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Print-specific N170 involves multiple subcomponents for Japanese Hiragana

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Title: Print-specific N170 involves multiple subcomponents for Japanese Hiragana
Authors: Uno, Tomoki Browse this author
Okumura, Yasuko Browse this author →KAKEN DB
Kasai, Tetsuko Browse this author →KAKEN DB
Keywords: Visual word processing
Event-related potential
N170
Attention
Issue Date: 22-May-2017
Publisher: Elsevier
Journal Title: Neuroscience letters
Volume: 650
Start Page: 77
End Page: 81
Publisher DOI: 10.1016/j.neulet.2017.04.020
PMID: 28412533
Abstract: Print-specific N170 in event-related potentials is generally considered to reflect relatively automatic processing for letter strings, which is crucial for fluent reading. However, our previous studies demonstrated that print-specific N170 for transparent Japanese Hiragana script consists of at least two subcomponents under rapid stimulus presentation: an attention-related left-lateralized N170 and a bilateral N170 associated with more automatic orthographic processes (Okumura, Kasai & Murohashi, 2014, 2015). The present study aimed to confirm the latter component by controlling presentation frequency of letters and nonlinguistic visual controls (i.e., symbols), but found a quite different pattern of results; an enhanced occipito-temporal positivity for words (80-120 ms poststimulus) followed by the typical left-lateralized N170 and an enhanced parietal negativity for nonwords (150-200 ms). These results should provide further insights into the interaction processes between attention and early stages of print processing.
Rights: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/73709
Appears in Collections:教育学院・教育学研究院 (Graduate School of Education / Faculty of Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河西 哲子

 

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