دانلود مقاله ISI انگلیسی شماره 73338
عنوان فارسی مقاله

تصویرسازی ذهنی بیان دلالت دو مکانیسم فعال شدن مجدد ادراکی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
73338 2016 12 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Mental imagery of speech implicates two mechanisms of perceptual reactivation
منبع

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

Journal : Cortex, Volume 77, April 2016, Pages 1–12

کلمات کلیدی
پیش بینی؛ شبیه سازی ذهنی؛ ادغام حسی؛ حافظه
پیش نمایش مقاله
پیش نمایش مقاله تصویرسازی ذهنی بیان دلالت دو مکانیسم فعال شدن مجدد ادراکی

چکیده انگلیسی

Sensory cortices can be activated without any external stimuli. Yet, it is still unclear how this perceptual reactivation occurs and which neural structures mediate this reconstruction process. In this study, we employed fMRI with mental imagery paradigms to investigate the neural networks involved in perceptual reactivation. Subjects performed two speech imagery tasks: articulation imagery (AI) and hearing imagery (HI). We found that AI induced greater activity in frontal-parietal sensorimotor systems, including sensorimotor cortex, subcentral (BA 43), middle frontal cortex (BA 46) and parietal operculum (PO), whereas HI showed stronger activation in regions that have been implicated in memory retrieval: middle frontal (BA 8), inferior parietal cortex and intraparietal sulcus. Moreover, posterior superior temporal sulcus (pSTS) and anterior superior temporal gyrus (aSTG) was activated more in AI compared with HI, suggesting that covert motor processes induced stronger perceptual reactivation in the auditory cortices. These results suggest that motor-to-perceptual transformation and memory retrieval act as two complementary mechanisms to internally reconstruct corresponding perceptual outcomes. These two mechanisms can serve as a neurocomputational foundation for predicting perceptual changes, either via a previously learned relationship between actions and their perceptual consequences or via stored perceptual experiences of stimulus and episodic or contextual regularity.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.