...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Psychology. General >Selective Influence of Working Memory Load on Exceptionally Slow Reaction Times
【24h】

Selective Influence of Working Memory Load on Exceptionally Slow Reaction Times

机译：工作记忆负荷对异常慢的反应时间的选择性影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The rate of exceptionally slow reaction times (RTs), described by the long tail of the RT distribution, was found,to be amplified in a variety of special populations with cognitive deficits (e.g., early-stage Alzheimer's disease; attention-deficit/hyperactivity disorder, low intelligence, elderly). Previous individual differences studies found high correlations between working memory (WM) and parameters that characterize the magnitude of the long-RT tail. However, the causal direction remains unknown. In 3 choice-reaction task experiments, we examined this relationship by directly manipulating WM availability. In Experiment 1, the stimulus-response rules were either arbitrary (WM demanding) or nonarbitrary. In Experiment 2, the arbitrary rules were either novel (demanding) or practiced. In Experiment 3, WM was loaded with either declarative (stimulus-stimulus) or procedural (stimulus-response) arbitrary rules. Using an ex-Gaussian model fitting, we found across all experiments that WM demands uniquely influenced the τ parameter, mostly responsible for the long-RT distribution tail. Evidence accumulation modeling of the choice process indicated that WM load had little influence on the decision process itself and primarily affected the duration of an exponentially distributed nondecision component, assumed to reflect the process of rule retrieval. Theoretical interpretations and implications are discussed.
机译：发现由RT分布的长尾描述的异常缓慢的反应时间（RTs）的速率在具有认知缺陷的各种特殊人群中得到了放大（例如，早期阿尔茨海默氏病;注意力缺陷/多动症障碍，智力低下，老年人）。先前的个体差异研究发现，工作记忆（WM）与表征长RT尾巴幅度的参数之间具有高度相关性。但是，因果关系仍然未知。在3个选择反应任务实验中，我们通过直接操纵WM可用性来检查这种关系。在实验1中，刺激响应规则是任意的（WM要求）或非任意的。在实验2中，任意规则要么新颖（要求），要么实践。在实验3中，WM加载了声明性（刺激－刺激）或程序性（刺激－响应）任意规则。使用前高斯模型拟合，我们在所有实验中发现WM要求唯一地影响τ参数，这主要是造成RT分布较长的原因。选择过程的证据累积模型表明，WM负载对决策过程本身影响很小，并且主要影响指数分布的非决策组件的持续时间（假定可以反映规则检索的过程）。讨论了理论解释和启示。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号