Although its existence has not been definitively demonstrated, the existence of a(n)________, or a physical trace of each memory in the brain, has been speculated about for some time.

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The Answer of Although its existence has not been definitively demonstrated, the existence of a(n)________, or a physical trace of each memory in the brain, has been speculated about for some time.

Although Its Existence Has Not Been Definitively Demonstrated, the Existence