The effect of picture priming on event-related potentials of normal and disabled readers during a word recognition memory task.
The effect of picture priming on event-related potentials of normal and disabled readers during a word recognition memory task.
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在单词识别记忆任务中图片启动对正常和残疾读者事件相关电位的影响。
DOI：
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发表时间：
1990
影响因子：
2.2
通讯作者：
J. Miles
中科院分区：
文献类型：
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作者：
R. Stelmack;J. Miles
比较了正常和残疾读者在识别记忆任务中被启动词和未启动词诱发的视觉事件相关电位（erp）。启动词前有一个具有相同外延意义的图片，而未启动词前有一个具有非相关意义的图片。在455 ms （N400）时，正常阅读者对未启动词的负波表现出比残疾阅读者更大的振幅。对于残疾读者来说，这个N400在额中央位置明显，尽管比对照组小一些，但在外侧顶骨和枕部没有。用图片提示单词会降低正常和残疾读者的N400振幅。各组之间对图片的erp没有显著差异。获得的ERP结果模式似乎反映了这类残疾读者未能参与长期语义记忆，而他们的短期语言加工是完整的。
Normal and one subtype of disabled readers were compared in their visual event-related potentials (ERPs) that were elicited by primed and unprimed words during a recognition memory task. The primed words were preceded by a picture having the same denotative meaning, while unprimed words were preceded by a picture having a non-associated meaning. Normal readers exhibited consistently greater amplitude than the disabled readers to unprimed words with a negative wave at 455 ms (N400). For the disabled readers, this N400 was evident, though somewhat smaller, than for controls, at fronto-central placements, but absent at the lateral parietal and occipital sites. Priming a word with a picture reduced N400 amplitude for both the normal and disabled readers. There were no remarkable differences between groups in their ERPs to the pictures. The pattern of ERP results obtained seems to reflect a failure of this subtype of disabled readers to engage long-term, semantic memory, while their short-term linguistic processing is intact.