The increase in miniature excitatory postsynaptic currents (mEPSCs) is eliminated in TRPV1−/− mice after chronic intermittent hypoxia (CIH). A and B: examples of mEPSCs under normoxia (NORM) and CIH in TRPV1+/+ (A) and TRPV1−/− (B) mice. Note the increase in mEPSCs after CIH in TRPV1+/+ mice but not TRPV1−/− mice. Examples are from a single trace. C: compared with NORM (N), mEPSCs increased in TRPV1+/+ mice after CIH. On the other hand, mEPSCs did not increase in TRPV1−/− mice after CIH (2-way ANOVA: mouse, P = 0.34; hypoxia, P = 0.29; mouse × hypoxia, P = 0.11). *P < 0.05, CIH vs. NORM with Bonferroni post hoc (TRPV1+/+: NORM, n = 10; CIH, n = 17; TRPV1−/−: NORM, n = 8; CIH, n = 4).