Repetitive exposure: brain and reflex measures of emotion and attention.
Repetitive exposure: brain and reflex measures of emotion and attention.
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DOI：
10.1111/j.1469-8986.2010.01083.x
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发表时间：
2011-04
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：
Ferrari V;Bradley MM;Codispoti M;Lang PJ
在两个实验中研究了集中重复对情感图片观看过程中引发的晚期正电位调节的影响。尽管各项研究的重复次数有所不同（从 5 次到 30 次），但结果非常相似：与中性图片相比，观看情绪化图片时，后期的积极潜力继续增强。另一方面，大量重复确实会导致后期积极潜力的减少，这对于情感图片来说最为明显。惊吓探针 P3 幅度通常随着重复而增加，表明对重复图片的注意力分配减少。然而，尽管有大量的重复，眨眼反射仍然受到享乐效价的调节。综上所述，数据表明，观看图片期间后期正电位的幅度反映了动机意义和注意力分配。
Effects of massed repetition on the modulation of the late positive potential elicited during affective picture viewing were investigated in two experiments. Despite a difference in the number of repetitions across studies (from 5 to 30), results were quite similar: the late positive potential continued to be enhanced when viewing emotional, compared to neutral, pictures. On the other hand, massed repetition did prompt a reduction in the late positive potential that was most pronounced for emotional pictures. Startle probe P3 amplitude generally increased with repetition, suggesting diminished attention allocation to repeated pictures. The blink reflex, however, continued to be modulated by hedonic valence, despite massive massed repetition. Taken together, the data suggest that the amplitude of the late positive potential during picture viewing reflects both motivational significance and attention allocation.
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