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. 2002 Aug 23;544(Pt 3):897–912. doi: 10.1113/jphysiol.2002.023374

Figure 5. Representative discharge activity of a cardiac sympathetic afferent during myocardial ischaemia and stimulation with 5-HT and specific 5-HT receptor agonists.

Figure 5

A, myocardial ischaemia increased average discharge activity of this afferent from 0.67 to 2.73 impulses s−1. B-F, responses of this afferent during injection of 5-HT (B), 5-CT (C), α-M-5-HT (D), PBG (E) or SC53116 (F) into the left atrium (LA). This C-fibre afferent (CV = 0.53 m s−1) innervated the posterior wall of the left ventricle.