Synthetic synaesthesia and sensory substitution |
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| Authors: | Michael J Proulx |
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| Institution: | 1. NeuroImaging Laboratory, University of Pittsburgh, Pittsburgh, PA, USA;2. Sensory Substitution Laboratory, University of Pittsburgh, Pittsburgh, PA, USA;3. UPMC Eye Center, Ophthalmology and Visual Science Research Center, Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA;4. Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA;5. McGowan Institute for Regenerative Medicine, University of Pittsburgh and UPMC, Pittsburgh, PA, USA;6. Louis J. Fox Center for Vision Restoration, University of Pittsburgh and UPMC, Pittsburgh, PA, USA;7. Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA;8. Center for the Neural Basis of Cognition, University of Pittsburgh and Carnegie Mellon University, Pittsburgh, PA, USA;9. Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Republic of Korea;10. Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Republic of Korea;11. Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea |
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| Abstract: | Visual information can be provided to blind users through sensory substitution devices that convert images into sound. Through extensive use to develop expertise, some blind users have reported visual experiences when using such a device. These blind expert users have also reported visual phenomenology to other sounds even when not using the device. The blind users acquired synthetic synaesthesia, with visual experience evoked by sounds only after gaining such expertise. Sensorimotor learning may facilitate and perhaps even be required to develop expertise in the use of multimodal information. Furthermore, other areas where expertise is acquired in dividing attention amongst cross-modal information or integrating such information might also give rise to synthetic synaesthesia. |
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