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. Author manuscript; available in PMC: 2015 Aug 22.
Published in final edited form as: Neuroscience. 2014 Jun 5;274:341–356. doi: 10.1016/j.neuroscience.2014.05.056

Figure 6.

Figure 6

Histograms illustrating 3 important parameters of the serotonin innervation of the LC in the 4 treatment groups. There was a significant difference across the groups in the average varicosity number (F [3,13] = 8.675; p = 0.002) and in the average positive pixel area of axons and varicosities (F [3,13] = 8.255; p = 0.0025). Groups with the same letter were different in a posthoc pairwise comparison (Newman Keuls p< 0.05). The average varicosity size did not change. Rather, there were fewer of them across the groups.