Multiterminal receptors in the locust mesothoracic leg

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Abstract

The stretch receptor cells previously found in the locust's metathoracic legs have been implicated in the control of the locust jump. This paper demonstrates that similar receptors exist in the non-jumping mesothoracic legs.

The five multiterminal cells are arranged around the mesothoracic tibia-femur joint and three of these cells respond to tibial movement and position in a phasotonic manner. Their response characteristics and their possible function is discussed.

The cells are also shown to mediate a weak reflex upon two of the extensor tibiae motoneurones.

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