کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3086178 1189849 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Neural Mechanism and Clinical Significance of the Plantar Grasp Reflex in Infants
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب تکاملی
پیش نمایش صفحه اول مقاله
Neural Mechanism and Clinical Significance of the Plantar Grasp Reflex in Infants
چکیده انگلیسی

The plantar grasp reflex can be elicited in all normal infants from 25 weeks of postconceptional age until the end of 6 months of corrected age according to the expected birth date. This reflex in human infants can be regarded as a rudiment of responses that were once essential for ape infants in arboreal life. The spinal center for this reflex is probably located at the L5-S2 levels, which, however, are controlled by higher brain structures. Nonprimary motor areas may exert regulatory control of the spinal reflex mechanism through interneurons. In infants, this reflex can be elicited as the result of insufficient control of the spinal mechanism by the immature brain. In adults, lesions in nonprimary motor areas may cause a release of inhibitory control by spinal interneurons, leading to a reappearance of the reflex. The plantar grasp reflex in infants is of high clinical significance. A negative or diminished reflex during early infancy is often a sensitive indicator of spasticity. Infants with athetoid type cerebral palsy exhibit an extremely strong retention of the reflex, and infants with mental retardation also exhibit a tendency toward prolonged retention of the reflex.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pediatric Neurology - Volume 43, Issue 2, August 2010, Pages 81–86
نویسندگان
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