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. 2019 Jan 25;12:279. doi: 10.3389/fnbeh.2018.00279

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Copyright © 2019 Zwaka, Bartels, Lehfeldt, Jusyte, Hantke, Menzel, Gora, Alberdi and Menzel.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Learning-related changes in the spike firing rate. (A) Color-only paradigm: Normalized firing rate (ΔSFR) decreased significantly for the US during training (training as compared to pre-test, Wilcoxon signed-rank test, N = 12, US: p = 0.04) and increased significantly for C–, C+ and US in the post-test as compared to the pre-test (Wilcoxon signed-rank test, N = 12, C–: p = 0.02, C+; p = 0.04, US: p < 0.0001). (B) Color-odor paradigm: ΔSFR increased significantly during training for the rewarded odor (O+) (Wilcoxon signed-rank test, N = 17, O+: p < 0.00046), and increased significantly for C– in the post-test as compared to the pre-test (Wilcoxon signed-rank test, C–: p = 0.016). Asterisks indiacte statistical significance.