Abnormal central motor function Abnormality of central motor conduction 2012-08-18T04:41:05Z Any anomaly of the conduction of motor nerve impulses in the central nervous system. UMLS:C4023055 Nerve conduction velocity in the central motor pathways of the brain and spinal cord can be studied by methods including transcutaneous electrical stimulation of the cortex, cervical cord, thoracic cord and conus medullaris and determination of motor latencies to various muscles. This measure is thought to represent conduction in large diameter fibers in the corticospinal tracts. HP:0012079