Latencies were measured for all reliable temporal features—points halfway from a baseline to a peak or trough—of neural signals surrounding the epoch of WM trace transfer (Figure S5). These were measured on across-session mean neural signals, and their 99% confidence intervals were computed by bootstrapping across sessions 10,000 times. Each bootstrap iteration resampled sessions with replacement, computed the same across-session mean neural signals, and estimated resampled latencies from them.