The purpose of this study is to examine the relationship between common clinical assessments and measurements of the function of brain-spinal cord-muscle connections. For examining brain-to-muscle pathways, we use a transcranial magnetic stimulator. This stimulator produces a magnetic field for a very short period of time and indirectly stimulates brain cells with little or no discomfort. We hope that the results of this training study will help us in developing therapy strategies for individuals, better understanding clinical assessments, and understanding treatments that aim to improve function recovery in people with SCI.

There are 2 aims for this study. The purpose of the first is to examine the relationship between assessments commonly used in therapy and doctor's offices (clinical assessments) and measurements of the function of brain-spinal cord- muscle connections. This will require 2 visits, and each visit will last approximately 2 hours.

The purpose of the second aim is to examine the effects of training on brain-spinal cord-muscle response. This will require 30 visits, and each visit will last approximately 1.5 hours.