TABLE 1.Intrinsic membrane properties of layer 3–4 RS and FS cells
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RS | FS | |
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Membrane potential, mV* | –74.3 ± 0.64 | –69.7 ± 1.00 |
Input resistance, MΩ | 204.4 ± 7.79 | 208.9 ± 23.24 |
Membrane time constant, ms* | 20.0 ± 0.92 | 13.6 ± 1.40 |
Spike threshold, mV | 42.6 ± 0.49 | 42.3 ± 1.27 |
Spike amplitude, mV* | 84.5 ± 0.54 | 71.4 ± 1.86 |
Spike width, ms*† | 1.43 ± 0.02 | 0.64 ± 0.03 |
Steady state firing rate, Hz* | 12.4 ± 0.56 | 36.9 ± 4.85 |
Adaptation, 1st ISI/last ISI* | 0.37 ± 0.04 | 0.92 ± 0.06 |
Values are mean ± SE
* P < 0.01 comparing RS and FS cell means.
† At half-amplitude. N = 58–66 RS cells and 9–14 FS cells. RS, regular spiking; FS, fast spiking.