Fig. 7From: Respiratory pattern and phrenic and hypoglossal nerve activity during normoxia and hypoxia in 6-OHDA-induced bilateral model of Parkinson’s diseaseMean concentration of dopamine (DA), noradrenaline (NA), serotonin (5-HT), 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in the striatum (a) and brainstem (b) of Sham and 6-OHDA rats, evaluated by HPLC detection ex vivo. The data are expressed as mean ± SEM. ###p < 0.001, ##p < 0.01, #p < 0.05 significance versus Sham group (n = 7–8)Back to article page