Arousal State-Dependent Alterations in Neural Activity in the Zebra Finch VTA/SNc.

When comparing bursting activity and firing variability across sleep and awake states, most of the VTA/SNc neurons exhibited higher bursting activity and firing variability in awake state ( Figures 4E,F ), though the bursting index did not reach statistical significance (sleep bursting index = 0.04 ± 0.01, awake bursting index = 0.13 ± 0.05, mean ± s.e.m., p = 0.1563, n = 6 birds, sleep CV of ISI = 1.04 ± 0.09, awake CV of ISI = 1.59 ± 0.16, mean ± s.e.m., p = 0.0313, n = 6 birds).

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