کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6277404 | 1295757 | 2010 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Neural correlates of relational reasoning and the symbolic distance effect: involvement of parietal cortex
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کلمات کلیدی
SDEFWHMMNISymbolic distanceFMRIB's Linear Image Registration ToolFSLBrain extraction tool - ابزار استخراج مغزSymbolic distance effect - اثر فاصله نمادینRelational reasoning - استدلال ارتباطیtransitive inference - استنتاج گذراfMRI - تصویرسازی تشدید مغناطیسی کارکردیfunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیBET - شرطFlame - شعلهFLIRT - طلوعfull width at half maximum - عرض کامل در نیمی از حداکثرFilm - فیلم، پردهبینیMontreal Neurological Institute - موسسه عصبی مونترالFMRIB Software Library - کتابخانه نرم افزار FMRIB
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel, five-term relational reasoning paradigm was employed during functional magnetic resonance imaging to investigate neural correlates of the symbolic distance effect (SDE). Prior to scanning, participants learned a series of more-than (E>D>C>B>A) or less-than (AA) and nonadjacent one-step (AA, D>B and E>C) and two-step (AA and E>B) combinatorial entailed tasks. In terms of brain activation, the SDE was identified in the inferior frontal cortex, dorsolateral prefrontal cortex, and bilateral parietal cortex with a graded activation pattern from adjacent to one-step and two-step relations. We suggest that this captures the behavioural SDE of increased accuracy and decreased reaction time from adjacent to two-step relations. One-step relations involving endpoints A or E resulted in greater parietal activation compared to one-step relations without endpoints. Novel contrasts found enhanced activation in right parietal and prefrontal cortices during mutually entailed tasks only for participants who had learned all less-than relations. Increased parietal activation was found for one-step tasks that were inconsistent with prior training. Overall, the findings demonstrate a crucial role for parietal cortex during relational reasoning with a spatially ordered array.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 168, Issue 1, 16 June 2010, Pages 138-148
Journal: Neuroscience - Volume 168, Issue 1, 16 June 2010, Pages 138-148
نویسندگان
E.C. Hinton, S. Dymond, U. von Hecker, C.J. Evans,