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. 2007 Jun 27;27(26):7054–7069. doi: 10.1523/JNEUROSCI.1744-07.2007

Figure 8.

Figure 8.

DA increases the amplitude of antidromic bAPs. A, The amplitude of bAPs recorded in the dendrite 150–300 μm from the soma was increased by DA (right; in this example the bAP was recorded ∼200 μm from the soma). Top traces are recordings from the soma, and bottom traces are recordings from the apical dendrite. B, Plots of group data indicate that a significant increase in the amplitude of antidromic APs was observed in the soma and dendrites after DA. Similar to the calcium signal, the percentage change of the dendritic AP was greater than the change in the somatic AP. *p < 0.05, significant difference with a paired t test comparison between baseline and DA conditions. C, Inputs of varying distances from the soma were activated by varying the distance of the stimulation electrode from the soma, along the apical dendrite. Summation of five EPSPs after DA was normalized to baseline summation (see Results). DA had a greater impact on summation of EPSPs that were evoked more distally. Σ indicates summation.