Asymetric Event-Related Potential Priming Effects Between English Letters and American Sign Language Fingerspelling Fonts.
Asymetric Event-Related Potential Priming Effects Between English Letters and American Sign Language Fingerspelling Fonts.
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DOI：
10.1162/nol_a_00104
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发表时间：
2023
影响因子：
3.2
通讯作者：
Holcomb, Phillip J. J.
中科院分区：
文献类型：
--
作者：
Sehyr, Zed Sevcikova;Midgley, Katherine J. J.;Emmorey, Karen;Holcomb, Phillip J. J.
字母识别在阅读中扮演着重要的角色，并且遵循不同的处理阶段，从早期的视觉特征检测到抽象字母表征的访问。聋人ASL-英语双语者的正字法有两种形式：英语字母和手指拼写。然而，神经生物学性质的指法表示，以及两个拼写之间的关系，仍然是未被探索。我们研究了时间动态的单个英文字母和美国手语指法字体处理在一个未掩蔽的启动范式与中央提出的目标为200毫秒之前，100毫秒的启动。当参与者进行探测任务时，记录事件相关脑电位。实验一考察了聋人和听力正常人的英语字母启动效应。我们发现，英语字母识别是类似的聋人和听力读者，扩大以前的研究结果与听力读者的无掩蔽介绍。实验二考察了聋人手语者对英文字母和手语指读字体的启动效应。我们发现，fingerspelling字体启动fingerspelling字体和英文字母，但英文字母并不启动fingerspelling字体，表明字母和fingerspelling字体之间的启动不对称。我们还发现了一个N400的启动效应时，启动的手指拼写字体，这可能反映了战略访问的词汇名称的信件。研究表明，聋人ASL-英语双语者处理英语字母和ASL手指拼写不同，这两个系统可能有不同的神经表征。然而，手指拼写字体可以启动英文字母的事实表明，这两种拼写法可能在某种程度上共享抽象表示。
Letter recognition plays an important role in reading and follows different phases of processing, from early visual feature detection to the access of abstract letter representations. Deaf ASL–English bilinguals experience orthography in two forms: English letters and fingerspelling. However, the neurobiological nature of fingerspelling representations, and the relationship between the two orthographies, remains unexplored. We examined the temporal dynamics of single English letter and ASL fingerspelling font processing in an unmasked priming paradigm with centrally presented targets for 200 ms preceded by 100 ms primes. Event-related brain potentials were recorded while participants performed a probe detection task. Experiment 1 examined English letter-to-letter priming in deaf signers and hearing non-signers. We found that English letter recognition is similar for deaf and hearing readers, extending previous findings with hearing readers to unmasked presentations. Experiment 2 examined priming effects between English letters and ASL fingerspelling fonts in deaf signers only. We found that fingerspelling fonts primed both fingerspelling fonts and English letters, but English letters did not prime fingerspelling fonts, indicating a priming asymmetry between letters and fingerspelling fonts. We also found an N400-like priming effect when the primes were fingerspelling fonts which might reflect strategic access to the lexical names of letters. The studies suggest that deaf ASL–English bilinguals process English letters and ASL fingerspelling differently and that the two systems may have distinct neural representations. However, the fact that fingerspelling fonts can prime English letters suggests that the two orthographies may share abstract representations to some extent.
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影响因子：
2.6
作者：
Glezer LS;Weisberg J;O'Grady Farnady C;McCullough S;Midgley KJ;Holcomb PJ;Emmorey K
通讯作者：
Emmorey K
影响因子：
3.7
作者：
Eddy, Marianna;Schmid, Annette;Holcomb, Phillip J.
通讯作者：
Holcomb, Phillip J.
影响因子：
2.3
作者：
Emmorey, Karen;McCullough, Stephen;Weisberg, Jill
通讯作者：
Weisberg, Jill
影响因子：
14.4
作者：
BARROW, HG;TENENBAUM, JM
通讯作者：
TENENBAUM, JM
影响因子：
2.5
作者：
Grainger J;Holcomb PJ
通讯作者：
Holcomb PJ