کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7314427 1475464 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Speaker's hand gestures modulate speech perception through phase resetting of ongoing neural oscillations
ترجمه فارسی عنوان
حرکات دست بلندپروازانه، ادراک گفتار را از طریق بازنشستگی فزاینده نوسانات عصبی ادامه می دهند
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی
Speakers often accompany speech with spontaneous beat gestures in natural spoken communication. These gestures are usually aligned with lexical stress and can modulate the saliency of their affiliate words. Here we addressed the consequences of beat gestures on the neural correlates of speech perception. Previous studies have highlighted the role played by theta oscillations in temporal prediction of speech. We hypothesized that the sight of beat gestures may influence ongoing low-frequency neural oscillations around the onset of the corresponding words. Electroencephalographic (EEG) recordings were acquired while participants watched a continuous, naturally recorded discourse. The phase-locking value (PLV) at word onset was calculated from the EEG from pairs of identical words that had been pronounced with and without a concurrent beat gesture in the discourse. We observed an increase in PLV in the 5-6 Hz theta range as well as a desynchronization in the 8-10 Hz alpha band around the onset of words preceded by a beat gesture. These findings suggest that beats help tune low-frequency oscillatory activity at relevant moments during natural speech perception, providing a new insight of how speech and paralinguistic information are integrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cortex - Volume 68, July 2015, Pages 76-85
نویسندگان
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