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Sensory Motor Problems
Those people with fragile X syndrome, who have difficulties in vestibular or proprioceptive processing, may not have a good sense of themselves in space. Their posture, eye movements, and gait may be unusual. They may have a number of self-stimulating behaviors (e.g. hand flapping, rubbing the hands together, chewing on clothing on clothing or skin, rocking) that provide them with additional feedback from their senses. These movements seem to have a calming and organizing influence on the sensory system. All of these behaviors may be connected to anxiety as well. Motor planning problems may be seen in some children and adults' difficulty with learning a new motor skill or sport. Motor planning is the ability to think through a new task requiring body movements and then execute that movement. Fine motor skills are often delayed in children with fragile X syndrome. Overall, fine motor development seems to be in keeping with cognitive level. In addition to the impact of the cognitive level, low muscle tone and joint laxity contribute to a lack of strength and dexterity in grip and movement for drawing and writing. Children with extreme tactile sensitivity may not like the feeling of a pencil or marker in their hands. Visual defensiveness may cause children to avoid looking at the page as they are coloring or writing, further impairing the results. Gail Harris-Schmidt, Ph.D., CCC-SLP
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Sensory motor problems may affect a number of areas involving movement in space.
Processing problems with vestibular information may cause difficulties with posture, balance, and muscle tone. Proprioception involves the sense of where the body is in space. Some
persons with difficulty in this area may have trouble with gait, possibly toe walking. Fine motor problems may be caused by difficulties in motor planning and sequencing of movements.
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