Fig. 3
From: The relationship between aortic baroreceptor activity and arterial pressure is not monotonic
a Mean response curves for the four fibre types defined in Fig. 2. Since the Pth for individual fibres differed, the sharp features seen in the response of an individual fibre are smeared in the pooled graphs. However, it is clear that types B and D (40% of total) show substantial firing at all pressures, and that types C and D (30% of total) have a nadir at low pressure, below which firing frequency increases while pressure decreases. b An estimate of the relative contribution of each type of baroreceptor to a response curve of a multifibre record from an intact ADN. The curves in this graph were obtained by finding the product of the type mean response curve (a) and number of fibres contributing to the type mean. While activity from type A fibres (48%) predominates this multifibre response curve, the contribution of all types of fibres (those never silent and those possessing a low pressure nadir) can be seen clearly in the response labelled ALL, which reflects this weighted contribution of the four fibre types