The involvement of sensory-motor factors in language recovery following left-hemisphere brain damage was investigated. GB, a right-handed male, three years post-onset of conduction jargonaphasia, was given a psychomotor treatment aimed at improving his speech-related sensory-motor function. Repeated language assessments showed marked improvements in a wide range of lexical language processes, but not in repetition or naming. Of special significance was the substantial reduction in jargon production and improved sublexical phonological targeting. It is suggested that the sensory-motor factors affecting GB’s jargon-aphasia include feedback mechanisms and the modulation of low-level activity of the CNS.