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Rhythmic digastric activity in the naloxone-treated decerebrate rabbit pup
A J Thexton1, J D McGarrick, T W Stone
1Department of Physiology, UMDS (Guy's Campus), London, U.K.
Neuroscience Letters
|November 11, 1988
Abstract:
In decerebrate rabbit pups (greater than 1 and less than 7 days postnatal), exhibiting a digastric reflex with a latency of 20-25 ms, the administration of naloxone was followed by depression of the 25 ms latency reflex and the appearance of rhythmic EMG activity (10-18 Hz) with a latency of 45-90 ms. Such a frequency is not consistent with the normal rhythms of feeding but may relate to tooth grinding behaviour. In contrast, spontaneous rhythmic activity occurring after naloxone had a lower frequency, consistent with the normal rhythm of feeding.