Table 3.

Within 15 cm on either side of the blink locations, mean (± SEM) percentage of place fields expressed by CA1 cells that have at least one other place field in a different location

	Young	Old	Stable	Remapping
Position 1
Days 1–10	64.4 ± 5.29	59.71 ± 3.99	61.26 ± 6.9	63.11 ± 2.92
Days 11–20	76.03 ± 5.38	44.44 ± 7.28	75.47 ± 7.18	50.18 ± 7.91
Days 21–30	69.33 ± 4.73	54.84 ± 3.0	72.54 ± 4.42	54.59 ± 2.27
Position 2
Days 1–10	57.24 ± 5.56	38.82 ± 5.75	54.0 ± 7.62	44.58 ± 6.09
Days 11–20	65.86 ± 9.41	41.56 ± 7.25	54.67 ± 12.96	54.94 ± 8.08
Days 21–30	46.12 ± 5.46	47.33 ± 12.38	56.3 ± 10.11	38.65 ± 5.98

Data are shown across age groups and across map stability categories. All young rats, n = 6 and all old rats, n = 6; stable rats that did not spontaneously remap, n = 5; and remapping rats that did remap on at least 1 day during spatial eyeblink condition, n = 6. For Position 1, both old rats and remapping rats had significantly fewer place fields per cell than did young and stable rats.