Anxiety Attack: How the Brain Reacts

How Fear Hijacks and Calms the Brain During Anxiety

When an anxiety attack strikes, the brain's response is both powerful and precise. It's a cascade of fear that, a lack the actual danger, can feel like physical torture. The person is acting like a brain thought. The mind's fear center, the amygdala, takes control within less than a second. In less than a second, the signal hijacks your entire brain. "The amygdala hits the panic button, triggering a flood of hormones. Your heart races. Your breath shortens and your muscles tense up."

The hijacking of rational thought by fear

Anxiety attacks are not a sign of a broken brain; rather, they are a sign of a brain functioning too well. When you experience anxiety, your brain appears to be trying to save you. The primary culprit is the amygdala, an almond-shaped structure deep inside the temporal lobe. The amygdala isn't just a fear detector; it's a fear amplifier. It says, "this feels familiar. Last time, something bad happened." The amygdala is always working — working to keep you safe. When it triggers an anxiety attack, it’s actually trying to prepare your body for perceived danger. Because the fear center hits the panic button. Almost immediately, the hypothalamus, a small region at the base of the brain, initiates the body's "fight-or-flight" response. The amygdala then triggers your hearts, lungs, and muscles to work extra hard to keep you from harm. During this period, the prefrontal cortex, responsible for rational thought and decision-making, shuts down. The rational part of the brain goes offline, leaving you unable to reason your way out of the anxiety. You can’t reason your way out of anxiety, because that part of your brain goes offline. This is why trying to talk someone out of an anxiety attack with logic rarely works—the part of the brain that processes logic is offline. It’s here, submerged in panic, that the fear gets louder. Your brain flooding with hormones and leaving you breathless and tense is not a sign of a problem; it’s a sign of a well-functioning brain. You are surviving. Eventually, your brain realizes that there is no actual danger and slowly calms down. "It quiets down."

The Domino Effect of Anxiety Attack

The brain's response is a domino effect. First, it's the amygdala, then the hypothalamus. But other parts of the brain are involved, too. Your hippocampus, the part of your brain responsible for storing and managing memory becomes hyperactive. The hippocampus recognizes the sensation of anxiety as a familiar pattern of neural activity and rings the alarm. It doesn’t differentiate between a real threat and a perceived one; it just knows that the last time this pattern was activated, it was bad. And as anxiety heightens, so does the activity in the hippocampus. Basically, every time the brain is hit with the perception of danger, the stress response is triggered. Finally, when your brain realizes there is no actual threat, it lets the flood of hormones subside. Gradually, the brain calms down. The amygdala's alarming activity levels normalize, and the prefrontal cortex, responsible for logical thought, comes back online. Physical sensations—rapid heart rate, tense muscles, and heavy breathing—return to their baseline states. Then, and only then, does the anxiety attack end. Because eventually, your brain realizes there is no danger. The brain isn’t broken, it's just doing its job too well. Eventually, your brain realizes and it quiets down.

The Brain's Mistaken but Intense Survival Mechanisms

Agitated and trapped in a cycle of fear with no actual trigger, the anxious brain throws its survival instincts into high gear. The heart starts racing, breath quickens, and muscles tense up, all in an attempt to prepare the body for a perceived danger that isn't there. The amygdala’s role in anxiety is to keep people safe. But seeing it through an anxiety response percieves danger. The amygdala doesn’t understand the nuances: it responds to perceived danger the same way it would to a incoming attack. It says, "this feels familiar. Last time, something bad happened." So the anxiety attack may escalate, the person stuck in a cycle of adrenaline and fear.

Dialing Down

These moments of fight-or-flight serve an evolutionary purpose. But they are meant to be short lived. After the perceived threat is identified as false, the brain begins to relax. Because your brain isn’t a broken thing. It's doing its job too well. The hypoxia, or lack of oxygen, caused by rapid breathing, starts to resolve. Like a car idling back to a stop after a quick acceleration, the heart rate slows down. The adrenaline that once coursed through the body, preparing it for a physical threat, begins to dissipate. The muscles, once tense and ready for action, start to loosen. Eventually, your brain realizes and it quiets down.

Navigating the Aftermath

Slow Breathing and Deep Calm

Deep breathing can help bring the senses back on-line. Even before the anxiety attack ends, slow, steady breathing can help calm the brain. Biomimicry of calm, steady breathing tells the brain, “You’re safe now.” The techniques can train the brain to regulate the body, reducing the “fight or flight” response and allowing the rational part of the brain to return. In the same vein, a quiet, controlled place helps the amygdala calm down after an anxiety attack. If you can, find a safe place for quiet and controlled breathing. When in doubt, move slowly. Don't rush after an anxiety attack. It's better to move slowly and wait for your brain to let go of fear. If you’re experiencing anxiety, document and explore the triggers. After a series of attacks, a person may start to notice patterns in their fears. If the anxiety attack seems to occur after specific stimuli, changing the routine can help avoid future attacks.

Tools to help prevent or manage an anxiety attack

• Slow, controlled breathing to help regulate your heart rate and blood pressure. Just breathe and let your brain know that you are safe.
• Avoid caffeine, excessive salt, and drugs. These are known to increase anxiety.
• Find a safe space. Not immediately after an attack, but for daily functioning. Give yourself time and space to avoid triggers.