|
|
Tonic
cells |
Phasic
cells |
“Resting” (steady-state) potential |
−61 ± 6
mV (n=80) (−50..−78 mV) |
−66
± 4 mV (n = 5) (−62..−71
mV) |
|
Input resistance |
0.36 ± 0.30 GΩ
(n = 74) (0.06..1.93
GΩ) |
0.26 ± 0.07
GΩ (n = 5) (0.18..0.33
GΩ) |
|
Membrane time constant |
20 ±
11ms (n = 74) ( 5..54
ms) |
11 ± 3
ms (n = 5) (8..16
ms) |
|
Whole cell capacitance |
68 ± 30
pF (n = 74) (11..175 pF) |
43 ± 11
pF (n = 5) (30..54 pF) |
|
Action potential shape parameters: |
|
|
|
Threshold |
−59 ± 7
mV (n = 80) (−39..−75 mV) |
−52 ± 7
mV (n = 5) (−45..−61 mV) |
|
Amplitude |
92 ± 12 mV
(n = 80) (56..115 mV) |
87 ± 9 mV
(n = 5) (78..99 mV) |
|
Overshoot |
33 ± 9 mV
(n = 80) (4 .. 52 mV) |
34.4 ± 1.7 mV
(n = 5) (32.8..37.1
mV) |
|
Afterhyperpolarization |
−10 ± 8 mV
(n = 80) (13.. −32 mV) |
−16 ± 8 mV
(n = 5) (−9..
−27 mV) |
|
Undershoot |
−69 ± 6 mV
(n = 80) (−54..−81 mV) |
−69 ± 5 mV
(n = 5) (−61..−73 mV) |
|
Width |
0.85 ± 0.28
ms (n = 80) (0.43..1.52
ms) |
0.83 ± 0.13
mV (n = 5) (0.66..0.96 mV) |
|
Depolarization rate |
279 ± 121
mV/ms (n = 80) (93..557
mV/ms) |
227 ± 70 mV/ms
(n = 5) (165..323
mV/ms) |
|
Repolarization rate |
−148 ± 55 mV/ms
(n = 80) (−52..−278 mV/ms) |
−133 ± 23
mV/ms (n = 5) (−107..−159 mV/ms) |
Table. Tonic and phasic cell electrophysiological
parameters. In this table values are
means ± standard deviation.
Ranges are also indicated.