Letter Similarity Data Set Archive
Craig, J. (1979). A confusion matrix for tactually presented letters.
Perception & Psychophysics
Experimenter presented a confusion matrix for letter identification of vibrating tactile display of the Optacon, a reading aid for the blind. Stimuli were presented for between 4 and 100 ms.
Letters were generated on a 6 by 18 dot matrix. Image depicting the configuration of letters will be forthcoming.
Confusion matrices are available
. Each row represents a stimulus, and each column is a response.
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