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Article: High ratio of synaptic excitation to synaptic inhibition in hilar ectopic granule cells of pilocarpine-treated rats.

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Zhan RZ; Timofeeva O; Nadler JV
J. Neurophysiol., 2010


Table 2.

Properties of mIPSCs in dentate granule cells after pilocarpine-induced status epilepticus

CGC GC-SE HEGC
Frequency, Hz 1.44 ± 0.21 1.19 ± 0.25 0.34 ± 0.06*
Interevent interval, s 0.69 ± 0.02 0.91 ± 0.04 2.69 ± 0.22§
Amplitude, pA 27.61 ± 0.55 30.24 ± 0.85 30.78 ± 1.40
10–90% rise time, ms 1.71 ± 0.03 2.05 ± 0.04 2.39 ± 0.07§
τ, ms 8.66 ± 0.16 8.44 ± 0.17 10.80 ± 0.46§
Charge transfer, fC 226 ± 7 271 ± 10 358 ± 25§
  • Values are means ± SE. mIPSC frequency was determined for 6 (CGC and GC-SE) or 7 (HEGC) cells per group. Other parameters were determined for 1,293 (CGC), 1,073 (GC-SE), or 362 (HEGC) events recorded from the indicated number of cells. mIPSCs were recorded in the presence of 10 μM NBQX, 50 μM D-AP5, and 1 μM TTX for 2.5 min at 22–24°C. Recordings were made with a CsCl-based internal solution at a holding potential of −70 mV.

  • * Significantly different from CGC at P < 0.01 (Newman-Keuls test after 1-way ANOVA yielded P < 0.005).

  • Significantly different from GC-SE at P < 0.01 (Newman-Keuls test).

  • Significantly different from CGC at P < 0.001 (Kolmogorov-Smirnov test).

  • § Significantly different from GC-SE at P < 0.001 (Kolmogorov-Smirnov test).

  • Significantly different from CGC at P < 0.005 (Kolmogorov-Smirnov test). mIPSC, miniature inhibitory posysynaptic current. See Table 1 for other abbreviations.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Dentate gyrus granule cell firing frequency (Hz) 1.44 ± 0.21 -- Data Table
Dentate gyrus granule cell spike amplitude (pA) 27.61 ± 0.55 -- Data Table
Dentate gyrus granule cell spike rise time (ms) 1.71 ± 0.03 -- Data Table
Dentate gyrus granule cell membrane time constant (ms) 8.66 ± 0.16 -- Data Table