Similarity Distractors Increase the Burden of Chinese Character Selection and Updating in Working Memory.

IF 3.1 3区 医学 Q2 NEUROSCIENCES Journal of Cognitive Neuroscience Pub Date : 2024-11-01 DOI:10.1162/jocn_a_02271
Hongli Li, Xin Zhao
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Abstract

Attentional mechanisms are the primary processes for performing working memory (WM) tasks and can prevent distractors from interfering with the content representations stored in WM. However, our understanding of the mechanisms by which attention affects WM remains limited. As such, we analyzed ERPs of the character n-back task to investigate Chinese character selection, updating, and maintenance in WM. In Experiment 1, we collected electroencephalography data from 27 participants aged 18-25 years to explore the influence of false-character interference and symbol interference on a neural activity in the character n-back task. The results suggest that RT was longer in the false-character interference condition. The N2pc and P300 amplitudes were smaller; however, the slow wave amplitude did not differ significantly. In Experiment 2, we used a single-symbol interference and a multiple-symbol interference to establish whether the number of interferences affected the neural activity in the character n-back task. Thirty participants (aged 19-25 years) took part in the experiment. The findings imply that a longer RT and a larger N2pc amplitude occurred in the multiple-symbol interference condition, but not in the P300 and slow wave conditions. Our findings indicate that distractors that are similar to characters may produce greater interference in character recognition and affect the subsequent updating, whereas the number of distractors may only interfere with early character selection, but not with updating and maintenance phases.

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相似性干扰物增加了工作记忆中汉字选择和更新的负担
注意机制是执行工作记忆(WM)任务的主要过程,可以防止分心者干扰存储在 WM 中的内容表征。然而,我们对注意力影响 WM 的机制的了解仍然有限。因此,我们分析了汉字 "n-back "任务的ERPs,以研究汉字在WM中的选择、更新和保持。在实验1中,我们收集了27名18-25岁参与者的脑电图数据,以探讨假字干扰和符号干扰对汉字n-back任务中神经活动的影响。结果表明,在假字符干扰条件下,RT 更长。N2pc和P300振幅较小,但慢波振幅没有显著差异。在实验 2 中,我们使用了单符号干扰和多符号干扰来确定干扰的数量是否会影响字符回溯任务中的神经活动。30 名参与者(19-25 岁)参加了实验。研究结果表明,在多符号干扰条件下,RT 时间更长,N2pc 振幅更大,而在 P300 和慢波条件下则不然。我们的研究结果表明,与字符相似的干扰物可能会对字符识别产生更大的干扰,并影响随后的更新,而干扰物的数量可能只会干扰早期的字符选择,而不会干扰更新和维持阶段。
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来源期刊
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience 医学-神经科学
CiteScore
5.30
自引率
3.10%
发文量
151
审稿时长
3-8 weeks
期刊介绍: Journal of Cognitive Neuroscience investigates brain–behavior interaction and promotes lively interchange among the mind sciences.
期刊最新文献
Attentional Refreshing in Working Memory and Its Interplay with Long-term Memory: A Behavioral and EEG Study. Experimental Manipulation of the Bilateral Posterior Parietal Cortex Strengthens Associative Memory in Healthy Participants: A Continuous Theta-burst Stimulation. Similarity Distractors Increase the Burden of Chinese Character Selection and Updating in Working Memory. Theta Transcranial Alternating Current Stimulation Is Not Effective in Improving Working Memory Performance. Movement Strategy Moderates the Effect of Spatially Congruent Cues on the Stability of Rhythmic Bimanual Finger Movements.
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