کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
929863 1474408 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Brain oxygenation patterns during the execution of tool use demonstration, tool use pantomime, and body-part-as-object tool use
ترجمه فارسی عنوان
الگوهای اکسیژن مغز در طی اجرای تظاهرات ابزار، استفاده از ابزار پاندمیم و استفاده از ابزار بدن به عنوان یک شیء
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی


• The present study investigated neural correlates of tool use related hand movements during a naturalistic way of execution.
• Neural motor functions during the performance of tool use demonstration, tool use pantomime, and tool use BPO performances rely on lateralized functions.
• Postcentral cortices subserve tool use demonstration movements with tool in hand.
• Premotor and somatosensory cortices of the left hemisphere subserve tool related hand movements when using the left hand.

Divergent findings exist whether left and right hemispheric pre- and postcentral cortices contribute to the production of tool use related hand movements. In order to clarify the neural substrates of tool use demonstrations with tool in hand, tool use pantomimes without tool in hand, and body-part-as-object presentations of tool use (BPO) in a naturalistic mode of execution, we applied functional Near InfraRed Spectroscopy (fNIRS) in twenty-three right-handed participants. Functional NIRS techniques allow for the investigation of brain oxygenation during the execution of complex hand movements with an unlimited movement range. Brain oxygenation patterns were retrieved from 16 channels of measurement above pre- and postcentral cortices of each hemisphere. The results showed that tool use demonstration with tool in hand leads to increased oxygenation as compared to tool use pantomimes in the left hemispheric somatosensory gyrus. Left hand executions of the demonstration of tool use, pantomime of tool use, and BPO of tool use led to increased oxygenation in the premotor and somatosensory cortices of the left hemisphere as compared to right hand executions of either condition. The results indicate that the premotor and somatosensory cortices of the left hemisphere constitute relevant brain structures for tool related hand movement production when using the left hand, whereas the somatosensory cortex of the left hemisphere seems to provide specific mental representations when performing tool use demonstrations with the tool in hand.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Psychophysiology - Volume 96, Issue 1, April 2015, Pages 1–7
نویسندگان
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