کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11023434 1701291 2018 36 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced deviant responses in patterned relative to random sound sequences
ترجمه فارسی عنوان
پاسخ های انحرافی پیشرفته در الگوی نسبت به توالی تصادفی تصادفی
کلمات کلیدی
تعجب، خطای پیش بینی، منفی بودن ناسازگاری، برنامه نویسی پیش بینی شده قشر اوربیتوفرنتال،
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی
The brain draws on knowledge of statistical structure in the environment to facilitate detection of new events. Understanding the nature of this representation is a key challenge in sensory neuroscience. Specifically, it is unknown whether real-time perception of rapidly-unfolding sensory signals is driven by a coarse or detailed representation of the proximal stimulus history. We recorded electroencephalography brain responses to frequency outliers in regularly-patterned (REG) versus random (RAND) tone-pip sequences which were generated anew on each trial. REG and RAND sequences were matched in frequency content and span, only differing in the specific order of the tone-pips. Stimuli were very rapid, limiting conscious reasoning in favour of automatic processing of regularity. Listeners were naïve and performed an incidental visual task. Outliers within REG evoked a larger response than matched outliers in RAND. These effects arose rapidly (within 80 msec) and were underpinned by distinct sources from those classically associated with frequency-based deviance detection. These findings are consistent with the notion that the brain continually maintains a detailed representation of ongoing sensory input and that this representation shapes the processing of incoming information. Predominantly auditory-cortical sources code for frequency deviance whilst frontal sources are associated with tracking more complex sequence structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cortex - Volume 109, December 2018, Pages 92-103
نویسندگان
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