...effector organ upon a path not exclusively its own but common to it with certain other receptors, that nexus necessitates successive and not simultaneous...common path by various receptors using it to different effect. Let us consider this for a moment. Take the primary retinal reflex, which moves the eye so...

...matter whence they come, must travel if they are to act on the muscle-fibres to which it leads." This necessitates successive and not simultaneous use of...receptors using it "to different or opposed effect," as in the case of the extensor and flexor reflexes. "The result is this reflex or that reflex, but...

...effector organ upon a path not exclusively its own, but common to it with certain other receptors, that nexus necessitates successive and not simultaneous...common path by various receptors using it to different effect. The first link of each reflex chain is a neurone which starts in a receptor organ, eg, a sense-organ....

...but common to it with certain other receptors, * Baglioni's resultsz85 support this inference. 118 such nexus necessitates successive and not simultaneous...result is this reflex or that reflex, but not the two together. 1 8 3 Excitation of the central end of the afferent root of the eighth or seventh cervical...