Adenosinergic Modulation of Layer 6 Microcircuitry in the Medial Prefrontal Cortex Is Specific to Presynaptic Cell Type

Table 2.

uEPSP properties of L6 upright- and inverted-preconnections under control and adenosine conditions

Ctrl Adenosine 30 µM Wilcoxon signed-rank test Ctrl Adenosine 10 µM Wilcoxon signed-rank test
Upright-pre connections (n = 8 connections from 8 rats)
1st EPSP amplitude (mV) 0.25 ± 0.23 0.05 ± 0.04 *0.0313 0.24 ± 0.27 0.04 ± 0.04 *0.0156
Normalized 1st EPSP amplitude (%) - 27 ± 16 - - 19 ± 4 -
Paired-pulse ratio 1.67 ± 1.04 4.05 ± 3.65 *0.0313 1.20 ± 0.62 2.41 ± 2.58 0.1094
Coefficient of variation 1.14 ± 0.61 1.34 ± 0.39 0.3125 1.06 ± 0.30 1.25 ± 0.37 0.5781
Failure rate (%) 58.7 ± 33.3 80.6 ± 16.2 *0.0313 59.1 ± 17.0 83.4 ± 4.0 *0.0313
Rise time (ms) 0.91 ± 0.22 1.25 ± 0.30 0.2188 1.13 ± 0.28 0.71 ± 0.19 0.7656
Latency (ms) 1.55 ± 0.63 1.56 ± 0.80 0.5781 1.46 ± 0.60 1.31 ± 0.70 0.5625
Decay time (ms) 28.5 ± 29.8 27.4 ± 27.1 0.8438 22.2 ± 14.5 23.7 ± 19.3 0.5781
Inverted-pre connections (n = 8 connections from 8 rats)
1st EPSP amplitude (mV) 0.99 ± 0.62 0.17 ± 0.15 **0.0078 1.20 ± 0.89 0.68 ± 0.52 *0.0156
Normalized 1st EPSP amplitude (%) - 25 ± 21 - - 58 ± 19 -
Paired-pulse ratio 0.67 ± 0.13 1.54 ± 0.93 *0.0156 0.89 ± 0.32 0.89 ± 0.23 0.8906
Coefficient of variation 0.60 ± 0.16 1.21 ± 0.29 **0.0078 0.70 ± 0.27 0.89 ± 0.26 0.0781
Failure rate (%) 13.6 ± 12.2 68.9 ± 13.9 **0.0039 25.2 ± 21.8 38.1 ± 20.7 *0.0469
Rise time (ms) 1.44 ± 0.74 1.31 ± 0.87 0.5469 1.56 ± 0.73 1.32 ± 0.79 0.1719
Latency (ms) 1.32 ± 0.47 1.24 ± 0.67 0.6406 1.38 ± 0.45 1.89 ± 1.02 0.1563
Decay time (ms) 46.6 ± 25.8 46.1 ± 42.8 0.5273 40.5 ± 15.7 35.9 ± 38.0 0.6875
  • Bold italic font indicates significant differences to control; *p < 0.05, **p < 0.01 for Wilcoxon signed-rank test.

  1. The Journal of Neuroscience vol. 44 no. 15
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