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Article: Aging-Related Hyperexcitability in CA3 Pyramidal Neurons Is Mediated by Enhanced A-Type K+ Channel Function and Expression.

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Simkin D; Hattori S; Ybarra N; Musial TF; Buss EW; Richter H; Oh MM; Nicholson DA; Disterhoft JF
J. Neurosci., 2015


Table 3.

fAHP and AP half-width evoked synaptically or by direct somatic current injection with control (KMeth) or phrixotoxin in the internal pipette solution

Group 1 orthodromic APs Somatic current injection ramp
fAHP (mV) AP half-widthVh (ms) fAHP IRAMP (mV) AP half-widththresh (ms)
Young-control (n = 43) -57.88 ± 0.32 1.15 ± 0.02 -50.94 ± 0.63 (42) 1.16 ± 0.02
Young-PaTx (n = 7) -56.79 ± 0.53 1.18 ± 0.03
Aged-control (n = 28) -61.68 ± 0.61*** 0.98 ± 0.02** -53.76 ± 0.74 (28)** 1.09 ± 0.02*
Aged-PaTx (n = 8) -56.25 ± 0.61 1.13 ± 0.02
  • *p < 0.05;

  • **p < 0.005;

  • ***p < 0.0005.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Hippocampus CA3 pyramidal cell fast AHP amplitude (mV) -50.94 ± 0.63 (42) -- Data Table
Hippocampus CA3 pyramidal cell spike half-width (ms) 1.16 ± 0.02 (43) 1.16 (ms) Data Table
Hippocampus CA3 pyramidal cell fast AHP amplitude (mV) -53.76 ± 0.74 (28) -- Data Table
Hippocampus CA3 pyramidal cell spike half-width (ms) 1.09 ± 0.02 (28) 1.09 (ms) Data Table