GENERALIZATION BETWEEN CORTICALLY AND PERIPHERALLY APPLIED STIMULI ELICITING CONDITIONED REFLEXES
GENERALIZATION BETWEEN CORTICALLY AND PERIPHERALLY APPLIED STIMULI ELICITING CONDITIONED REFLEXES
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DOI：
10.1152/jn.1959.22.4.428
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发表时间：
1959-01-01
影响因子：
2.5
通讯作者：
RUTLEDGE, LT
中科院分区：
文献类型：
--
作者：
DOTY, RW;RUTLEDGE, LT
对80只猫进行了训练，使其前腿屈曲到至少15次美国回避(休克)的标准，每天呈现25次条件刺激(CS)。刺激对不同CS的泛化程度是通过比较每个个体对CS的初始通道和第二个测试通道的表现来判断的。泛化几乎均匀地存在于调性和光性CS之间，或同源皮质区域之间，其直流电刺激起CS作用。概括也很容易发生：(1)当最初的CS是通过光或听觉感受器呈现并被测试为直接皮质兴奋时；(2)当最初作为CS被兴奋的皮质区域在测试之前通过刺激同位皮质点而被切除时；以及(3)当在使用刺激1个中外胚回作为CS并测试对另一个半球的同位刺激之前已经切断了海马连合和后3/4的穹隆体部时。
Eighty cats were trained to flex a foreleg to a criterion of at least 15 avoidances of the US (shock) for 25 daily presentations of a conditional stimulus (CS). The degree of stimulus generalization to a different CS was judged by comparing in each individual the performance to an initial modality of CS with that for a second, test modality. Generalization was almost uniformly present between tonal and photic CS or between homotopic cortical areas whose direct electrical excitation served as CS. Generalization also occurred readily: (1) when initial CS was presented via photic or auditory receptors and tested to direct cortical excitation; (2) when the cortical area initially excited as a CS was extirpated prior to testing by stimulation of a homotopic cortical point; and (3) when the hippocampal commissure and posterior 3/4 of the corpus callosum had been sectioned prior to using excitation of 1 middle ectosylvian gyrus as CS and testing to homotopic stimulation of the other hemisphere.