冲击的威胁增加了在短期维护视觉信息期间的分心器易感性
Abigail Casalvera1, Madeline Goodwin2, Kevin G Lynch3
1Center for Neuromodulation in Depression and Stress, Department of Psychiatry, University of Pennsylvania, Philadelphia, PA, USA.
Social cognitive and affective neuroscience
|May 29, 2024
概括
焦虑会影响注意力控制,阻碍过分心的信息的能力,尤其是在受到威胁的情况下. 这项研究表明,威胁对注意力任务的表现产生了负面影响.
科学领域:
- 认知神经科学 认知神经科学
- 心理学 心理学 心理学
- 神经成像是一种神经成像.
背景情况:
- 焦虑与高兴度有关,这可能会影响注意力控制.
- 了解威胁如何影响抑制干扰因素的能力,对于认知功能至关重要.
研究的目的:
- 为了研究威胁对视觉短期记忆 (VSTM) 任务中的分心抑制的影响.
- 检查分心器负载增加是否会在威胁条件下加剧性能缺陷.
主要方法:
- 使用VSTM任务进行了两项实验,目标和分散器负载各不相同.
- 实验1使用惊吓反应来测量威胁引起的焦虑.
- 实验2使用BOLD成像来评估在威胁和安全时期的大脑活动.
主要成果:
- 威胁显著增加了惊吓反应,验证了威胁的操纵.
- 在受到威胁的情况下,任务准确性降低了,特别是当分心器负载很高时.
- 观察到与威胁相关的围膜皮层活动的差异.
结论:
- 威胁损害了过分散注意力的信息的能力,增加了对分散注意力的敏感性.
- 这些发现表明,在受到威胁时,头顶皮层的过度兴奋可能会调解这种注意力缺陷.
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