 For example, in the femoral chordotonal organ of the locust, the ligament in which sensory neurons are embedded is divided into several strands that are sequentially pulled as the joint is flexed, providing a mechanism for differential activation of the sensory neurons at different position of the joint.The femoral chordotonal organ is located in the femur of the insect leg and it detects position, speed, acceleration, and vibration of the tibia relative to the femur.In "Drosophila melanogaster", where it is possible to systematically analyze neuronal populations using genetic tools, the sensory neurons of the femoral chordotonal organ can be separated into at least 3 functionally and genetically distinct populations