Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5738346 | Neuroscience Letters | 2017 | 5 Pages |
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 (80-120Â ms poststimulus) followed by the typical left-lateralized N170 and an enhanced parietal negativity for nonwords (150-200Â ms). These results should provide further insights into the interaction processes between attention and early stages of print processing.
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Authors
Tomoki Uno, Yasuko Okumura, Tetsuko Kasai,