3D sound interactive environments for problem solving
Audio-based virtual environments have been increasingly used to foster cognitive and learning skills. A number of studies have also highlighted that the use of technology can help learners to develop affective skills such as motivation and self-esteem. This study presents the design and usability of 3D interactive environments for children with visual disabilities to help them to solve problems related with the Chilean geography and culture. We introduce AudioChile, a virtual environment that can be navigated through 3D sound to enhance spatiality and immersion throughout the environment. 3D sound is used to orientate, avoid obstacles, and identify the position of diverse personages and objects within the environment. We have found during usability evaluation that sound can be fundamental for attention and motivation purposes during interaction. Learners identified and differentiated clearly environmental sounds to solve everyday problems, spatial orientation, and laterality.
We have acquired in vivo photoacoustic images of gastrointestinal tracts in rats using recently developed clinical photoacoustic/ultrasound imaging system. The result can be used to investigate motility of gastrointestinal tracts in clinical studies.