A corrective-feedback system for helping a person with multiple disabilities during indoor travel

Physical Rehabilitation in Leprosy

Physical Rehabilitation in Leprosy

Automatic feedback to promote safe walking and speech loudness control in persons with multiple disabilities: two single-case studies

OBJECTIVE

Assessing automatic feedback technologies to promote safe travel and speech loudness control in two men with multiple disabilities, respectively.

METHOD

The men were involved in two single-case studies. In Study I, the technology involved a microprocessor, two photocells, and a verbal feedback device. The man received verbal alerting/feedback when the photocells spotted an obstacle in front of him. In Study II, the technology involved a sound-detecting unit connected to a throat and an airborne microphone, and to a vibration device. Vibration occurred when the man's speech loudness exceeded a preset level.

RESULTS

The man included in Study I succeeded in using the automatic feedback in substitution of caregivers' alerting/feedback for safe travel. The man of Study II used the automatic feedback to successfully reduce his speech loudness.

CONCLUSION

Automatic feedback can be highly effective in helping persons with multiple disabilities improve their travel and speech performance.

Supporting independent indoor travel of people with blindness and intellectual disability with reduced frequencies of auditory cues

This study evaluated the feasibility of supporting independent indoor travel using reduced frequencies of auditory cues with two persons having total blindness and profound intellectual disability. For these persons, who had acquired satisfactory travel performance with cues occurring every 8 sec., the cue frequencies were reduced to one-half or one-third of the original level. Analysis showed that both participants could manage accurate travel under the new cue conditions, even though their travel time (efficiency) seemed negatively affected. Implications of the findings were discussed.

Indoor travel and simple tasks as physical exercise for people with profound multiple disabilities

2 to 4 30-min. periods of indoor travel and simple tasks were arranged daily as physical exercise for two women with profound mental retardation, deafness, and profound visual impairment. The questions were whether (a) the women could manage this fairly extensive exercise regimen (over about 9 and 4.5 mo.) with support technology and only minimal staff supervision and (b) the exercise could affect aspects of the women's physical condition. Data indicated that both women could successfully manage the exercise regimen with support technology, and the exercise seemed to have some beneficial effects on physical aspects such as bone metabolism and step width.