Summary of reversal rates and first percepts in Experiment 1.

‘Mean duration x No. of reversals’ is less than 600 s, as the final percept was artificially ended and is therefore not included in analyses. For lower switch trials, this accounts for 30 s or more in many cases. In addition, durations in which neither CW nor CCW were perceived are not included. Mean durations are given in seconds, rounded to one decimal place.