Article

We examined the effects of visual rehabilitation, including a chromatic luminance
discrimination program and a fixation training program, on a 6-yr-old boy with
severe visual impairment. Single-subject ABA and AB designs were used. The
programs were conducted 2x/wk and included 6 to 7 sessions for the baseline phase
and 10 to 11 sessions for the intervention phase. Play was integrated into the
visual training programs. Goggle visual evoked potential (VEP) testing was used
to evaluate neural activity in the primary visual cortex. Correct responses
increased and response times were shortened after training in luminance
discrimination. The total and maximum fixation time also improved, as did P100
latency and amplitude of VEPs. While walking, the boy was able to detect
obstacles he had not noticed before training. The results indicate the value of
visual training and the possibility of brain plasticity in a child with severe
visual impairment.
CI - Copyright (c) 2013 by the American Occupational Therapy Association, Inc.
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Langue : ANGLAIS