Table 3.
Experi-mental Phase | Display Blank Screen |
Display Fixation Cross | Beep for Starting |
Sound "Left" or "Right" |
Display Red Cylinder on Left or Right | Beep for Stopping |
---|---|---|---|---|---|---|
Homo-geneous cue | 2 seconds | 2 seconds | 3 seconds | |||
Hetero-geneous cue | 2 seconds | 2 seconds | 2 seconds or 4 seconds, randomly | |||
Stimuli II Screen and/or Sound |
||||||
One experiment consisted of 50 trials. One trial required 7 and 6 or 8 seconds for presenting the cue to each subject for a motor imagery time of 3 and 2 or 4 seconds with audio-visual stimuli presented randomly and unpredictably.