دانلود مقاله ISI انگلیسی شماره 77353
عنوان فارسی مقاله

استرس باعث افزایش تثبیت حافظه اعلانی می شود

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
77353 2014 12 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Stress enhances reconsolidation of declarative memory
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Psychoneuroendocrinology, Volume 46, August 2014, Pages 102–113

کلمات کلیدی
شناخت مجدد؛ حافظه اعلانی؛ فشار؛
پیش نمایش مقاله
پیش نمایش مقاله استرس باعث افزایش تثبیت حافظه اعلانی می شود

چکیده انگلیسی

Retrieval of negative emotional memories is often accompanied by the experience of stress. Upon retrieval, a memory trace can temporarily return into a labile state, where it is vulnerable to change. An unresolved question is whether post-retrieval stress may affect the strength of declarative memory in humans by modulating the reconsolidation process. Here, we tested in two experiments whether post-reactivation stress may affect the strength of declarative memory in humans. In both experiments, participants were instructed to learn neutral, positive and negative words. Approximately 24 h later, participants received a reminder of the word list followed by exposure to the social evaluative cold pressor task (reactivation/stress group, nexp1 = 20; nexp2 = 18) or control task (reactivation/no-stress group, nexp1 = 23; nexp2 = 18). An additional control group was solely exposed to the stress task, without memory reactivation (no-reactivation/stress group, nexp1 = 23; nexp2 = 21). The next day, memory performance was tested using a free recall and a recognition task. In the first experiment we showed that participants in the reactivation/stress group recalled more words than participants in the reactivation/no-stress and no-reactivation/stress group, irrespective of valence of the word stimuli. Furthermore, participants in the reactivation/stress group made more false recognition errors. In the second experiment we replicated our observations on the free recall task for a new set of word stimuli, but we did not find any differences in false recognition. The current findings indicate that post-reactivation stress can improve declarative memory performance by modulating the process of reconsolidation. This finding contributes to our understanding why some memories are more persistent than others.

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