STIMULUS INTENSITY CONTROL AND CORTICAL EVOKED RESPONSE
STIMULUS INTENSITY CONTROL AND CORTICAL EVOKED RESPONSE
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DOI：
10.1097/00006842-196801000-00002
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发表时间：
1968-01-01
影响因子：
3.3
通讯作者：
SILVERMAN, J
中科院分区：
文献类型：
--
作者：
BUCHSBAUM, M;SILVERMAN, J
对正常人和非偏执型精神分裂症受试者进行了4种强度闪光的皮层诱发电位和动觉图形后效知觉任务(KFA)的测试。以前的研究已经表明，个体对刺激强度的感知差异可以从KFA的表现中推断出来。在这项研究中，假设KFA分数显示有降低强烈刺激感知强度的趋势的个体在皮质诱发反应过程中表现出类似的反应倾向。在正常组和精神病组中，诱发反应潜伏期和波幅测量与KFA值均存在显著的相关性。在诱发反应参数上也发现了性别差异，男性表现出比女性更陡峭的强度-反应功能。此外，性别被发现是诱发反应测量和KFA值之间关系的一个重要调节变量。这些发现被解释为关于中枢神经系统中刺激强度控制机制的理论构建。
: Cortical evoked potentials to light flashes of 4 intensities and performances on a kinesthetic figural after-effects perceptual task (KFA) were obtained from normal and nonparanoid schizophrenic subjects. In previous studies it had been shown that individual differences in perception of stimulus intensity could be inferred from KFA performance. In this study, it was hypothesized that individuals whose KFA scores indicated a tendency to reduce the perceived intensity of strong stimulation would show a comparable response tendency on a cortical evoked response procedure. Significant correlations were found between evoked response latency and amplitude measures and KFA values in both normal and psychiatric groups. Sex differences in evoked response parameters were also found, males showing a steeper intensity-response function than females. Further, sex was found to be an important moderator variable of the relationship between evoked response measures and KFA values. These findings were interpreted in terms of a theoretical construct regarding a stimulus intensity control mechanism in the central nervous system.