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. Author manuscript; available in PMC: 2019 Aug 1.
Published in final edited form as: J Neural Eng. 2018 Aug 1;15(4):046007. doi: 10.1088/1741-2552/aabc9a

Figure 5.

Figure 5

Mean (± SD) percentage correct identifications of the 27 objects based on electrotactile feedback for eight subjects over five days (black trace). There was a significant (P< 0.001) effect of training day on percentage correct identifications. Post hoc analyses indicated significant difference between day 1 and day 4 and day 1 and day 5 (* P < 0.05). The green trace shows the performance of the machine-learning algorithm trained on the same signals delivered to one of the subjects. The red dashed line depicts the mean performance of three subjects using their own hand to identify the objects and the black dashed line indicates chance level.