CLASSIFICATION OF CHEMORESPONSIVE TONGUE UNITS OF CAT GENICULATE GANGLION
CLASSIFICATION OF CHEMORESPONSIVE TONGUE UNITS OF CAT GENICULATE GANGLION
复制标题
DOI：
10.1016/0006-8993(73)90042-5
复制
发表时间：
1973-01-01
期刊：
影响因子：
2.9
通讯作者：
ALEV, N
中科院分区：
文献类型：
--
作者：
BOUDREAU, JC;ALEV, N
单单位记录取自麻醉猫膝状神经节的神经元。根据舌的自发活动测量和对化学和电刺激的反应，确定了三组化学反应舌单位。电刺激切除的菌状乳头的舌部单位可诱发出潜伏期分别为7-9毫秒、10-13毫秒和14毫秒或更长的尖峰电位，各组间几乎没有重叠。用不同的化学物质刺激完整的舌体。第一组单位优先排出某些物质，如柠檬酸和苹果酸，第二组单位优先排出半胱氨酸和脯氨酸。第三类单位受到较少物质的影响，尽管一些第三类单位属于对单核苷酸盐最敏感的单位。自发活动测量也被用来至少部分地对3组进行分类。3组单位分布于舌部不同重叠区域的菌状乳头。
Single unit recordings were taken from neurons in the geniculate ganglion of the anesthetized cat. Three groups of chemoresponsive tongue units were identified on the basis of spontaneous activity measures and response to chemical and electrical stimulation of the tongue. Electrical stimulation of the sites of excised fungiform papillae to which tongue units project elicited spikes with latencies of 7–9 msec from group I units, 10–13 msec from group II units and 14 msec or greater from group III units, with little overlap among the groups. The intact tongue was stimulated with different chemical substances. Group I units were preferentially discharged by certain substances such as citric and malic acid, group II units by cysteine and proline. Group III units were affected by fewer substances although some group III units were among those maximally sensitive to mononucleotide salts. Spontaneous activity measures were also utilized to classify the 3 groups, at least in part. The units in the 3 groups innervated fungiform papillae located in different but overlapping regions of the tongue.