TABLE 2.

Stereological determination of Egr-1–positive cell density on the left and right hemispheres at the infragranular layers of the somatosensorial cortex for 2 and 6 h of recording of the induction of cortical spreading depression (CSD) in adult rats.

Group	Animal	Egr-1 cell	SCE	Thickness	Egr-1 cell	SCE	Thickness
		density RH	RH	RH	density LH	LH	LH
2 h recording High number of CSD episodes	4	77,075.12	0.04	28.30	163,850.09	0.03	29.16
	6	66,525.43	0.04	29.57	104,606.94	0.03	30.16
	14	67,778.58	0.04	27.92	147,191.29	0.03	28.99
	24	122,969.38	0.03	28.61	110,417.15	0.03	29.72
	13	63,254.55	0.06	27.05	98,960.69	0.04	28.41
	15	75,121.43	0.05	24.15	109,653.23	0.04	26.97
	Mean	78,787.53	0.04	27.60	122,446.563	0.03	28.90
	SD	22,276.52	0.009	1.87	26,475.53	0.006	1.12
2 h recording Low number of CSD episodes	3	79,707.50	0.06	26.25	128,828.49	0.05	34.47
	11	63,274.85	0.05	25.06	105,694.41	0.05	25.45
	29	65,865.10	0.05	29.92	81,687.37	0.04	31.08
	31	78,962.42	0.04	31.23	97,698.16	0.04	29.79
	34	56,375.91	0.05	29.87	87,055.36	0.04	29.87
	Mean	68,837.16	0.05	28.47	100,192.76	0.04	30.13
	SD	10,194.86	0.005	2.66	18,517.14	0.006	3.23
6 h recording High number of CSD episodes	18	119,353.3238	0.04	31.08	79,166.98099	0.06	31.34
	20	159,225.4106	0.04	29.97	146,291.4382	0.04	31.08
	26	87,300.06771	0.05	29.58	103,398.8471	0.04	30.30
	27	118,105.1301	0.03	28.67	128,295.7078	0.03	28.14
	28	127,835.8445	0.04	30.51	119,502.0794	0.04	29.42
	Mean	122,363.9553	0.04	29.96	115,331.0107	0.04	30.05
	SD	25,716.66	0.006	0.92	79,166.98099	0.010	1.31
6 h recording Low number of CSD episodes	29 rep	79,578.4467	0.03	30.55	77,361.2809	0.04	29.78
	30	78,495.4937	0.04	30.44	82,902.15573	0.04	29.22
	32	78,738.9635	0.04	29.75	92,226.46693	0.04	30.37
	33	55,357.8865	0.05	29.09	69,011.61588	0.04	30.58
	39	73,257.0813	0.04	28.65	59,969.65573	0.05	28.03
	Mean	73,085.5743	0.04	29.69	76,294.24	0.04	29.60
	SD	10,218.68	0.007	0.83	12,431.4887	0.004	1.023
2 h recording Sham	9	72,696.24085	0.04	29.67	72,243.4081	0.04	27.29
	10	72,077.6669	0.04	26.75	66,980.1333	0.04	28.15
	19	69,493.47595	0.04	30.02	53,485.9831	0.05	29.17
	Mean	71,422.46124	0.04	28.81	64,236.5081	0.04	28.20
	SD	8,698.9398	0.0015	1.80	9,675.012	0.003	0.94
6 h recording Sham	36	59,427.30555	0.04	27.29	89,995.3672	28.49	0.04
	37	57,573.96491	0.04	28.15	73,798.953	29.19	0.04
	38	46,997.21448	0.05	29.17	51,662.4134	29.55	0.04
	Mean	54,666.16165	0.04	28.20	71,8189112	29.08	0.04
	SD	6,705.84	0.003	0.94	19,243.0315	0.54	0.005

2 and 6 h; 2 and 6 h of recording; high and low number, high and low number of CSD episodes; sham, zero episodes; LH and RH, left and right hemispheres; SCE, Schaeffer coefficient error; SD, standard deviation.