Grip force parameters in precision grip of individuals with myelomeningocele
نویسندگان
چکیده
منابع مشابه
Wrist action affects precision grip force.
When moving objects with a precision grip, fingertip forces normal to the object surface (grip force) change in parallel with forces tangential to the object (load force). We investigated whether voluntary wrist actions can affect grip force independent of load force, because the extrinsic finger muscles cross the wrist. Grip force increased with wrist angular speed during wrist motion in the h...
متن کاملHuman Grip Responses to Perturbations of Objects During Precision Grip
Grasp stability of a precision grip requires fine control of three-dimensional fingertip forces. This chapter begins with a review of the literature on how precision grip forces are affected by intrinsic object properties, anticipation, load direction, and sensory feedback. Previous studies have established that reactive, initial increases in grip forces (pulse-like ‘‘catch-up responses’’ in gr...
متن کاملPower grip and precision handling.
The recent study by Napier (1956) of the prehensile movements of the human hand is of outstanding importance because it points out that the "nature of the intended activity finally influences the pattern of the grip" (p. 906). He distinguishes between the "precision grip" and the "power grip" and states that these patterns, "either separately or in combination, provide the anatomical basis for ...
متن کاملEvent-Based Haptics with Grip Force Compensation
Previous work in event-based haptics has demonstrated that augmenting position-based force feedback with highfrequency impact transients significantly improves the realism of virtual contact. Transients can be portrayed more accurately by accounting for the dynamic relationship between actuator force and hand acceleration, a technique we call acceleration matching. This work extends the method ...
متن کاملTangential torque effects on the control of grip forces when holding objects with a precision grip.
When we manipulate small objects, our fingertips are generally subjected to tangential torques about the axis normal to the grasp surface in addition to linear forces tangential to the grasp surface. Tangential torques can arise because the normal force is distributed across the contact area rather than focused at a point. We investigated the effects of tangential torques and tangential forces ...
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ژورنال
عنوان ژورنال: Developmental Medicine & Child Neurology
سال: 2007
ISSN: 0012-1622,1469-8749
DOI: 10.1111/j.1469-8749.2003.tb00339.x