Table 1.

Number of Arc-positive neuronal cells and total cell counts in the control, DNMS, random reward, and MECS groups along the transverse and mediolateral axes of the hippocampus (septal and temporal levels)

Group	CA3		CA1
	Number of Arc + cells Mean ± SE	Number of cells Mean ± SE	Number of Arc + cells Mean ± SE	Number of neuronal cells Mean ± SE
	Proximal (temporal)
Control	8.35 ± 5.32	211.56 ± 7.04	14.51 ± 5.57	360.50 ± 7.88
DNMS	116.00 ± 22.30	256.46 ± 14.93	57.49 ± 5.56	359.74 ± 12.95
Random	24.73 ± 28.63	254.94 ± 5.93	28.98 ± 8.07	366.26 ± 11.61
MECS	180.20 ± 7.42	227.80 ± 3.48	314.20 ± 26.57	387.00 ± 10.66
Distal (septal)
Control	40.03 ± 14.38	263.75 ± 11.00	38.48 ± 19.34	374.88 ± 14.76
DNMS	68.47 ± 19.61	284.93 ± 22.81	119.40 ± 6.46	386.72 ± 30.58
Random	53.16 ± 10.23	275.58 ± 18.93	77.12 ± 7.84	401.82 ± 20.86
MECS	239.80 ± 6.25	308.00 ± 6.37	293.20 ± 10.24	364.40 ± 4.41
Proximal (septal)
Control	17.31 ± 15.16	202.13 ± 11.03	53.19 ± 17.07	410.38 ± 11.99
DNMS	62.26 ± 14.45	217.23 ± 18.15	90.23 ± 9.49	409.19 ± 31.27
Random	34.40 ± 10.73	236.04 ± 19.61	66.94 ± 16.53	368.04 ± 16.88
MECS	153.00 ± 2.62	196.80 ± 3.50	323.20 ± 6.12	400.00 ± 6.98
Distal (temporal)
Control	11.92 ± 5.60	313.50 ± 8.27	21.07 ± 7.31	369.25 ± 17.00
DNMS	93.37 ± 12.14	302.64 ± 7.53	138.72 ± 19.99	432.74 ± 11.08
Random	26.07 ± 27.08	253.44 ± 25.25	64.98 ± 26.75	409.50 ± 24.33
MECS	229.75 ± 14.65	291.50 ± 10.76	316.20 ± 17.27	392.40 ± 5.59

Data are reported as means ± SEM.