Fig. 5.
Astrocytes from the dorsal and ventral horn exhibit other electrophysiological differences. A: resting membrane potentials are significantly depolarized in the dorsal horn (−67.4 ± 2.4 mV, n = 33), relative to ventral horn astrocytes (−76.8 ± 1.1 mV, n = 34, P = 0.0008). B: input resistance of dorsal horn astrocytes is significantly higher in dorsal horn astrocytes when compared with astrocytes from the ventral horn (760.5 ± 171.9 mΩ, n = 18, and 279.1 ± 60.9 mΩ, n = 18, P = 0.0153, respectively).