کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7317479 | 1475538 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Contrasting dynamics of memory consolidation for novel word forms and meanings revealed by behavioral and neurophysiological markers
ترجمه فارسی عنوان
پویایی کنترلی تقویت حافظه برای فرم های جدید کلمه و معانی نشان می دهد توسط نشانگرهای رفتاری و نوروفیزیولوژیک
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
چکیده انگلیسی
Learning novel words is a challenging process for our memory systems; we must be able to recall new word forms and meanings in order to communicate. However, the dynamics of the word memory formation is still unclear. Here, we addressed the temporal profile of two key cognitive markers of memory consolidation in the domain of word learning: i) the susceptibility of recently learned novel words to memory interference; ii) their lexical integration using a semantic judgment task while recording the ERPs responses. Young adults acquired a set of novel picture-label-meaning associations. In a first experiment, we performed a temporal gradient of retroactive interference (5â¯min, 30â¯min, 4â¯h and 24â¯h) and evaluated the memory retention 48â¯h after learning. In a second experiment, we studied the dynamics of the integration of these novel words, by measuring their N400 modulation when preceded by semantically related words, at 30â¯min or 48â¯h after learning. Our results showed that the word-form memory was affected by the interference treatment when it was presented 5â¯min after learning, but not at later times. On the other hand, only 48â¯h after learning it was possible to observe a neurophysiological index of semantic-priming (reduced N400 response). These results point to the existence of two contrasting processes that help to build the memory for word forms and meanings. A rapid mechanism would enable word learning while mitigating forgetting, while a slow consolidation would allow the novel meanings to be integrated into previous semantic networks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropsychologia - Volume 117, August 2018, Pages 472-482
Journal: Neuropsychologia - Volume 117, August 2018, Pages 472-482
نویسندگان
Laura Kaczer, Luz Bavassi, AgustÃn Petroni, Rodrigo S. Fernández, Julieta Laurino, SofÃa Degiorgi, Eithan Hochman, Cecilia Forcato, MarÃa E. Pedreira,