. 2006 Sep 7;577(Pt 3):907–924. doi: 10.1113/jphysiol.2006.117069

Table 2.

Among I_h(+) neurons, there are no differences between the basic membrane properties of DA and non-DA VTA neurons

	V_mi (mV)	AP threshold (mV)	AP height, threshold to peak (mV)	AP height, peak to trough (mV)	Fast afterhyperpolarization, magnitude from peak (mV)	Afterhyperpolarization, minimum (mV)
I_h(+) TH(+)	−44 ± 1	−24 ± 2	60 ± 3	89 ± 3	92 ± 5	−53 ± 3
	n = 50	n = 35			n = 23	n = 35
I_h(+) TH(−)	−46 ± 1	−28 ± 2	56 ± 3	81 ± 4	78 ± 6	−53 ± 2
	n = 44	n = 33			n = 22	n = 33
I_h(−)	−45 ± 2	−31.1 ± 0.9^*	57 ± 4	85 ± 5	89 ± 5	−59 ± 2
	n = 16^**	n = 26			n = 21	n = 26
P =	0.57	0.047	0.59	0.34	0.14	0.15

I_h(−) neurons differ from TH(+) neurons, P < 0.05.

^**

Confirmed TH(−) neurons only are included in this measure. V_mi, initial membrane potential; AP, action potential..