Anxiety exists within the brain and wouldn't occur without specific brain pathways. In particular, two pathways are primarily responsible for the anxiety response. The first is the cerebral cortex. This is the outer layer of the brain where all our thoughts, imagination, memory, intuition, planning, and logic exists. The second pathway, and the focus of this post, is the amygdala, two almond shaped structures, one on either side of the brain.
If your anxiety appears to come from nowhere and there is no logical reason why you're experiencing it, you can thank your amygdala.
The amygdala creates aspects of anxiety outside of conscious knowledge or control. In less than one tenth of a second, it provides the means for adrenaline and an increase in heart rate and blood pressure. All the perspiration, muscular tension, and nausea you experience with anxiety stems from the amygdala.
An old fashioned sentinel
The amygdala acts like a guard. It wants to protect us and keep us alive by the action of