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首页> 外文期刊>The European Journal of Neuroscience >Steady-state VEP responses to uncomfortable stimuli
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Steady-state VEP responses to uncomfortable stimuli

机译：稳态VEP对不舒服刺激的反应

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摘要

Periodic stimuli, such as op-art, can evoke a range of aversive sensations included in the term visual discomfort. Illusory motion effects are elicited by fixational eye movements, but the cortex might also contribute to effects of discomfort. To investigate this possibility, steady-state visually evoked responses (SSVEPs) to contrast-matched op-art-based stimuli were measured at the same time as discomfort judgements. On average, discomfort reduced with increasing spatial frequency of the pattern. In contrast, the peak amplitude of the SSVEP response was around the midrange spatial frequencies. Like the discomfort judgements, SSVEP responses to the highest spatial frequencies were lowest amplitude, but the relationship breaks down between discomfort and SSVEP for the lower spatial frequency stimuli. This was not explicable by gross eye movements as measured using the facial electrodes. There was a weak relationship between the peak SSVEP responses and discomfort judgements for some stimuli, suggesting that discomfort can be explained in part by electrophysiological responses measured at the level of the cortex. However, there is a breakdown of this relationship in the case of lower spatial frequency stimuli, which remains unexplained.
机译：定期刺激，例如op-art，可以唤起一系列包括在视觉不适中的一系列厌氧感。通过固定眼球运动引发了虚幻运动效应，但皮质也可能有助于对不适的影响。为了研究这种可能性，与不适的判断同时，测量稳态视觉诱发的反应（SSVEPS）对匹配匹配的适应性刺激的刺激。平均而言，随着模式的空间频率的增加，不适降低。相反，SSVEP响应的峰值幅度围绕中端空间频率。与不适的判断一样，对最高空间频率的SSVEP响应是最低幅度，但是对于较低空间频率刺激的不适与SSVEP之间的关系突破。由于使用面部电极测量，这并不通过粗略的眼睛运动来解释。对于一些刺激的峰值SSVEP反应和不适判断之间存在薄弱的关系，表明可以通过在皮质水平下测量的电生理学反应部分解释不适。然而，在较低的空间频率刺激的情况下，存在这种关系的崩溃，这仍然是未解释的。

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