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. Author manuscript; available in PMC: 2024 Sep 1.
Published in final edited form as: Comp Biochem Physiol A Mol Integr Physiol. 2023 May 23;283:111453. doi: 10.1016/j.cbpa.2023.111453

Figure 1 – Locus coeruleus neurons of adult bullfrogs increased firing frequency in response to hypercapnia (5% CO2).

Figure 1 –

Neurons in the region comprising the locus coeruleus (A) had firing frequency recorded in control conditions (B, C) and after being exposed to 5% CO2 (C, D). Hypercapnia increased firing frequency of all neurons used in this study (E, n=19). Results were compared using paired t-test.