Abstract
Neural plasticity, a potential mode of managing various neurologic diseases, can be modulated via bursts of neurotransmitter release, including norepinephrine and acetylcholine. One method to do so is by electrically stimulating the vagus nerve while performing a specific task. Vagus nerve stimulation (VNS) has proven to be a viable intervention for conditions, including treatment-resistant epilepsy, depression, and, more recently, motor recovery after ischemic stroke. This article aims to explain the neurobiologic mechanism of VNS-induced cortical plasticity. It highlights both animal and human studies of VNS therapy, with a primary focus on recovery after stroke, traumatic brain injury, and spinal cord injury recovery. Furthermore, we discuss the long-term effects of VNS therapy, suggest potential solutions to overcome challenges encountered in previous studies, and elaborate on future directions in the field.
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