Optimisation of hand posture stimulation using an electrode array and iterative learning control | Zendy

Timothy Exell | Zendy; Christopher Freeman | Zendy; Katie Meadmore | Zendy; AnnMarie Hughes | Zendy; Emma Hallewell | Zendy; Jane Burridge | Zendy

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Optimisation of hand posture stimulation using an electrode array and iterative learning control

Author(s) -

Timothy Exell,

Christopher Freeman,

Katie Meadmore,

AnnMarie Hughes,

Emma Hallewell,

Jane Burridge

Publication year - 2013

Publication title -

journal of automatic control

Language(s) - English

Resource type - Journals

eISSN - 2406-0984

pISSN - 1450-9903

DOI - 10.2298/jac1301001e

Subject(s) - computer science , wrist , electrode array , forearm , computer vision , artificial intelligence , functional electrical stimulation , gesture , simulation , stimulation , physical medicine and rehabilitation , computer hardware , electrode , medicine , surgery , chemistry

Nonlinear optimisation-based search algorithms have been developed for the precise stimulation of muscles in the wrist and hand, to enable stroke patients to attain predefined gestures. These have been integrated in a system comprising a 40 element surface electrode array that is placed on the forearm, an electrogoniometer and data glove supplying position data from 16 joint angles, and custom signal generation and switching hardware to route the electrical stimulation to individual array elements. The technology will be integrated in a upper limb rehabilitation system currently undergoing clinical trials to increase their ability to perform functional tasks requiring fine hand and finger movement. Initial performance results from unimpaired subjects show the successful reproduction of six reference hand postures using the system

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