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期刊论文
GUSTATORY RESPONSES OF NEURONS IN THE PARABRACHIAL.NUCLEUS OF RATS
J XI’AN MED UNIV 2002, 14 (1): 15~19,-0001,():
Objective To investigate the gustatory neural response of the neurons to five basic taste stimuli in the.parabrachial nucleus (PBN). Methods Evoked responses from PBN taste neurons to tastants were recorded using standard.extracellular microelectrode technique. Re sults 46 taste neurons were recorded in PBN, and most of them were broadly. responsive. On the basis of their most effective taste stimuli, these taste neurons were classified into five types. Those are NaCl-, HCl-, quinine-, sucrose, and monosodium glutamate (MSG)-best neurons. Except for the quinine2best neurons, the responses of.each best-stimulus category to its best stimulus were signif icantly stronger than those of others (P<0.01). The results of correlation.analysis showed that the correlations between sucrose and each of the other 4 tastants were smaller than those among others. Conclusion.The results suggest that PBN taste neurons probably play an important role in discriminating for hedonic taste
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