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首页> 外文期刊>International journal of psychophysiology: official journal of the International Organization of Psychophysiology >Chemosensory perception and event-related potentials in self-reported chemical hypersensitivity.
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Chemosensory perception and event-related potentials in self-reported chemical hypersensitivity.

机译：自我报告的化学超敏反应中的化学感觉知觉和事件相关电位。

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摘要

Anormal chemosensory perception has been identified as a possible mechanism underlying odor intolerance, but research in this domain has yet been rather limited. The main objective of the present study was to investigate total perceived intensity, unpleasantness, sensory irritation, and cortical activity assessed with chemosensory event-related potentials (ERPs) for three concentrations of pyridine ranging from predominantly olfactory to trigeminal in activation. Results from 19 individuals with self-reported chemical hypersensitivity and 19 controls with self-reported normal chemical sensitivity show that the hypersensitive group, compared to controls, rated the pyridine stimuli to be more intense and unpleasant, and that these group differences increased with pyridine concentration. Sensory irritation was also the perceptual dimension found to correlate strongest with score on the chemical sensitivity scale. However, no group differences were found in ERP amplitudes or latencies. These findings suggest that self-reported chemical hypersensitivity (1) can be associated with anormal chemosensory perception, (2) may be more closely related to trigeminal function than to olfaction, and (3) has a neural basis at a higher cortical level than that captured by chemosensory ERPs.
机译：正常的化学感觉知觉被认为是不耐气味的潜在机制，但是在这一领域的研究还很有限。本研究的主要目的是研究三种主要浓度的吡啶从化学嗅觉事件相关电位（ERPs）评估的总感知强度，不适感，感觉刺激性和皮层活动，这些浓度范围主要从嗅觉到激活的三叉神经。来自19个自我报告的化学超敏反应的个体和19个自我报告的正常化学敏感性的对照组的结果表明，与对照组相比，超敏组对吡啶刺激的评分更高，更不愉快，并且这些组的差异随吡啶浓度的增加而增加。感觉刺激也是在化学敏感性量表上与评分最高相关的感知维度。但是，在ERP幅度或延迟中未发现组差异。这些发现表明，自我报告的化学超敏反应（1）可能与正常的化学感官知觉有关;（2）与三叉神经功能的关系可能比与嗅觉的关系更紧密;以及（3）皮质水平较高的神经基础由化学感应ERP捕获。

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