Y S Yan

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Excitatory and inhibitory responses recorded extracellularly in neurons at various levels of the central nervous system induced by electrical noxious stimulation of peripheral nerves were frequently reported in studies on the mechanisms of acupuncture analgesia. However, the correlation between the responses and excitation of distinct afferent fibers was(More)
There were different opinions about whether ketamine has an antagonistic effect on electroacupuncture (EA) analgesia. The aim of this paper was to investigate the effect of ketamine on EA. The rats were divided into three groups: 4 mg/kg, 20 mg/kg of ketamine in doses, and normal saline groups. Ketamine was injected peritoneally in dosage of 4 mg/kg and 20(More)
We have found that after intraperitoneal injecting atropine the analgesic effect of both stimulating Sm I cortex and acupuncture were decreased. It suggests that acetylcholine (ACh) may be involved in the corticofugal modulation of pain. In order to elucidate this idea the effects of stimulating Sm I cortex on tail flick latency (TFL) after ventrical(More)
The present study was designed to investigate the relationship between the precruciate cortex (PreCtx) and the ventral lateral posterior nucleus (VPL) of the thalamus in the mechanisms of acupuncture analgesia. Neuronal responses in the nucleus VPL to electrical noxious stimulation of the superficial peroneal nerve were extracellularly recorded. Lidocaine(More)
In this paper effect of EA on nociceptive responses after topical application of bicuculline on the cortical somatosensory area of rats was investigated. Changqiang and Yaoshu point were selected for electroacupuncture. The results showed that the effect of EA on tail flick latency elicited by radiant heat and vocalization threshold elicited by electrical(More)
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