Question: How many neurons and how many synapses are there in the human brain?

Asked by 1windshear to Emma, Kristyn, Peter on 5 Sep 2013.

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  1. Photo: Emma StewartEmma Stewart
    answered on 5 Sep 2013:

    Billions!! Too many to count!

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  2. Photo: Kristyn BatesKristyn Bates
    answered on 5 Sep 2013:

    OK, so we’ve answered this one a couple of times.
    We have about 86 billion neurons, but as for synapse, each neuron is thought to have about 7 thousand, so that is a LOT!

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