Mechanisms Underlying the Neuromodulation of Spinal Circuits for Correcting Gait and Balance Deficits after Spinal Cord Injury.
Neuron
; 89(4): 814-28, 2016 Feb 17.
Article
en En
| MEDLINE
| ID: mdl-26853304
Epidural electrical stimulation of lumbar segments facilitates standing and walking in animal models and humans with spinal cord injury. However, the mechanisms through which this neuromodulation therapy engages spinal circuits remain enigmatic. Using computer simulations and behavioral experiments, we provide evidence that epidural electrical stimulation interacts with muscle spindle feedback circuits to modulate muscle activity during locomotion. Hypothesis-driven strategies emerging from simulations steered the design of stimulation protocols that adjust bilateral hindlimb kinematics throughout gait execution. These stimulation strategies corrected subject-specific gait and balance deficits in rats with incomplete and complete spinal cord injury. The conservation of muscle spindle feedback circuits across mammals suggests that the same mechanisms may facilitate motor control in humans. These results provide a conceptual framework to improve stimulation protocols for clinical applications.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Traumatismos de la Médula Espinal
/
Trastornos de la Sensación
/
Trastornos Neurológicos de la Marcha
/
Equilibrio Postural
Tipo de estudio:
Etiology_studies
/
Guideline
Límite:
Animals
Idioma:
En
Revista:
Neuron
Asunto de la revista:
NEUROLOGIA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Suiza