Department of Psychology, Wilfrid Laurier University, Waterloo, Ontario, N2L 3C5, Canada.
Cogn Affect Behav Neurosci. 2013 Mar;13(1):23-34. doi: 10.3758/s13415-012-0131-9.
The encoding of irrelevant stimuli into the memory store has previously been suggested as a mechanism of interference in working memory (e.g., Lange & Oberauer, Memory, 13, 333-339, 2005; Nairne, Memory & Cognition, 18, 251-269, 1990). Recently, Bancroft and Servos (Experimental Brain Research, 208, 529-532, 2011) used a tactile working memory task to provide experimental evidence that irrelevant stimuli were, in fact, encoded into working memory. In the present study, we replicated Bancroft and Servos's experimental findings using a biologically based computational model of prefrontal neurons, providing a neurocomputational model of overwriting in working memory. Furthermore, our modeling results show that inhibition acts to protect the contents of working memory, and they suggest a need for further experimental research into the capacity of vibrotactile working memory.
先前有研究表明，将无关刺激编码到记忆库中是工作记忆干扰的一种机制（例如，Lange & Oberauer，Memory，13，333-339，2005；Nairne，Memory & Cognition，18，251-269，1990）。最近，Bancroft 和 Servos（Experimental Brain Research，208，529-532，2011）使用触觉工作记忆任务提供了实验证据，证明无关刺激实际上被编码到了工作记忆中。在本研究中，我们使用基于生物的前额叶神经元计算模型复制了 Bancroft 和 Servos 的实验结果，为工作记忆中的覆盖提供了神经计算模型。此外，我们的建模结果表明，抑制作用可保护工作记忆的内容，并且它们表明需要进一步进行有关振动触觉工作记忆容量的实验研究。
