Auditory Sensory Substitution Is Intuitive & Automatic along with Texture StimuliNature #Date_OfAugust 14, 2019
We show that intuitive SS sounds can be matched to the correct images by naive sighted participants just as well as by intensively-trained participants.
If intrinsic mappings are included in the sensory substitution device encoding, they may allow participants to perform sensory substitution tasks without any training, effort, or knowledge of the device encoding.
Therefore, participants with no knowledge about the vOICe device may in principle be able to use crossmodal correspondences to naively match images with their correct vOICe sounds.
Figure 3: Data from images encoded into vOICe sounds and tested on sighted naive ( N = 5 to 7) and trained participants ( N = 5).
Figure 6: Data and images from matching vOICe sounds and tactile patterns tested on both naive and trained participants.
Results Blind participants performed above chance (33%) both before and after training at matching vOICe sounds to the tactile patterns.
Entirely naive participants were found to match vOICe sounds to images significantly above chance (Expt.
The intuitive interpretation of vOICe sounds was shown to be due to intrinsic crossmodal mappings associated with the vOICe encoding scheme by generating significant decrements in matching performance when the vOICe encoding scheme was reversed (Expt.
In particular, the matching of engineered SS audio-visual mappings to intrinsic sensory mappings is important to improving the intuitiveness of sensory substitution.
Participants performed a bimodal matching task of the same design as the original (detailed above) but with different encoding schemes to test the value of different crossmodal mappings.
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