Spinal cord associative plasticity
Ended Project Grant Awarded Last action
- Award ID
- R01NS124224
- Recipient
-
The Trustees Of Columbia University In The City Of New York UEI QHF5ZZ114M72
- Awarding agency
-
National Institute of Neurological Disorders and Stroke
National Institutes of Health, Department of Health and Human Services
- Obligated
- $6,177,819
Award facts
- Assistance listing
- 93.853 Extramural Research Programs in the Neurosciences and Neurological Disorders
- Completion date
- Funding
-
- $5,070,201.00 Federal
- $1,107,618.00 Non-federal
- Place of performance
- New York, NY 10032, USA
Award details come from USAspending.gov.
Description
- Abstract
- Experience leads to behavioral change through associative activity of neural circuits. Using this principle, paired stimulation has been used to selectively strengthen circuits. We propose to target the spinal cord for associative plasticity, exploiting strong interaction of descending motor connections and large diameter afferents, which mediate the senses of joint position and muscle tension. In rats and humans, sub-threshold cervical stimulation, which activates afferents, strongly augments motor cortex evoked muscle responses when timed to converge in the spinal cord. When pairing is performed repeatedly in rats, spinal cord associative plasticity (SCAP) is induced with a large and sustained increase in excitability. In rats with cervical spinal cord injury (SCI), 10 days of SCAP significantly improved forelimb function. We hypothesize that SCAP will strengthen spinal excitability, modulate reflexes, and increase pinch force in people with cervical SCI. Aim 1 tests the timing of pairing and the circuits mediating paired stimulation, key issues for proper targeting. Timing cortical and spinal stimulation to converge in the spinal cord, as opposed to cortex, is predicted to be strongest. We will use both non-invasive and invasive spinal cord stimulation. For non-invasive stimulation, we will combine transcutaneous stimulation over the neck with transcranial magnetic stimulation over cortex. For invasive stimulation, we will combine spinal epidural stimulation with transcranial electrical stimulation during clinically indicated surgery. Aim 2 tests the effects of SCAP to produce a lasting increase in spinal excitability, as measured by both cortical and spinal evoked potentials and pinch dynamometry. Controls will isolate the changes induced specifically through pairing. Finally, aim 3 tests whether paired motor cortex and cervical spinal cord stimulation produces similar effects in people with the two most common causes of SCI, cervical myelopathy and traumatic SCI, as uninjured participants. Spinal excitability is predicted to increase, pinch force is expected to become stronger, and spinal reflexes are expected to diminish. The integrity of spinal pathways will be measured with both physiology and analysis of cervical MRI. Together, these studies will fill critical gaps about the nature of associative plasticity in the sensorimotor system and test a new strategy to strengthen residual connections after SCI. This strategy will be tested with both invasive and non-invasive stimulation, allowing direct comparison of these approaches for the first time. Thus, we intend to close gaps in our understanding of how paired stimulation of sensorimotor circuits should be targeted to the spinal cord and which residual circuits support the plasticity. This knowledge can optimize how we target electrical stimulation to induce SCAP. Multiple methods of motor cortex and cervical spinal cord stimulation have been proven to be safe, so these mechanistic studies can be translated quickly to efficacy trials.
Transactions
| Action | Federal | Non-federal | Date |
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| Amendment | $742,705 | $0 | |
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| Amendment | $504,321 | $0 | |
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| Amendment | $504,321 | $0 | |
| Amendment | $550,365 | $0 | |
| Original award | $550,365 | $550,365 |
Show all 19
Subawards
| Subrecipient | Amount | Awarded |
|---|---|---|
| The Bronx Veterans Medical Research Foundation, Inc. | $204,701 | |
| The Bronx Veterans Medical Research Foundation, Inc. | $204,701 | |
| Weill Medical College Of Cornell University | $97,244 | |
| Weill Medical College Of Cornell University | $97,244 | |
| Icahn School Of Medicine At Mount Sinai | $55,815 | |
| The Bronx Veterans Medical Research Foundation, Inc. | $204,701 | |
| Icahn School Of Medicine At Mount Sinai | $40,179 | |
| The Bronx Veterans Medical Research Foundation, Inc. | $149,138 |
Quick answers
Who received award R01NS124224?
R01NS124224 was awarded to The Trustees Of Columbia University In The City Of New York by National Institute of Neurological Disorders and Stroke (National Institutes of Health) on September 10, 2021.
How much is award R01NS124224 worth?
$6,177,819 has been obligated on R01NS124224: $5,070,201 in federal funding and $1,107,618 in non-federal funding.
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