Modulation of the initial light reflex during affective picture viewing.
Modulation of the initial light reflex during affective picture viewing.
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DOI：
10.1111/psyp.12236
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发表时间：
2014-09
期刊：
影响因子：
3.7
通讯作者：
Lang PJ
中科院分区：
文献类型：
--
作者：
Henderson RR;Bradley MM;Lang PJ
瞳孔对刺激的最初反射性收缩——光反射——主要受亮度调节，但当参与者面临电击威胁时（例如“恐惧抑制光反射”）会减弱。本研究评估了在观看情绪性图片时光反射是否也会有类似的减弱。参与者观看了亮度匹配的色情、暴力和中性场景；作为额外的控制，还呈现了亮度相同的打乱版本。与观看中性场景相比，光反射可靠地受到享乐内容的调节，在观看不愉快以及愉快的图片时都有显著减弱。在打乱版本之间未发现光反射的差异。因此，初始光反射的调节不限于恐惧情境，并且在观看自然场景图片时也不表明亮度的差异。
An initial reflexive constriction of the pupil to stimulation – the light reflex – is primarily modulated by brightness, but is attenuated when participants are under threat of shock (e.g. "fear-inhibited light reflex").The present study assessed whether the light reflex is similarly attenuated when viewing emotional pictures. Participants viewed erotic, violent, and neutral scenes that were matched in brightness; as an additional control, scrambled versions identical in brightness were also presented. Compared to viewing neutral scenes, the light reflex was reliably modulated by hedonic content, with significant attenuation both when viewing unpleasant, as well as pleasant, pictures. No differences in the light reflex were found among scrambled versions. Modulation of the initial light reflex is therefore not confined to a context of fear, and also is not indicative of differences in brightness when viewing pictures of natural scenes.
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影响因子：
3
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Steinhauer, SR;Siegle, GJ;Pless, M
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3
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作者：
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