We evaluated the states of consciousness of seven persons who had sustained a severe head injury, and describe the behavioural manifestations associated with four treatment strategies. The subjects were between the ages of 19 and 55 and were recruited from both acute and long-term care facilities; all were in an altered state of consciousness. The severity of the injury was measured by time in coma, the scores on the Glasgow Coma Scale [1] and the Coma Near Coma Scale [2]. Structured interventions consisted of visual, auditory, olfactory, gustatory and tactile stimulation; behaviour was measured using the Disability Rating Scale [3, 4] and a portion of the Levels of Cognitive Functioning Scale [5]. Sensory-motor indications were recorded using a questionnaire developed by Freeman [6] and a quality-of-life instrument, developed for use with individuals having multiple disabilities [7], was adapted for the purpose of this study. Our results suggest that the use of structured interventions in the first 24 months following severe head injury is associated with a trend towards improved auditory and visual skills performance, manual performance, swallowing and language. Whereas initially no subject had any form of verbalization, by the final evaluation five subjects had some form of communication, either verbal or non-verbal.