Feedback Signal Based Upon Force and Time Delay
Open Access
- 1 October 1980
- journal article
- Published by Oxford University Press (OUP) in PTJ: Physical Therapy & Rehabilitation Journal
- Vol. 60 (10) , 1289-1290
- https://doi.org/10.1093/ptj/60.10.1289
Abstract
Recently a device has been developed to augment sensory feedback during weight-bearing activities.1 The Krusen Limb Load Monitor (Model 101)* consists of a force transducer housed within a footplate (foreground, Fig. 1) placed in the sole of a shoe. The footplate is connected to the limb-load monitor (LLM) by a coaxial cable. An audio tone can be emitted through an amplifier placed within the LLM when force upon the plate reaches a preset (threshold) value. Through training by shaping responses to attempts at symmetrical standing, some hemiplegic patients can correct their static limb loading patterns2 and possibly retain these corrected patterns once feedback has been withdrawn.3 The LLM can be used either as a force-feedback device for weight-shifting activities during stance or, by adding our time delay modification† (right, Fig. 1), for feedback to the existing force-sensing component.…Keywords
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