Mapping 3D Sensory Inputs onto Spinal Interneurons

C. J. Heckman; M. D. Johnson; A. Hyngstrom; E. J. Perreault

Mapping 3D Sensory Inputs onto Spinal Interneurons

C. J. Heckman^*, M. D. Johnson, A. Hyngstrom, E. J. Perreault

^*Corresponding author for this work

Research output: Contribution to journal › Conference article

Abstract

Extracellular recordings of 43 spinal interneurons were performed in the decerebrate cat while its hindlimb was manipulated in 3 dimensional space with a 6-degree of freedom robotic arm. Internal/external rotations, toe in/toe out and flexion/extension movements were performed about the ankle joint. Peripheral nerve stimulation was used to categorize cells by field potential threshold into gr la and gr II types. 80% (16/20) of the gr la cells showed firing frequency changes to less than half of the rotations imposed by the robot and only 20% to more than half. 39% (9/23) of the gr II cells showed responses to less than half of the imposed movements and 61% (14/23) of the gr II cells responded to more than half of the imposed movements.

Original language	English (US)
Pages (from-to)	3837-3839
Number of pages	3
Journal	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume	4
State	Published - Dec 1 2003
Event	A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico Duration: Sep 17 2003 → Sep 21 2003

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Keywords

Interneurons
Sensorimotor transformation
Spinal cord

ASJC Scopus subject areas

Signal Processing
Biomedical Engineering
Computer Vision and Pattern Recognition
Health Informatics

Cite this

Heckman, C. J., Johnson, M. D., Hyngstrom, A., & Perreault, E. J. (2003). Mapping 3D Sensory Inputs onto Spinal Interneurons. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 4, 3837-3839.

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title = "Mapping 3D Sensory Inputs onto Spinal Interneurons",

abstract = "Extracellular recordings of 43 spinal interneurons were performed in the decerebrate cat while its hindlimb was manipulated in 3 dimensional space with a 6-degree of freedom robotic arm. Internal/external rotations, toe in/toe out and flexion/extension movements were performed about the ankle joint. Peripheral nerve stimulation was used to categorize cells by field potential threshold into gr la and gr II types. 80% (16/20) of the gr la cells showed firing frequency changes to less than half of the rotations imposed by the robot and only 20% to more than half. 39% (9/23) of the gr II cells showed responses to less than half of the imposed movements and 61% (14/23) of the gr II cells responded to more than half of the imposed movements.",

keywords = "Interneurons, Sensorimotor transformation, Spinal cord",

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year = "2003",

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language = "English (US)",

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journal = "Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings",

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note = "A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society ; Conference date: 17-09-2003 Through 21-09-2003",

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TY - JOUR

T1 - Mapping 3D Sensory Inputs onto Spinal Interneurons

AU - Heckman, C. J.

AU - Johnson, M. D.

AU - Hyngstrom, A.

AU - Perreault, E. J.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - Extracellular recordings of 43 spinal interneurons were performed in the decerebrate cat while its hindlimb was manipulated in 3 dimensional space with a 6-degree of freedom robotic arm. Internal/external rotations, toe in/toe out and flexion/extension movements were performed about the ankle joint. Peripheral nerve stimulation was used to categorize cells by field potential threshold into gr la and gr II types. 80% (16/20) of the gr la cells showed firing frequency changes to less than half of the rotations imposed by the robot and only 20% to more than half. 39% (9/23) of the gr II cells showed responses to less than half of the imposed movements and 61% (14/23) of the gr II cells responded to more than half of the imposed movements.

AB - Extracellular recordings of 43 spinal interneurons were performed in the decerebrate cat while its hindlimb was manipulated in 3 dimensional space with a 6-degree of freedom robotic arm. Internal/external rotations, toe in/toe out and flexion/extension movements were performed about the ankle joint. Peripheral nerve stimulation was used to categorize cells by field potential threshold into gr la and gr II types. 80% (16/20) of the gr la cells showed firing frequency changes to less than half of the rotations imposed by the robot and only 20% to more than half. 39% (9/23) of the gr II cells showed responses to less than half of the imposed movements and 61% (14/23) of the gr II cells responded to more than half of the imposed movements.

KW - Interneurons

KW - Sensorimotor transformation

KW - Spinal cord

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JO - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

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T2 - A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Y2 - 17 September 2003 through 21 September 2003

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Mapping 3D Sensory Inputs onto Spinal Interneurons

Abstract

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Keywords

ASJC Scopus subject areas

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