Practice-Related Improvement in Working Memory is Modulated by Changes in Processing External Interference
Practice-Related Improvement in Working Memory is Modulated by Changes in Processing External Interference
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DOI：
10.1152/jn.00179.2009
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发表时间：
2009-09-01
影响因子：
2.5
通讯作者：
Gazzaley, Adam
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文献类型：
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作者：
Berry, Anne S.;Zanto, Theodore P.;Gazzaley, Adam
贝瑞·AS，Zanto TP，Rutman AM，Clapp WC，Gazzaley A.与练习相关的工作记忆改善受到加工外部干扰的变化的调节。神经生理学杂志102：1779-1789,2009。2009年7月8日首次出版；DOI：10.1152/jn.00179.2009。工作记忆(WM)的性能会受到外部干扰的影响。因此，通过练习更有效地处理中间刺激可能会提高工作记忆成绩。为了探索练习对干扰对工作记忆成绩的影响所起的作用，我们研究了年轻人在执行三种运动方向延迟再认任务时的脑电记录。一个任务没有干扰，而两个任务在记忆维持期间引入了不同类型的干扰：分心干扰和干扰。干扰因素应该被忽略，而干扰因素需要根据任务指令进行注意，以进行知觉辨别。我们表明，这两种类型的干扰都会扰乱WM的性能，但通过快速学习，干扰诱导的干扰在单个实验会话中会减弱。WM准确度和反应时间的改善与视觉皮质早期神经干扰处理措施(即P1抑制和N1增强)的变化相关。这些结果表明，加工干扰中与练习相关的变化对工作记忆成绩产生了积极的影响，强调了过滤无关信息的重要性，以及学习过程中知觉、注意和工作记忆神经过程之间存在的动态交互作用。
Berry AS, Zanto TP, Rutman AM, Clapp WC, Gazzaley A. Practice-related improvement in working memory is modulated by changes in processing external interference. J Neurophysiol 102: 1779-1789, 2009. First published July 8, 2009; doi:10.1152/jn.00179.2009. Working memory (WM) performance is impaired by the presence of external interference. Accordingly, more efficient processing of intervening stimuli with practice may lead to enhanced WM performance. To explore the role of practice on the impact that interference has on WM performance, we studied young adults with electroencephalographic ( EEG) recordings as they performed three motion-direction, delayed-recognition tasks. One task was presented without interference, whereas two tasks introduced different types of interference during the interval of memory maintenance: distractors and interruptors. Distractors were to be ignored, whereas interruptors demanded attention based on task instructions for a perceptual discrimination. We show that WM performance was disrupted by both types of interference, but interference-induced disruption abated across a single experimental session through rapid learning. WM accuracy and response time improved in a manner that was correlated with changes in early neural measures of interference processing in visual cortex (i.e., P1 suppression and N1 enhancement). These results suggest practice-related changes in processing interference exert a positive influence on WM performance, highlighting the importance of filtering irrelevant information and the dynamic interactions that exist between neural processes of perception, attention, and WM during learning.