Evaluation methodology for eye-trackers as alternative access device for people with cerebral palsy
The procedures for evaluating alternative computer access systems are neither rigorous, systematic nor formal. We present a methodology to evaluate the user-computer interaction, based on three metrics, when people with cerebral palsy (CP) use eye- trackers as an alternative access device. We valida...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/170803 |
| Acceso en línea: | http://hdl.handle.net/10261/170803 |
| Access Level: | acceso abierto |
| Palabra clave: | ley de Fitts Alternative access parálisis cerebral Eye-trackers valoración Evaluación Methodology eye-trackers Acceso alternativo Fitts’ Law Cerebral palsy Assessment Evaluation Metodología |
| Sumario: | The procedures for evaluating alternative computer access systems are neither rigorous, systematic nor formal. We present a methodology to evaluate the user-computer interaction, based on three metrics, when people with cerebral palsy (CP) use eye- trackers as an alternative access device. We validated the methodology by comparing three commercial eye-trackers with nine participants seriously affected by CP. The results indicate that the calibration is a very critical process in these scenarios because of the high rate of calibration failures measured. The participants with CP also have a high click error rate, indicating that using eye- trackers to reach an object on the screen is a complex process for these levels of disability. The click times are similar between all eye-trackers and participants. This study is not intended to discourage the use of eye-trackers in the population with CP, but to establish methodological guidelines for the effective evaluation of commercial devices, which can be an interesting alternative to computer access for this population. |
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