کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5707551 1603843 2017 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Balancing sensory inputs: Sensory reweighting of ankle proprioception and vision during a bipedal posture task
ترجمه فارسی عنوان
تعادل حواس حسی: اضافه وزن حساس به مفصل مچ پا و بینایی در طول یک کار دو طرفه
کلمات کلیدی
اضافه وزن حسی، یکپارچه سازی چند جانبه، کنترل پستی لرزش دم جریان بصری،
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
چکیده انگلیسی
During multisensory integration, it has been proposed that the central nervous system (CNS) assigns a weight to each sensory input through a process called sensory reweighting. The outcome of this integration process is a single percept that is used to control posture. The main objective of this study was to determine the interaction between ankle proprioception and vision during sensory integration when the two inputs provide conflicting sensory information pertaining to direction of body sway. Sensory conflict was created by using bilateral Achilles tendon vibration and contracting visual flow and produced body sway in opposing directions when applied independently. Vibration was applied at 80 Hz, 1 mm amplitude and the visual flow consisted of a virtual reality scene with concentric rings retreating at 3m/s. Body sway elicited by the stimuli individually and in combination was evaluated in 10 healthy young adults by analyzing center of pressure (COP) displacement and lower limb kinematics. The magnitude of COP displacement produced when vibration and visual flow were combined was found to be lesser than the algebraic sum of COP displacement produced by the stimuli when applied individually. This suggests that multisensory integration is not merely an algebraic summation of individual cues. Instead the observed response might be a result of a weighted combination process with the weight attached to each cue being directly proportional to the relative reliability of the cues. The moderating effect of visual flow on postural instability produced by vibration points to the potential use of controlled visual flow for balance training.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gait & Posture - Volume 52, February 2017, Pages 244-250
نویسندگان
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