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Table 1 Displacement start time of each finger part

From: A method for using one finger to press three separate keys on a three-dimensional keyboard designed to be mounted on a mouse

  Tip DIP joint PIP joint MCP joint
Upper key
 y-axis start time (s)
 z-axis start time (s) 0.18 0.12 0.16
Middle key
 y-axis start time (s)
 z-axis start time (s) 0.068 0.062 0.067
Lower key
 y-axis start time (s) 0.064 0.11
 z-axis start time (s) 0.17 0.22