Table 2

Membrane properties of CA1 pyramidal neurons across day and night in synaptic antagonists

DayNight
Mean ± SEM (n, N)Mean ± SEM (n, N)
Baseline (mV)Anterior−68.41 ± 1.55 (10,6)−67.42 ± 1.37 (11,6)
 Posterior−68.14 ± 1.33 (14,6)−67.44 ± 1.38 (13,6)
Input resistance (MΩ)Anterior74.38 ± 5.14 (10,6)74.49 ± 8.76 (11,6)
 Posterior74.26 ± 4.76 (14,6)74.28 ± 5.88 (13,6)
Sag amplitude (mV)Anterior6.37 ± 0.58 (10,6)6.37 ± 0.65 (11,6)
 Posterior6.43 ± 0.54 (14,6)6.36 ± 0.48 (13,6)
AP response slopeAnterior0.048 ± 0.01 (10,6)0.04 ± 0.015 (11,6)
 Posterior0.051 ± 0.009 (14,6)0.059 ± 0.011 (13,6)
Max (Hz)Anterior18.30 ± 1.46 (10,6)19.55 ± 0.71 (11,6)
 Posterior20.07 ± 1.05 (14,6)21.62 ± 1.06 (13,6)
Imax (pA)Anterior346.0 ± 29.22 (10,6)370.91 ± 14.11 (11,6)
 Posterior381.43 ± 20.91 (14,6)407.69 ± 19.68 (13,6)
Single action potential properties
AnteriorRheobase (pA)132.7 ± 14.76 (10,6)121.82 ± 12.82 (11,6)
Amplitude (mV)93.17 ± 1.15 (10,6)92.885 ± 1.44 (11,6)
Threshold (mV)−40.28 ± 0.90 (10,6)−42.15 ± 0.65 (11,6)
Rise time (ms)0.29 ± 0.01 (10,6)0.32 ± 0.02 (11,6)
Decay time (ms)1.02 ± 0.04 (10,6)1.01 ± 0.03 (11,6)
Half-width (ms)0.99 ± 0.02 (10,6)0.98 ± 0.01 (11,6)
fAHP (mV) a,b−5.77 ± 0.74 (10,6)−4.08 ± 0.51 (11,6)
Male: −5.83 ± 0.56 (11,6)
Female: −3.98 ± 0.58 (10,6)
mAHP (mV)c−9.29 ± 0.65 (10,6)−7.06 ± 0.59 (11,6)
Peak rise (ΔmV/Δms)406.80 ± 20.07 (10,6)397.56 ± 18.27 (11,6)
Peak fall (ΔmV/Δms)−92.16 ± 3.01 (10,6)−91.97 ± 1.78 (11,6)
PosteriorRheobase (pA)126.07 ± 11.17 (14,6)115.23 ± 14.59 (13,6)
Amplitude (mV)92.90 ± 1.03 (14,6)92.07 ± 1.46 (13,6)
Threshold (mV)−40.82 ± 0.49 (14,6)−41.01 ± 0.55 (13,6)
Rise time (ms)0.29 ± 0.01 (14,6)0.28 ± 0.01 (13,6)
Decay time (ms)1.08 ± 0.03 (14,6)1.04 ± 0.02 (13,6)
Half-width (ms)1.03 ± 0.02 (14,6)1.00 ± 0.02 (13,6)
fAHP (mV)−5.13 ± 0.58 (14,6)−5.72 ± 0.45 (13,6)
mAHP (mV)−8.67 ± 0.66 (14,6)−9.65 ± 0.54 (13,6)
Peak rise (ΔmV/Δms)390.30 ± 12.53 (14,6)406.47 ± 16.78 (13,6)
 Peak fall (ΔmV/Δms)−86.65 ± 2.31 (14,6)−88.15 ± 1.96 (13,6)
  • a significant main effect of time-of-day, p =0.044, two-way ANOVA.

  • b significant main effect of sex, p =0.034, two-way ANOVA.

  • c significant main time-of-day, p =0.024, two-way ANOVA. n = number of cells, N = number of mice.