Table 2. Values of Parameters for Experiment 2.

Parameter name		Value
Note. The parameters that are common to all four subexperiments are listed at the top. Each of the four subexperiments has a different combination of interstimulus and intertrial intervals, the values of which are listed at the bottom. ISI = interstimulus interval.
Drift for easy condition (ϵe)		.22
Drift for difficult condition (ϵd)		0
Reward		(approx 2 cents)
	DI = ISI×50
ISI	$D_C=\frac{1}{3}{D}_I$	DC = DI
200 msec	Experiment 2a	Experiment 2c
50 msec	Experiment 2b	Experiment 2d