Detection, discrimination and sensation of visceral stimuli
Detection, discrimination and sensation of visceral stimuli
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DOI：
10.1016/0301-0511(95)05155-4
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发表时间：
1996-01-05
影响因子：
2.6
通讯作者：
Moltner, A
中科院分区：
文献类型：
--
作者：
Holzl, R;Erasmus, LP;Moltner, A
传入的内脏信号主要起到调节功能并产生模糊的、弥散的身体感觉，这在需要独特和局部的“内脏知觉”的实验范式中没有得到很好的反映。总结了一系列研究，将胃肠扩张刺激的行为辨别与与基本知觉操作（例如检测、定位、分级和识别）相关的主观感觉评级进行比较。结果表明，在受试者不知情的情况下检测胃肠刺激是可能的（没有可报告感觉的歧视）。该过程不依赖于低于足以主观感觉的刺激强度。然而，后者对于强度辨别（毕业）是必要的。与外感受（例如视觉）相反，刺激定位也需要有意识的主观感觉。这些处理上的差异不能用响应标准的简单差异来解释。推导了胃肠内感受的强度依赖性双过程模型，该模型不同于体感信息处理的标准模型。
Afferent visceral signals serve mostly regulatory functions and produce vague, diffuse body sensations, which are not well reflected in experimental paradigms requiring distinct and localized 'visceral perceptions'. A series of studies is summarized which compared behavioral discrimination of gastrointestinal distension stimuli with subjective sensation ratings in relation to basic perceptual operations such as detection, localization, graduation, and identification. Results showed that detection of gastrointestinal stimuli is possible without the subject's awareness (discrimination without reportable sensation). This process does not depend on stimulus intensity at volumes below those sufficient for subjective sensation. The latter is necessary, however, for intensity discrimination (graduation). Contrary to exteroception (e.g. vision), conscious subjective sensation is also required for stimulus localization. These differences in processing could not be explained by simple differences in response criteria. An intensity-dependent two-process model of gastrointestinal interoception is derived which differs from standard models of somatosensory information processing.