کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
942676 925151 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
What Puts the How in Where? Tool Use and the Divided Visual Streams Hypothesis
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
What Puts the How in Where? Tool Use and the Divided Visual Streams Hypothesis
چکیده انگلیسی

An influential theory suggests that the dorsal (occipito-parietal) visual stream computes representations of objects for purposes of guiding actions (determining ‘how’) independently of ventral (occipito-temporal) stream processes supporting object recognition and semantic processing (determining ‘what’). Yet, the ability of the dorsal stream alone to account for one of the most common forms of human action, tool use, is limited. While experience-dependent modifications to existing dorsal stream representations may explain simple tool use behaviors (e.g., using sticks to extend reach) found among a variety of species, skillful use of manipulable artifacts (e.g., cups, hammers, pencils) requires in addition access to semantic representations of objects' functions and uses. Functional neuroimaging suggests that this latter information is represented in a left-lateralized network of temporal, frontal and parietal areas. I submit that the well-established dominance of the human left hemisphere in the representation of familiar skills stems from the ability for this acquired knowledge to influence the organization of actions within the dorsal pathway.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cortex - Volume 43, Issue 3, 2007, Pages 368–375
نویسندگان
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