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《Acta Physiological Sinica》 1983-02
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GASTROELECTRICAL ACTIVITIES OF CONSCIOUS CATS RELATED TO FEEDING

JIANG LIAN-HAI AND SHEN EH(Shanghai Institute of Physiology,Academia Sinica)  
The gastroelectrical activities were recorded before,during and after feedingin conscious cats.The effects of intraventricular administration of beta-adrenergicantagonist propranolol and general anaesthesia(Nembutal ip)on gastroelectricalactivity were observed.During hunger state a characteristic high amplitudemultiphasic slow wave superimposed with fast activity could be seen in the gastro-electrogram.During eating,slow waves were suppressed and low amplitude fastactivities dominated.Half an hour after feeding,sinusoid slow waves of 4-5cycles/minute with superimposed bursts of spikes occurred.The sinusoid wavesand spikes increased in amplitudes as time went by.After intraventricular in-jection of propranolol(150μg)to the satiated animals the characteristic hungerwaves reappeared.Intraperitoneal injection of nembutal to the hunger animals,sinusoid slow waves and the characteristic hunger waves were both suppressed.The gastroelectrograms in conscious animals are thus closely related to thefunctional states of the central nervous system.
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