2.3 Experiment
Procedure: Measurement of the short term memory of tilt perception (Figure 2)
Reproduction of 0°
First, we ordered subjects to memorize their perception of 0° for 1 minute. We then tilted the subjects to the right by 5° (R 5°) and asked them to evaluate this position for 1 minute. Finally, we had them reproduce the initial perception of 0° immediately, or 1, 3, 5 and 10 minutes later. We recorded tilt angle of their reported position. We also studied the left condition (L 5°) in the same manner.
Reproduction of R and L 5°
First we tilted the subjects to R 5° and asked them to memorise the position of R 5° for 1 minute. We then returned the subjects to 0° and asked them to accustom themselves to this position for 1 minute. Finally, we asked the subjects to reproduce the initial R 5° immediately, or 1, 3, 5 and 10 minutes later. We recorded tilt angle of their reported position. We also studied the left condition (L 5°) in the same manner.