Ready…Go: Amplitude of the fMRI Signal Encodes Expectation of Cue Arrival Time
Figure 3
The post-go fMRI signal no longer correlates with the waiting period when there is certainty about the arrival time of the go cue.
(A) In the countdown condition, a number in the middle of the gray ring counted down the seconds until the appearance of the go signal. (B) When there is no uncertainty about the arrival time of the go signal, the fMRI signal is independent of the readiness period (solid line, p-values of the correlation, inset). For comparison, the dashed line represents the fMRI signal in the original experiment (Figure 1), in which there is no countdown. Error bars SEM.