Pearson's regression analysis was used to ensure that the parameters used to characterize the cells did not depend on the amplitude of the injected current. To ensure that the parameters were not influenced by the elapsed time during the whole-cell recordings, they were compared at the beginning and at the end of the recording period with either parametric (paired t-test) or nonparametric (Sign-test) tests as appropriate (following Shapiro–Wilk's normality test, at P < 0.01). Despite P-values > 0.01, the full width at half maximum of the last AP, the decay times at 25%, 50% and 75% of AHP of the last AP and last ISI were not included in our analysis, as they were not included for the first AP either.
Article: External tufted cells in the main olfactory bulb form two distinct subpopulations.
Full Text (publisher's website) ; Article Metadata ; Article Data (extracted) Antal M; Eyre M; Finklea B; Nusser Z Eur. J. Neurosci., 2006
Functional parameters | Parameters independent of both the amplitude of injected current and the elapsed time | P-values | ||
---|---|---|---|---|
Regression analysis of independence of injected current, Pearson's R correlation | Paired comparison, beginning vs. end of recording | |||
Sign test | Paired t-test | |||
Input resistance | Yes | – | 0.405 | – |
Membrane time constant | Yes | – | 0.868 | – |
Threshold of first AP | Yes | 0.584 | – | 0.220 |
Peak amplitude of first AP | No | 0.579 | – | 0.000 |
Full width at half maximum of first AP | No | 0.259 | 0.006 | – |
Amplitude of AHP of first AP | Yes | 0.136 | – | 0.560 |
Decay time at 25 % of AHP amplitude of first AP | No | 0.007 | 0.360 | – |
Decay time at 50 % of AHP amplitude of first AP | No | 0.005 | 0.542 | – |
Decay time at 75 % of AHP amplitude of first AP | No | 0.007 | 0.877 | – |
First ISI | No | 0.004 | 0.291 | – |
Threshold of last AP | Yes | 0.020 | – | 0.880 |
Peak amplitude of last AP | No | 0.305 | – | 0.000 |
Full width at half maximum of last AP | No | 0.410 | 0.095 | – |
Amplitude of AHP of last AP | Yes | 0.739 | – | 0.263 |
Decay time at 25 % of AHP amplitude of last AP | No | 0.737 | 0.440 | – |
Decay time at 50 % of AHP amplitude of last AP | No | 0.475 | 0.542 | – |
Decay time at 75 % of AHP amplitude of last AP | No | 0.265 | 0.222 | – |
Last ISI | No | 0.169 | 0.175 | – |
Ratio of last and first ISI | Yes | 0.061 | 0.651 | – |
Ratio of thresholds of last and first AP | No | 0.000 | 0.877 | – |
Ratio of peak amplitude of last and first AP | No | 0.007 | 0.000 | – |
Ratio of FWHMs of last and first AP | Yes | 0.011 | – | 0.519 |
Ratio of AHP Amplitude of last and first AP | Yes | 0.093 | – | 0.014 |
Mean of ISI distribution | Yes | 0.082 | 0.880 | – |
Maximum of ISI distribution | Yes | 0.203 | 0.880 | – |
Minimum of ISI distribution | No | 0.009 | 0.291 | – |
Coefficient of variance of ISI distribution | Yes | 0.524 | 0.880 | – |
Inferred neuron-electrophysiology data values
Neuron Type | Neuron Description | Ephys Prop | Extracted Value | Standardized Value | Content Source |
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