
Keywords: 5HT; serotonin; AIH; acute intermittent hypoxia; BDNF; brain derived neurotrophic factor; CtB; choleratoxin B fragment; ERK; extracellular regulated kinase; LTP; long term potentiation; Nx; normoxia; (p)LTF; (phrenic) long-term facilitation; siNT; non-tar