Sarasate Azcona, Iosune
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Sarasate Azcona
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Iosune
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Estadística, Informática y Matemáticas
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Publication Open Access Mental workload of guiding devices: directional pulling forces, vibrotactile stimuli and audio cues(ACM, 2024-06-19) Donkov Bogdanov, Stefan; Elizondo Martínez, Sonia; Ezcurdia Aguirre, Íñigo Fermín; Sarasate Azcona, Iosune; Marzo Pérez, Asier; Estadística, Informática y Matemáticas; Estatistika, Informatika eta MatematikaAsymmetric vibrations are known to produce a pulling sensation when stimulating the human hand. This effect has been exploited as a means of guidance. We conducted a user study to compare asymmetric vibrations, simple vibration, and sound cues for guidance in terms of task completion time and mental workload. Mental workload was evaluated (N=22) using the dual-task paradigm with a Stroop test and arithmetic operations test as secondary tasks. Audio cues improved significantly the task completion time for baseline and stroop tasks compared to the other methods. No significant differences were found for the reaction time for the guiding task. The use of audio cues was evaluated as the less mentally demanding guiding method on the NASA-TLX questionnaire.Publication Open Access PointerVol: a laser pointer for swept volumetric displays(ACM, 2024-10-11) Fernández Ortega, Unai Javier; Sarasate Azcona, Iosune; Ezcurdia Aguirre, Íñigo Fermín; López-Amo Ocón, Manuel; Fernandez Fernandez, Ivan; Marzo Pérez, Asier; Estadística, Informática y Matemáticas; Estatistika, Informatika eta MatematikaA laser pointer is a commonly used device that does not require communication with the display system or modifications on the applications, the presenter can just take a pointer and start using it. When a laser pointer is used on a volumetric display, a line rather than a point appears, making it not suitable for pointing at 3D locations. PointerVol is a modified laser pointer that allows users to point to 3D positions inside a swept volumetric display. We propose two PointerVol implementations based on timing and distance measurements, we evaluate the pointing performance using them. Finally, we present other features such as multi-user pointing, line patterns and a multi-finger wearable. PointerVol is a simple device that can help to popularize volumetric displays, or at least to make them more usable for presentations with true-3D content.