Orienting, emotion, and memory: Phasic and tonic variation in heart rate predicts memory for emotional pictures in men
Orienting, emotion, and memory: Phasic and tonic variation in heart rate predicts memory for emotional pictures in men
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DOI：
10.1016/j.nlm.2008.08.001
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发表时间：
2008-11-01
影响因子：
2.7
通讯作者：
Monticelli, Roxanne M.
中科院分区：
文献类型：
--
作者：
Abercrombie, Heather C.;Chambers, Andrea S.;Monticelli, Roxanne M.
与心率加快（HR）相关的兴奋相关过程可以预测记忆增强，特别是对于情绪激动的刺激。此外，阶段性HR减速反映了刺激感知期间的“定向”和感觉感受性。我们假设，在观看图片期间，HR的强直性升高以及阶段性HR减速都与更深的编码和更好的后续刺激记忆相关。情绪化的图片更令人难忘，比中性图片引起更大的HR减速。因此，我们预测，与中性图片相比，心脏活动和记忆增强之间的关系在充满情感的图片中最为明显。我们测量了53名男性在观看不愉快，中性和愉快的图片时的HR，并在两天后测试了对图片的记忆。在所有三种情绪类别中，随后记住的照片比忘记的照片在观看个别照片时的相性心率减速更大。在整个编码时期，平均HR升高也预示着更好的记忆表现，但仅适用于情绪激动的图片。升高的平均HR和阶段性HR减速相关，例如具有更大的紧张性HR的个体在观看图片期间也表现出更大的HR减速，但仅限于情绪激动的图片。结果表明，紧张性海拔在HR与更大的定向和提高记忆的情绪唤起刺激。(C)2008年爱思唯尔公司All rights reserved.
Arousal-related processes associated with heightened heart rate (HR) predict memory enhancement, especially for emotionally arousing stimuli. In addition, phasic HR deceleration reflects "orienting" and sensory receptivity during perception of stimuli. We hypothesized that both tonic elevations in HR as well as phasic HR deceleration during viewing of pictures would be associated with deeper encoding and better subsequent memory for stimuli. Emotional pictures are more memorable and cause greater HR deceleration than neutral pictures. Thus, we predicted that the relations between cardiac activity and memory enhancement would be most pronounced for emotionally-laden compared to neutral pictures. We measured HR in 53 males during viewing of unpleasant, neutral, and pleasant pictures, and tested memory for the pictures two days later. Phasic HR deceleration during viewing of individual pictures was greater for subsequently remembered than forgotten pictures across all three emotion categories. Elevated mean HR across the entire encoding epoch also predicted better memory performance, but only for emotionally arousing pictures. Elevated mean HR and phasic HR deceleration were associated, such that individuals with greater tonic HR also showed greater HR decelerations during picture viewing, but only for emotionally arousing pictures. Results suggest that tonic elevations in HR are associated both with greater orienting and heightened memory for emotionally arousing stimuli. (C) 2008 Elsevier Inc. All rights reserved.