Life’s Rhythm Method

Photo of motor neurons
Motor neurons like this one, 
found in the crab Cancer borealis, underlie the walking, swimming, breathing, flying and other rhythmic behaviors found in most creatures, including humans. In this case, 
the motor neuron, pictured in 
yellow, helps to drive the rhythmic action of the crustacean’s stomach. 
Areas believed to be synapses 
are shown in pink. (Image generated by Marie Goeritz, a postdoctoral student in neuroscientist 
Eve Marder’s lab.)