Table 2.

Onset and culmination latencies for each of the three types of reversals

Reversal type	Onset	Culmination
Progressive	1.6 ± 0.1 min postpress	0.7 ± 0.1 min prepress
Early	0.8 ± 0.1 min postpress	2.8 ± 0.3 min postpress
Late	0.9 to 1.7 min prepress^a	0.1 to 0.3 min prepress^a

Data are expressed as average ± SE. ^a N = 3. Range given instead of average.