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Neuron%20as%20a%20Computer

Neuron%20as%20a%20Computer - Neuron as Computer The...

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Neuron as Computer
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The electrical synapse
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Gap junctions: electrical synapse Formed by two different classes of proteins connexins and pannexins from Bloom and Fawcett, A Textbook of Histology, Chapman and Hall, N.Y., Twelfth Edition, 1994, Figure 2-14. Wikipedia
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Gap junctions can rectify (current only flows in one direction) Furshpan & Potter, 1959 Stimulate A Record A Stimulate B Record B Stimulate A Record B Stimulate B Record A stimulate record stimulate record
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We have demonstrated the ways that neurons can encode and transmit information – but how do they do calculations? What does it even mean to “calculate”?
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Computers calculate, what do they do? Boolean logic
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Logic Gates AND 1 1 1 AND 0 1 0 AND 0 0 1 AND 0 0 0
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Neural circuits can act as logic gates ACh ACh ACh AND 1 1 1
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A three-neuron AND gate on off on on off on off off on off off off
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Principle of summation Neurons receive many inputs of many different types from many different cells (thousands in the human brain).
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