, during control resting behavior and during two standardized speeds of locomotor movement: slow (1.0 steps/s), fast (2.0 steps/s). The magnitudes of firing during these responses were measured and normalized as percentage increases over background firing. The averaged evoked unit responses were facilitated by