Hypothesis #2
 
 
- The representation underlying neuronal computation is simple
- Neuronal structure is conserved
- Brain regions used for one function can co-opt other functions
 
- Neuronal signaling is conserved
- Asynchronous, parallel spike signaling used throughout the animal kingdom 
 
From Neuron to Brain, 2nd edition
S. Kuffler, J. Nicolls, A. Martin