Adaptation, Physiological 2 Animals 2 Article 2 Central Pattern Generators 2 Duty cycle 2 Dye coupling 2 Feedback, Physiological 2 Lecar model 2 Leech crawling 2 Leeches 2 Left-right symmetry 2 Locomotion 2 Morris 2 Motor Neurons 2 Nerve Net 2 Periodicity 2 Phase relationship 2 adaptation 2 animal 2 central pattern generator 2 computer model 2 connectome 2 electrophysiological procedures 2 ganglion 2 hyperpolarization 2 leech 2 locomotion 2 motoneuron 2 muscle cell 2 nerve cell 2