PSYCH 120: Anxiety Disorders - Neurobiology and Neuroscience
Medlock Holmes enters the Neurobiological Citadel of Fear.
At its centre stands an enormous transparent brain.
It is not silent.
Signals move constantly between the amygdala, hippocampus, prefrontal cortex, thalamus, hypothalamus, locus coeruleus, and brainstem.
Some pathways detect threat.
Others generate autonomic responses.
Others encode memories.
Others decide whether a stimulus is dangerous.
Others determine whether the alarm can finally be switched off.
Holmes immediately sees the problem.
Anxiety is not produced by a single fear centre.
It is produced by a network.
The central diagram…
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