Figure 1.

Two prototypical spike resampling methods. In spike-centered (basic) jitter (blue), each spike is resampled in an interval centered at its original location (black). In interval jitter (red), each spike is resampled in an interval whose location is specified independent of the original spike train. The thick colored lines represent the surrogate spike trains, whereas the thin colored lines represent the potential locations of a resampled spike. For illustration purposes, only two surrogate trains are shown for each jitter type. The actual computation involves many surrogates.