The Journal of Rehabilitation Research and Development, published quarterly, is a scientific rehabilitation engineering, research and development publication in the multidisciplinary field of disability rehabilitation. General priority areas are: Prosthetics and Orthotics; Spinal Cord Injury and Related Neurological disorders; Communication, Sensory and Cognitive Aids; and, Gerontology. The Journal receives submissions from sources within the United States and throughout the world. Only original scientific rehabilitation engineering papers will be accepted. Technical Notes describing preliminary techniques, procedures, or findings of original scientific research may also be submitted. Letters to the Editor are encouraged. Books for review may be sent by authors or publishers. The Editor will select reviewers.