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RERC on AAC

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    • Archives (2014-2020)
      • R1: Brain-computer interface
      • R2: Supporting transition to literacy
      • R3: Visual cognitive processing demands
      • D1: Multimodal technologies
      • D2: Interactive video visual scene displays
      • D3: Smart Predictor app
      • D4: Cognitive demands checklist
  • Research
    • R1: Video Visual Scene Display (VSD) Intervention
    • R2: AAC Literacy Decoding Technology
      • Design of the transition to literacy (T2L) decoding feature
    • R3: Motion to improve AAC user interface displays
    • Consumer & Technology Forums
      • Communication with Direct Support Professionals: The Experiences of AAC Users (2024)
      • The participation of people who rely on AAC in the pre-service preparation of communication, education, and medical professionals (2023)
      • The patient-provider experiences of people with CP who use AAC (2022)
  • Development
    • D1: Access Assistant Software to Improve Alternative Access Services
    • D2: Smart Select: a new switch access method
    • D3: mTraining in AAC for Communication Partners
  • Training
    • T1: Mentored Research and Lab Experiences
    • T2: Rehabilitation Engineering Student Capstone Projects
    • T3: Student Research and Design Challenges
    • T4: Doctoral Student AAC Research Think Tank
    • T5: Webcasts & Instructional Modules
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R3) Investigating the visual cognitive processing demands of AAC interfaces (2014-2020)

r3 eyetracking
Team Leaders: J. Light, K. Wilkinson, D. Beukelman,  S. Fager, T. Jakobs (Invotek), D. Hershberger (Saltillo)
Katie has a genetic disorder resulting in motor, hearing and vision impairments. She has a tracheotomy and requires AAC to express herself. Her high school team introduced her to AAC technology but she is struggling to use it effectively. By the time she locates the messages she wants to communicate, she has missed her opportunity to participate in class. She has to concentrate so much on finding vocabulary on her AAC device that she frequently misses what her teachers are saying. Are there better ways to design the AAC interface to reduce the processing demands and enhance Katie’s performance so that she can maximize her education?
Challenge: Use of AAC technologies presents multiple and unique cognitive processing demands. Individuals with complex communication needs (CCN) must formulate the message and hold it in working memory, while simultaneously recalling where target concepts are located, navigating to the target display, locating the target symbol(s) within the display, and inhibiting  interference from other display elements, all while attending to the ongoing demands of interactions at school, at work, at home, or in the community.
Goal: The goal of this project is to investigate the visual cognitive processing demands of AAC displays to optimize the human computer interface and thereby enhance communication performance.
This project will involve a series of studies using eye tracking research methods to investigate visual processing demands with different population groups. The first set of studies will investigate ways to design AAC displays to reduce the demands of navigation and improve performance. Specifically, we will investigate the effects of the orientation and location of menu bars (i.e., vertical left of display, vertical right of display, horizontal top, horizontal bottom). We will use eye tracking research methods to measure the latency and duration of eye gaze to features of the AAC display. These data will be used to design AAC displays that maximize immediate allocation of visual attention to important elements and that minimize attention to distractions, thereby enhancing performance.
Additional independent variables to improve the design of AAC displays will be identified and investigated in a third set of studies pending the results of these first two sets of studies.
Resources
Beukelman, D. R., Hux, K., Dietz, A., McKelvey, M., & Weissling, K. (2015). Using visual scene displays as communication support options for people with chronic, severe aphasia: A summary of AAC research and future research directions. Augmentative and Alternative Communication, 31, 234-245.
Brown, J., Thiessen, A., Beukelman, D., & Hux, K. (2015). Noun representation in AAC grid displays: Visual attention patterns of people with traumatic brain injury. Augmentative and Alternative Communication, 31, 15-26.
Wilkinson, K. M., & Mitchell, T. (2014). Eye tracking research to answer questions about augmentative and alternative communication assessment and intervention. Augmentative and Alternative Communication, 30, 106-119.
Thiessen, A., Beukelman, D., Hux, K., & Longenecker, M. (2016). A comparison of the visual attention patterns of people with aphasia and adults without neurological conditions for camera-engaged and task-engaged Visual Scenes. Journal of Speech, Language, and Hearing Research, 59, 290-301.

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Recent Posts

  • The first word in accessibility is “access” (Regan, 2025)
  • Alternative ways to access AAC technologies (Ramirez, 2025)
  • Future of AAC technologies: priorities for inclusive innovation (Williams & Holyfield, 2025)
  • Nothing about AAC users without AAC users: a call for meaningful inclusion in research, technology development, and professional training (Blasko et al., 2025)
  • To include us in our own worlds: AAC is not optional (Koloni, 2025)

Recent Publications and Presentation

Patrick Regan and a quote from his article in the AAC journal

The first word in accessibility is “access” (Regan, 2025)

Patrick Regan (2025) is President-Elect of USSAAC, and he also plays leadership roles in ISAAC, and in outreach programs for the Bridge School. Patrick experiences Spinal Muscular Atrophy, and has used a wide variety of AAC to communicate. In this paper, he describes “access challenges that I have experienced as someone who uses AAC, how my team and I have resolved them, and what challenges I face now.”

Now free at the AAC journal
https://doi.org/10.1080/07434618.2025.2513912

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The contents of this website were developed under a grant from the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR grant number 90REGE0014) to the Rehabilitation Engineering Research Center on Augmentative and Alternative Communication (RERC on AAC). NIDILRR is a Center within the Administration for Community Living (ACL), Department of Health and Human Services (HHS). The contents of this website do not necessarily represent the policy of NIDILRR, ACL, or HHS, and you should not assume endorsement by the Federal Government.