2014 Volume 22 Pages 93-103
For individuals with severely compromised motor functions, personal computers are indispensable tools that help ensure vital communications and promote social participation. Their machines come equipped with special pointing devices that use orthogonal scanning software and have a simple on/off switch. But, this necessitates us to first determine several operational parameters on a trial/error basis. Therefore, we proposed a parameter determination method using the measured response time of individual users. Subsequently, we attempted to validate the efficacy of the parameter determination through experiments using both healthy volunteers and those with motor disabilities. Consequently, the optimum values were verified to be effective for decreasing operation times without increasing their total number on average.