Look2Hook : The Impact of Menu Design and Input Device on Gaze-based Menu Selection

Sammanfattning: In this paper, an investigation of the impact of menu design and input device for gaze-based menu selection tasks is reported. The study investigates the usability, measured by effectiveness, efficiency, and user satisfaction, for gaze-based interaction in realistic, complex menu selection tasks. The study includes three different menu designs, a linear drop-down menu (L1), a radial dynamic menu (R1), and a semi-radial menu (R2), along with two different input devices, a unimodal input device using dwell-time (DT) and a multimodal input device using a combination of gaze and a manual switch (GMS). In a user study with nine test participants, the impact of menu design, input device, and navigation complexity on task completion time, accuracy rate, cognitive load, and quality of use ratings for menu selection tasks were investigated. The usability results confirmed the expectations of the advantages of radial menu designs, with the radial dynamic menu (R1) being better suited for gaze- based interaction than either the linear drop-down menu (L1) or semi-radial menu (R2). The usability results also confirmed the expectations regarding the input device, namely, the multimodal GMS input device was superior to the unimodal DT input device for gaze-based interaction.