The Derivation of the Motor Command to the Spiracles of the Locust

摘要: 1. Three principal motor patterns have been distinguished in the nerves to closer muscle of spiracle 1 locust. Pattern brings about muscular contraction and closing; pattern 2 maintains closure may be brought either by activity pacemakers located each motoneurone or synaptic a mixture both. The possible origins antidromic stimulation observations on occurrence impulse synchronization between units one segment those adjacent segments. In 3, firing slows stops opens. 2. most individuals Locusta , pacemaker predominates firing, while Schistocerca is more common. Different species remain consistent plan for long periods; their effect at normal frequencies indistinguishable. 3. Electrical split bundles connectives has gone some way distinguishing possibly three command interneurones which run from metathoracic ganglion synapse with motoneurones. These produce I:I excitation, acceleration inhibition pacemakers, intact insect are believed bring accurate movements abdominal pumping.