کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9953015 | 1475425 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Perceptual facilitation of word recognition through motor activation during sentence comprehension
ترجمه فارسی عنوان
تسهیل ادراک تشخیص کلمه از طریق فعال سازی موتور در هنگام درک جمله
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کلمات کلیدی
پیش بینی زبان، فعال سازی موتور، خواندن، مغناطیس فوگلوگرافی، نوسان عصبی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
چکیده انگلیسی
Despite the growing literature on anticipatory language processing, the brain dynamics of this high-level predictive process are still unclear. In the present MEG study, we analyzed pre- and post-stimulus oscillatory activity time-locked to the reading of a target word. We experimentally contrasted the processing of the same target word following two highly constraining sentence contexts, in which the constraint was driven either by the semantic content or by the lexical association between words. Previous research suggests the presence of sensory facilitation for expected words in the latter condition but not in the former. We observed a dissociation between beta (â¼20Â Hz) and gamma (>50Â Hz) band activity in pre- and post-stimulus time intervals respectively. Both the beta and gamma effects were evident in occipital brain regions, and only the pre-stimulus beta effect additionally involved left pre-articulatory motor regions. Lexically constrained (vs. semantically constrained) words elicited reduced beta power around 400Â msec before the target word in motor regions and a functionally related gamma enhancement in occipital regions around 200Â msec post-target. The present findings highlight the role of the motor network in word-form prediction and support proposals claiming that low-level perceptual representations can be pre-activated during language prediction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cortex - Volume 108, November 2018, Pages 144-159
Journal: Cortex - Volume 108, November 2018, Pages 144-159
نویسندگان
Nicola Molinaro, Irene F. Monsalve,