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. 2023 Feb 15;10(2):ENEURO.0361-22.2023. doi: 10.1523/ENEURO.0361-22.2023

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Copyright © 2023 Jameson et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Figure 2. — Effects of Long photoperiod on NAc core dopamine release and uptake rate are female-specific. Representative traces from females (A) and males (B) raised in Short (males N = 4, females N = 5), Equinox (males N = 5, females N = 7), and Long (males N = 6, females = 4) photoperiods. C, Evoked NAc core dopamine release across tonic and phasic frequencies in females had a significant main effect of photoperiod (F_(2,55) = 26.69, p < 0.0001) and stimulation frequency (F_(3,55) = 10.26, p < 0.0001). D, while males only had a significant main effect of frequency (F_(3,48) = 5.667, p = 0.002). E, Evoked dopamine release from a single electrical pulse in males (open symbols) and females (closed symbols) showed a significant main effect of photoperiod (F_(2,27) = 3.424, p = 0.047). F, Maximal rate of dopamine uptake (V_max) in males and females showed a significant main effect of photoperiod (F_(2,27) = 6.029, p = 0.007) and an interaction effect (F_(2,27) = 4.334, p = 0.023). *p < 0.05, **p < 0.01, ***p < 0.001 for Long versus Equinox; #p < 0.05, ##p < 0.01 for Long versus Short. Data were analyzed using two-way ANOVA and Tukey’s post hoc multiple comparisons test with an α value of p = 0.05. Data are represented as mean ± SEM.