neural circuits are funcitonal groups of neurons that process specific types of information
- 1. Simple series circuit - christmas lights - one presynaptic neuron stimulates one postsynaptic neuron which stimulates another neuron...
- -rare except for reflexes
2. Divergent circuit - pyramid shceme - one presynaptic neuron stimulates several postsynaptic neurons which each stimulate several more neurons
3. Convergent circuit - several presynaptic neurons synapse with a single postsynaptic neurons - arrow- many converge to one
4, Reverberating circuit - a form of positive feedback - collateral branches of postsynaptic neurons reach back to the presynaptic nuerons and further stimulate it - breathing
5, Parallel after-discharge processing - both temporal and spacial summation - a single presynaptic cell stimulates a group of neurons which all synapse with a common postsynaptic cell - the last neuron sums the ESPS and IPSP