Jul 29 (Mon) @ 3:00pm: "Beyond Functionality: Exploring Input, Experience, and Output in Assistive Technology Design," Atieh Taheri, ECE PhD Defense
Zoom Meeting - Meeting ID: 837 4668 9348 | Passcode: 483152
https://ucsb.zoom.us/j/83746689348?pwd=gygDXN1U9WbB8HQSZK5pxsGpmcjxca.1
Abstract
The design of assistive technology has traditionally focused on addressing the functional limitations associated with physical disabilities, often overlooking the holistic experience of using an object, tool, or application. This dissertation introduces a novel three-dimensional design space for accessible human-computer interaction that expands beyond this utilitarian approach. By integrating input methods, user experiences, and output modalities, this design space offers a comprehensive perspective for creating more inclusive and empowering technologies for people with motor impairments.
My research contributes to this multidimensional design space through a series of interconnected studies, each contributing to different dimensions while showcasing their interdependencies: 1) On the input axis, I present a hands-free video game controller based on facial expressions that allows individuals with motor impairments to play independently. This system not only provides users with severe motor impairments a novel input method that accommodates their current level of physical constraint but also enhances the overall gaming experience and social connectivity. I further explore AI-generated virtual companions and text-to-image generation tools, developing accessible interfaces for people with motor impairments through leveraging large language models. I demonstrate how advanced AI can be utilized to create more natural and engaging interfaces, ultimately empowering individuals with motor impairments to express their creativity in a more natural and effortless manner. 2) The experience axis is exemplified by our study on simulating walking in virtual reality for lifelong wheelchair users. This work provides crucial insights into designing immersive experiences that align with the mental models and emotional needs of users who have never walked, catering to unfulfilled desires for exploration and freedom of movement. 3) For the output axis, I present a system that provides haptic feedback to simulate clicking a computer mouse for users with severe hand motor impairments. This study demonstrates how sensory feedback can be provided through alternative means, emphasizing the tight coupling between input actions and output responses in creating a sense of agency and control. Methodologically, my research is anchored in the domains of human-computer interaction and accessibility studies. I employ an iterative and participatory design process that actively engages diverse stakeholders, including end users with motor impairments and technology designers. My evaluation methods include user experiments, in-depth interviews, and diary studies each tailored to the specific requirements of individual projects.
My holistic design space reveals important synergies and trade-offs across the three dimensions. For example, the choice of input method affects the type of experiences that can be created, which in turn influences the appropriate output modalities. Similarly, focusing on the desired user experience guides decisions about input and output design. This dissertation contributes to a more comprehensive understanding of accessible interaction design. By considering input, experience, and output as part of an integrated whole, my goal is to open new possibilities for creating technologies that not only overcome physical limitations but also enhance independence, creativity, and quality of life for people with motor impairments.
Bio
Atieh Taheri is a PhD candidate in Electrical and Computer Engineering at UC Santa Barbara, advised by Prof. Misha Sra. Atieh's interdisciplinary research focuses on developing accessible and inclusive technologies that enable individuals with disabilities to engage more fully with the digital world. Her scholarly pursuit is marked by a shift from conventional assistive technology design, adopting a holistic and inclusive design philosophy that extends beyond just functional capabilities. Her notable achievements include developing an innovative hands-free video game input technique, which won first place at the Student Game Competition Award for Innovative Interfaces at CHI 2021, and creating an accessible interface to enhance interactions with conversational AI agents, which received the People's Choice Best Poster Award at UIST 2023. Her technical expertise and deep understanding of accessibility's transformative power reflect her dedication to creating technologies that are inclusive for all.
Hosted by: Professor Misha Sra
Submitted by: Atieh Taheri <a_taheri@ucsb.edu>
