کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10464753 | 925699 | 2013 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distinct electrophysiological indices of maintenance in auditory and visual short-term memory
ترجمه فارسی عنوان
شاخص های الکتروفیزیولوژیک مشخص در تعمیر و نگهداری در حافظه کوتاه مدت و شنیداری
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
چکیده انگلیسی
We compared the electrophysiological correlates for the maintenance of non-musical tones sequences in auditory short-term memory (ASTM) to those for the short-term maintenance of sequences of coloured disks held in visual short-term memory (VSTM). The visual stimuli yielded a sustained posterior contralateral negativity (SPCN), suggesting that the maintenance of sequences of coloured stimuli engaged structures similar to those involved in the maintenance of simultaneous visual displays. On the other hand, maintenance of acoustic sequences produced a sustained negativity at fronto-central sites. This component is named the Sustained Anterior Negativity (SAN). The amplitude of the SAN increased with increasing load in ASTM and predicted individual differences in the performance. There was no SAN in a control condition with the same auditory stimuli but no memory task, nor one associated with visual memory. These results suggest that the SAN is an index of brain activity related to the maintenance of representations in ASTM that is distinct from the maintenance of representations in VSTM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropsychologia - Volume 51, Issue 13, November 2013, Pages 2939-2952
Journal: Neuropsychologia - Volume 51, Issue 13, November 2013, Pages 2939-2952
نویسندگان
Christine Lefebvre, François Vachon, Stephan Grimault, Jennifer Thibault, Synthia Guimond, Isabelle Peretz, Robert J. Zatorre, Pierre JolicÅur,