Working Memory Performance for Differentially Conditioned Stimuli.
Working Memory Performance for Differentially Conditioned Stimuli.
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DOI：
10.3389/fpsyg.2021.811233
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发表时间：
2021
影响因子：
3.8
通讯作者：
Larson CL
中科院分区：
文献类型：
--
作者：
Ward RT;Lotfi S;Stout DM;Mattson S;Lee HJ;Larson CL
先前的研究表明，与中性刺激相比，与威胁相关的刺激在工作记忆中的储存程度更高。然而，大多数研究都集中在具有物理显着威胁属性的刺激（例如，愤怒的面孔），未能解释通过差异厌恶性条件反射获得与威胁相关关联的“中性”刺激如何影响工作记忆。当前的研究检查了相对于新颖的非关联（即 N）刺激，差异条件下的安全（即 CS-）和威胁（即 CS+）刺激如何存储在工作记忆中。参与者 (n = 69) 完成了差异性恐惧调节任务，随后完成了变化检测任务，该任务包括跨两个负载（小、大）的三个条件（CS+、CS-、N）。结果显示，在差异厌恶调节任务中，个体成功学会区分 CS+ 和 CS- 条件。我们的工作记忆结果表明负载操纵效果成功，但 CS+、CS– 或 N 条件之间的准确性、响应时间 (RT) 或工作记忆容量的 Pashler K 测量值没有统计学上的显着差异。然而，我们观察到与 CS- 条件相比，CS+ 条件下的 RT 差异分数显着降低，表明 CS+ 和 N 条件下与 CS- 和 N 条件之间的 RT 差异更大。这些发现表明，与之前与安全或厌恶结果无关的新刺激相比，差异条件刺激对工作记忆的行为结果几乎没有影响，至少在健康人群中是这样。
Previous work suggests that threat-related stimuli are stored to a greater degree in working memory compared to neutral stimuli. However, most of this research has focused on stimuli with physically salient threat attributes (e.g., angry faces), failing to account for how a “neutral” stimulus that has acquired threat-related associations through differential aversive conditioning influences working memory. The current study examined how differentially conditioned safe (i.e., CS–) and threat (i.e., CS+) stimuli are stored in working memory relative to a novel, non-associated (i.e., N) stimuli. Participants (n = 69) completed a differential fear conditioning task followed by a change detection task consisting of three conditions (CS+, CS–, N) across two loads (small, large). Results revealed individuals successfully learned to distinguishing CS+ from CS– conditions during the differential aversive conditioning task. Our working memory outcomes indicated successful load manipulation effects, but no statistically significant differences in accuracy, response time (RT), or Pashler’s K measures of working memory capacity between CS+, CS–, or N conditions. However, we observed significantly reduced RT difference scores for the CS+ compared to CS– condition, indicating greater RT differences between the CS+ and N condition vs. the CS– and N condition. These findings suggest that differentially conditioned stimuli have little impact on behavioral outcomes of working memory compared to novel stimuli that had not been associated with previous safe of aversive outcomes, at least in healthy populations.
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影响因子：
7.2
作者：
Cowan N
通讯作者：
Cowan N
影响因子：
3.5
作者：
Eng, HY;Chen, DY;Jiang, YH
通讯作者：
Jiang, YH
DOI：
10.3758/s13415-012-0100-3
发表时间：
2012-09
期刊：
Cognitive, affective & behavioral neuroscience
影响因子：
--
作者：
Basten U;Stelzel C;Fiebach CJ
通讯作者：
Fiebach CJ
影响因子：
5.4
作者：
Feuerstahler, Leah M.;Luck, Steven J.;Waller, Niels G.
通讯作者：
Waller, Niels G.
使用贝叶斯来最大程度地利用不重要的结果。
影响因子：
3.8
作者：
Dienes Z
通讯作者：
Dienes Z