Abstract
This is a longitudinal case study of one profoundly retarded girl. I educated her for 12 months since she was 11 years old. Her head raising activity and posture maintaining were observed. She raised her head on various situations based on her auditory and tactual perception. When she first tried to raise her head, she fell down backward. But later, she raised it upright. She would support her body on the surface of a desk or on the ground using her elbows and feet to maintain her upright posture. She maintained her posture utilizing information about the outside world through auditory and tactual sensory systems. It was shown that understanding the relations between posture and the outside world is essential when we educate profoundly handicapped children.
