LeDoux and others have shown how auditory information about the tone stimulates BLA neurons. At first, activation of those neurons is irrelevant to the central amygdala {whose neurons are destined to activate following the shock}. But with repeated coupling of tone with shock, there is remapping and those BLA neurons acquire the means to activate the central amygdala.fn16
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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