PROPRIOCEPTION IN THE LEGS OF PHALANGIDS

Abstract

1. In the legs of phalangids thin areas in the exoskeleton occur in four basic arrangements: (a) solitary slit sensillae, (b) I- and L-shaped slits in clusters. (c) lyriform organs. and (d) circular or campaniform sensillae. 2. Evidence was obtained to indicate that at least the campaniform sensillae on the phalangid tarsus and metatarsus function as proprioceptors. Action potentials, from grouped and isolated slit organs on the tibia and femur, were elicited but were less distinct as to electrical characteristics and function. 3. No response was seen upon application of sound waves and xylene to the campaniform sensillae.