Regarding potential biological processes associated with anxiety disorders, some researchers believe that some people have highly reactive nervous systems that quickly produce anxiety responses to environmental stressors. The people may have abnormally low levels of the ___________ transmitter gama-aminobutyric acid (GABA) activity in the amygdala.

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GABA (gamma-aminobutyric acid) is an inhibitory neurotransmitter in the brain that helps to regulate anxiety by reducing neuronal excitability. Low levels of GABA activity in the amygdala, a region of the brain involved in fear and anxiety responses, can lead to increased anxiety.

Regarding Potential Biological Processes Associated with Anxiety Disorders, Some Researchers