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Static Postural Stability is Normal in Dyslexic Children

Brian Brown is a senior scientist at Smith-Kettlewell Institute of Visual Sciences, San Francisco. He obtained his PhD in Optometry/Psychology from the University of Melbourne, Australia. Address: Dr. Brian Brown, Smith-Kettlewell Institute of Visual Sciences, 2232 Webster Street, San Francisco, CA 94115.

Gunilla Haegerstrom-Portnoy, OD

Gunilla Haegerstrom-Portnoy is a senior scientist at Smith-Kettlewell. She received her OD in Optometry from the University of California, Berkeley.

Jeannine Herron, PhD

Jeannine Herron is an associate research psychologist, Langley Porter Psychiatric Institute, University of California, San Francisco. She received her PhD in anatomy from Tulane University.

David Galin, MD

David Galin is an associate professor of psychiatry, Langley Porter Psychiatric Institute. He received his MD in medicine from Albert Einstein College.

Charles D. Yingling, PhD

Charles D. Yingling is an assistant adjunct professor of medical psychology at Langley Porter He received his PhD in biology from Rice University.

Marilyn Marcus, PhD

Marilyn Marcus is a clinical psychologist at the Veterans Administration Medical Center, Los Angeles. She received her PhD in clinical psychology from the University of Pittsburgh.

Vestibular dysfunction has been hypothesized to play a role in the genesis of dyslexia. The vestibular system consists of two components; the semi-circular canals, which detect rotational accelerations of the head, and the otoliths, which detect linear accelerations of the head. Postural stability is dependent upon the integrity of the otolith systems, as well as upon cerebellar and spinal function. We report the results of an experiment on 15 dyslexics and 23 carefully matched control subjects, examining their ability to maintain a standing posture with eyes open and closed, and with standard and tandem foot placement. There are no differences between the groups under any of the conditions tested. Further, the groups do not differ in the way in which they use visual information to maintain their posture.

Journal of Learning Disabilities, Vol. 18, No. 1, 31-34 (1985)
DOI: 10.1177/002221948501800107


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