Usability of Eye-Gaze Controlled Computers in Sweden: A Total Population Survey

The psychosocial impact of eye-gaze assistive technology on everyday life of children and adults

PURPOSE

This study investigates the psychosocial impact of eye-gaze assistive technology (EGAT) in both children and adults with long-term experience using eye-gaze assistive technology in everyday life, as well as the psychosocial impact as related to duration of use.

METHODS

In this descriptive comparative study, 34 adult and 27 child EGAT users participated in a structured individual interview using the Psychosocial Impact of Assistive Devices Scale (PIADS).

RESULTS

The participants' age ranged from 5-74 years, 50% were female and 52% had been diagnosed with cerebral palsy. The EGAT had a positive psychosocial impact on competence, adaptability, and self-esteem among adult and child users. Competence was the only subscale with a higher value for adults (p = 0.038), compared to children. The items with the highest impact for the psychosocial aspects were quality of life, ability to participate, and self-esteem. The adults had longer duration of use than children, but for high-, medium-, and low-duration users, the device showed a positive psychosocial impact.

CONCLUSIONS

Participants considered EGAT to have high positive impacts for participation and quality of life. The study adds new knowledge in that high positive psychosocial impact may be found even among low-duration users of EGAT, which is important to consider for service providers.

Parents' Perceptions of Eye-Gaze Technology Use by Children With Complex Communication Needs

PURPOSE

Some preschool students with complex communication needs explore eye-gaze computer technology (EGCT) and adopt computer-based augmentative and alternative communication (AAC). The objective of this study was to follow preschool explorers of EGCT who are now school aged to describe the children's use of technology and parents' perceptions of its utility for communication, participation, or leisure.

METHOD

Ten parents completed survey questions by Internet and phone and reported their perceptions of nine children's effectiveness in the use and acceptance of AAC and the support they received in implementing technology. The results are reported as a descriptive study.

RESULTS

All children in this research continue to use AAC technology in school and most at home. Many children who tried and obtained EGCT while in preschool continue to use that technology. Most parents agreed that the children understood how to use the devices, which enhanced the children's communication, and that the parents received sufficient support. Most children were limited in their use of the devices for leisure and control of their environments.

CONCLUSIONS

Computer-based AAC for school-aged children who trialed it when they were in preschool appears to be a powerful means for them to communicate and participate. However, the technology appears not to be used to its full capabilities to support the children's agency to control environments and to pursue leisure. Teams may want to consider how to support children in using their AAC devices to meet multiple needs. The study was limited by its small sample size and its descriptive nature. Additional research on this subject is needed.

Increasing participation in computer activities using eye-gaze assistive technology for children with complex needs

PURPOSE

Eye-gaze assistive technology offers children with severe motor and communication difficulties the opportunity to access and control a computer through eye movements. The aim of this study was to examine the impact of eye-gaze assistive technology intervention on participation in computer activities and technology usability among children with complex needs in Taiwan.

MATERIALS AND METHODS

This study involved a multiple baseline design across individuals. The participants were four children aged three to six years with severe motor and communication difficulties and low eye-control skills. The six-month intervention consisted of two collaborative team meetings and 12 individual supports to facilitate the use of eye-gaze assistive technology at home or in educational environments. Participation in computer activities (diversity, frequency, and duration) was repeatedly measured through a computer use diary. Other outcomes included assessments of goal achievements and parents/teachers' ratings on children's performance in computer activities.

RESULTS

The young children increased the diversity of their computer activities and their frequency and duration of computer use from baseline to the intervention phase. The children attained six of eight predefined goals related to play, communication, and school learning. Parents and teachers perceived the children's changes in performance as meaningful.

CONCLUSION

This study strengthens the evidence that eye-gaze assistive technology is useful in everyday contexts for children with complex needs in Taiwan. The findings add knowledge that children with weak eye-control skills increased participation in computer activities as a result of the eye-gaze assistive technology. Implications for RehabilitationEye-gaze assistive technology (EGAT) as an access method to control a computer can provide opportunities for children with severe motor and communication difficulties to participate in computer activities.Children with severe motor and communication difficulties and low eye-control skills with sufficient practice can learn to use EGAT for communication and learning, with support from stakeholders and collaborative service.EGAT could be introduced for children with complex needs at early ages as a means of using computers for play, communication, and school learning, which could be helpful for later education and learning.Stakeholders in educational environments could include EGAT in educational computer systems so that pupils with severe motor and communication difficulties could interact with a computer, thereby enhancing their engagement and learning.

Eye movements and stress during eye-tracking gaming performance in children with dyskinetic cerebral palsy

AIM

This study aimed to explore eye movements and stress during eye-tracking gaming performance in children with dyskinetic cerebral palsy (CP) compared with typically developing children, and associations between eye-tracking performance, eye movements, stress, and participants' characteristics.

METHOD

This cohort study included 12 children with dyskinetic CP aged 5 to 12 years (mean age 8 years 7 months, standard deviation [SD] 2 years 3 months) and 23 typically developing children aged 5 to 13 years (mean age 9 years 0 months, SD 2 years 7 months). Participants played 10 eye-tracking games. Tobii X3-120 and Tobii Pro Lab were used to record and analyse eye movements. Stress was assessed through heart rate variability (HRV), recorded during rest, and eye-tracking performance using the Bittium Faros360° ECG Holter device. Eye-tracking performance was measured using gaming completion time. Fixation and saccade variables were used to quantify eye movements, and time- and frequency-domain variables to quantify HRV. Non-parametric statistics were used.

RESULTS

Gaming completion time was significantly different (p < 0.001) between groups, and it was negatively correlated with experience (r_s  = -0.63, p = 0.029). No significant differences were found between groups in fixation and saccade variables. HRV significantly changed from rest to eye-tracking performance only in typically developing children and not in children with dyskinetic CP.

INTERPRETATION

Children with dyskinetic CP took longer to perform the 10 games, especially the inexperienced users, indicating the importance of the early provision of eye-tracking training opportunities. It seems that eye-tracking tasks are not a source of increased stress and effort in children with dyskinetic CP.

WHAT THIS PAPER ADDS

Participants with dyskinetic cerebral palsy (CP) took twice as long to perform 10 eye-tracking games than typically developing peers. Participants with dyskinetic CP with previous eye-tracking experience performed the games faster. Fixation and saccade variables were not significantly different between children with and without dyskinetic CP. Heart rate variability showed no differences between rest and performance in participants with dyskinetic CP. Gross Motor Function Classification System, Manual Ability Classification System, and Viking Speech Scale levels were not correlated to the eye movements or stress variables.

The Impact of Eye-gaze Controlled Computer on Communication and Functional Independence in Children and Young People with Complex Needs - A Multicenter Intervention Study

INTRODUCTION

Children and young people with complex needs (severe motor impairments and without speech) have few opportunities to use alternative devices for communication. Eye-gaze controlled computers (EGCCs) might provide individuals with complex needs increased opportunities for communication and participation in society.

OBJECTIVE

To investigate the impact of EGCCs on communication, functional independence and participation in activities in children and young people with complex needs.

METHODS

A multicenter intervention study during seven months, measuring outcomes with or without EGCC at four time points, was conducted in Sweden, Dubai, and in USA. Seventeen participants (aged 3-26 years, diagnosis e.g. cerebral palsy, Rett syndrome) were provided with EGCC and services from an Assistive Technology center to implement EGCC in school and/or at home.

RESULTS

Participants significantly increased their expressive communication skills and functional independence with EGCC compared to baseline. All but one (16 of 17) increased their activity repertoire and computer use with EGCC. With EGCC, participation in computer activities averaged 4.1 performed activities (e.g. communication, play), with a duration of 70 minutes/day and a frequency of 76% of days.

DISCUSSION

The study strengthened the research evidence that EGCC can be an effective intervention in daily life for children and young people with complex needs. Communication and independence, common goals of intervention, were shown to be relevant EGCC outcomes.

Communicative Interaction with and without Eye-Gaze Technology between Children and Youths with Complex Needs and Their Communication Partners

Use of eye-gaze assistive technology (EGAT) provides children/youths with severe motor and speech impairments communication opportunities by using eyes to control a communication interface on a computer. However, knowledge about how using EGAT contributes to communication and influences dyadic interaction remains limited. Aim: By video-coding dyadic interaction sequences, this study investigates the impacts of employing EGAT, compared to the Non-EGAT condition on the dyadic communicative interaction. Method: Participants were six dyads with children/youths aged 4–19 years having severe physical disabilities and complex communication needs. A total of 12 film clips of dyadic communication activities with and without EGAT in natural contexts were included. Based on a systematic coding scheme, dyadic communication behaviors were coded to determine the interactional structure and communicative functions. Data were analyzed using a three-tiered method combining group and individual analysis. Results: When using EGAT, children/youths increased initiations in communicative interactions and tended to provide more information, while communication partners made fewer communicative turns, initiations, and requests compared to the Non-EGAT condition. Communication activities, eye-control skills, and communication abilities could influence dyadic interaction. Conclusion: Use of EGAT shows potential to support communicative interaction by increasing children’s initiations and intelligibility, and facilitating symmetrical communication between dyads.