کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4349927 | 1296964 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: The N2b and the N400
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: The N2b and the N400 Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: The N2b and the N400](/preview/png/4349927.png)
چکیده انگلیسی
Event-related potential (ERP) correlates of semantic and non-semantic mismatch in the 200-400Â ms time interval were dissociated. Twelve subjects observed pairs of single letters and digits presented serially, and decided whether the colour (blue or red) or the category membership (letter or number) of the second item in a pair matched the first one. In both tasks mismatch elicited central N2b components (220Â ms peak latency in the colour matching task, and 280Â ms peak latency in the category matching task). Furthermore, in the category matching task a centro-parietal negativity (N400) emerged. The topography of the N2b effect was clearly distinct from that of the N400 effect. Analysis of event-related spectral perturbations confirmed that N400 time-range effects were specific to category matching. We conclude that while the N400 effect is a specific marker of semantic mismatch, the N2b effect is a general correlate of detecting mismatch between the representations of task-relevant features.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 412, Issue 1, 22 January 2007, Pages 18-23
Journal: Neuroscience Letters - Volume 412, Issue 1, 22 January 2007, Pages 18-23
نویسندگان
Dénes Szűcs, Fruzsina Soltész, István Czigler, Valéria Csépe,