Fig 1.
Schematic showing the experiment set-up.
Participants were seated on the pressure mat (yellow) which was attached to a chair (blue). The pressure mat consisted of an array of 16 * 16 pressure sensors which is depicted by the example heat map (black indicates no pressure; white indicates maximum pressure). The linear velocity of the robot avatar was determined by the distribution of pressure in the front and back halves of the array. The angular velocity was determined by the distribution of pressure in the left and right halves of the array. The computer screen displayed the virtual environment. The robot moved around a room and had a white rectangle on it to indicate its front.
Fig 2.
Example data from three participants showing the response time and success (coloured data points: green for success and red for failure) as a function of trial number.
Each participant had a different experimental trial duration based on their baseline performance, indicated by the horizontal black dotted line. All three participants showed improved performance, indicated by more successful trials (green circles) as the experiment progressed.
Fig 3.
Mean (A) success frequency, (B) trial duration, (C) motivation, and (D) enjoyment as a function of Block Number.
Error bars show standard error of the mean.
Fig 4.
Success frequency in the three Success Frequency Groups.
Bars show the mean; Coloured dots show the data for individual participants.
Fig 5.
Play duration as a function of (A) experimental condition and (B) success frequency.
Trials completed as a function of (C) experimental condition and (D) success frequency. Each data point is an individual participant, colour-coded according to the success frequency group that they were in.