Selective activation of muscle groups in the feline hindlimb thorough electrical microstimulation of the ventral lumbo-sacral spinal cord

Update item information
Publication Type Journal Article
School or College College of Engineering
Department Bioengineering
Creator Horch, Kenneth W.
Other Author Mushahwar, V. K.
Title Selective activation of muscle groups in the feline hindlimb thorough electrical microstimulation of the ventral lumbo-sacral spinal cord
Date 2000
Description Selective activation of muscle groups in the feline hindlimb by electrical stimulation of the ventral lumbo-sacral spinal cord was investigated. Spinal cord segments L5 to S1 were mapped using a penetrating tungsten needle electrode. Locations that produced isolated contraction of quadriceps, tibialis anterior or triceps surae/plantaris muscles when stimulated with a current of 40 A or less, and in which spread of activity to other muscles was not detected after increasing the stimulus to at least twice the threshold level, were defined as belonging to the target muscle's œactivation pool. The quadriceps activation pool was found to extend from the beginning of L5 to the middle of L6. The tibialis anterior activation pool extended from the beginning of L6 to the middle of L7, and the triceps surae/plantaris activation pool extended from the caudal end of L6 to the beginning of S1. The three activation pools were located in Rexed motor lamina IX and their spatial organization was found to correspond well with that of the anatomically defined motor pools innervating the same muscles. The spatial and functional segregation of motor pools manifested at the spinal cord level can have direct applications in the areas of functional electrical stimulation and motor control.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Volume 8
Issue 1
Subject Functional electrical stimulation; Motor pools; Spinal chord stimulation
Subject MESH Musculoskeletal Manipulations; Lumbosacral Region; Electric Stimulation
Language eng
Bibliographic Citation Horch. K. W., & Mushahwar, V. K. (2000). Selective activation of muscle groups in the feline hindlimb thorough electrical microstimulation of the ventral lumbo-sacral spinal cord. IEEE Transactions on Rehabilitation Engineering, 8(1).
Rights Management (c) Institute of Electrical and Electronics Engineers (IEEE)
Format Medium application/pdf
Format Extent 441,769 Bytes
Identifier ir-main,3874
ARK ark:/87278/s6058042
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 703550
Reference URL https://collections.lib.utah.edu/ark:/87278/s6058042
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