Level of Orthographic Knowledge Helps to Reveal Automatic Predictions in Visual Word Processing.

Level of Orthographic Knowledge Helps to Reveal Automatic Predictions in Visual Word Processing.
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DOI:
10.3389/fnins.2021.809574
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发表时间:
2021
影响因子:
4.3
通讯作者:
Zhao J
Zhao J
中科院分区:
医学2区
文献类型:
--
作者:
Huang Z;Yang S;Xue L;Yang H;Lv Y;Zhao J

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大脑产生关于视觉单词形式的预测,以支持有效的阅读。“互动帐户”表明,在视觉文字处理的预测可以是战略或自动(非战略)。策略预测经常在操纵任务需求的研究中得到证实,然而,很少有研究调查自动预测。正字法知识在个体之间差异很大,它为揭示自动预测提供了一个独特的机会。本研究将参与者按正字法知识水平分组,并在非语言色彩匹配任务中记录EEG。在正字法知识低的受试者中,对伪字的视觉词选择性N170反应比对真实的字的反应强得多,但在正字法知识高的受试者中则不然。关于预测编码的先前工作已经证明N170是预测误差的良好索引,即,预测和视觉输入之间的不匹配。目前的研究结果提供了明确的证据,自动预测调制的视觉文字处理的早期阶段。
The brain generates predictions about visual word forms to support efficient reading. The “interactive account” suggests that the predictions in visual word processing can be strategic or automatic (non-strategic). Strategic predictions are frequently demonstrated in studies that manipulated task demands, however, few studies have investigated automatic predictions. Orthographic knowledge varies greatly among individuals and it offers a unique opportunity in revealing automatic predictions. The present study grouped the participants by level of orthographic knowledge and recorded EEGs in a non-linguistic color matching task. The visual word-selective N170 response was much stronger to pseudo than to real characters in participants with low orthographic knowledge, but not in those with high orthographic knowledge. Previous work on predictive coding has demonstrated that N170 is a good index for prediction errors, i.e., the mismatches between predictions and visual inputs. The present findings provide unambiguous evidence that automatic predictions modulate the early stage of visual word processing.
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