A two-state model of simple reaction time

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The experiment consisted of 7 blocks, each of which had
103 trials. Each block started when the subject pressed down
the left microswitch. When 0.5 sec had passed after this response,
the LED lit up. The subject was instructed to press down the
right microswitch as fast as possible when the LED lit up.
The LED went out immediately when the subject responded. After
some time (FP) had passed, the next trial began, that is, the LED
lit up and the subject responded. An FP-LED-response cycle was
repeated until the end of the block.
In a block, 102 FPs were used. The first two FPs were 2 sec.
The other 100 FPs were in a randomized sequence of 20 sets of
FPs. Each set consisted of 1.00, 1.30, 1.69, 2.19 and 2.84 sec
FPs. It was randomized with the following restriction: 1.00, 1.69
and 2.84 sec FPs were preceded by each of the members of the set,
which included itself, at least two times, respectively.
The subject was allowed to rest between blocks as long as
he would like to.
The program for experiment III is given in appendix C.