Table 1.

Membrane properties of CA1 neurons from young and aged rats

Spike properties
Group Vm(mV) Rin(MΩ) Threshold (MV) Half-width (mV) Amplitude (mV)
Young (n = 32) −61.6 ± 0.4 88 ± 3 −40.2 ± 0.5 1.02 ± 0.02 78 ± 1
AU (n = 48) −61.4 ± 0.3 99 ± 4 −40.0 ± 0.4 1.02 ± 0.02 76 ± 1
AI (n = 30) −61.1 ± 0.4 109 ± 4* −41.2 ± 0.4 1.02 ± 0.01 77 ± 1
  • The number of neurons examined (in parentheses) was derived from nine rats for each group. *p<0.001 compared with young rats (ANOVA with Tukey-Kramer post hoc test).