Frequency of anatomical and physiological characteristics in GABAergic and non-GABAergic cell groups1-a
| All cells | Nb+/GAD+ cells | Nb+/GAD− cells | Statistic | |
|---|---|---|---|---|
| (n = 55) | (n= 21) | (n = 34) | χ2 (df) | |
| Anatomy | ||||
| Area | 0.004 (1) | |||
| SI | 16 | 6 | 10 | |
| MCPO | 39 | 15 | 24 | |
| Shape | 0.064 (1) | |||
| Oval-fusiform (Bipolar) | 30 | 11 | 19 | |
| Polygonal (Multipolar) | 25 | 10 | 15 | |
| Size | 2.99 (1) | |||
| Small (≤15 μm) | 3 | 0 | 3 | |
| Medium-Large (>15 μm) | 52 | 21 | 31 | |
| Physiology | ||||
| Response to stimulation (PSH1-b) | 10.14 (1)1-165 | |||
| Increase (“on”) | 36 | 8 | 28 | |
| Decrease (“off”) | 18 | 12 | 6 | |
| Discharge pattern | 0.47 (2) | |||
| Tonic | 29 | 12 | 17 | |
| Tonic and/or cluster | 16 | 5 | 11 | |
| Tonic and/or burst | 10 | 4 | 6 | |
| Low-frequency rhythmicity during stimulation (ACH1-c) | 2.31 (1) | |||
| Rhythmic | 20 | 5 | 15 | |
| Not rhythmic | 35 | 16 | 19 | |
| Unit-to-EEG cross-correlation during stimulation (STA1-d) | 3.79 (1)* | |||
| Correlated | 19 | 4 | 15 | |
| Not correlated | 36 | 17 | 19 |
↵F1-a Frequencies (n, number of cells) for the two groups are presented and compared using the likelihood ratio χ2 statistic;
↵* p < 0.05;
F1-160 p < 0.01;
↵F1-165 p < 0.001.
↵F1-b Classification based on peristimulus histogram (PSH) measure of average discharge rate.
↵F1-c Based on autocorrelation histogram (ACH) values.
↵F1-d Based on unit-to-EEG spike-triggered averages (STA) with EEG from retrosplenial cortex.