Anxiety often reflects a brain that’s operating out of sync with what a situation requires, sometimes moving too fast, sometimes too slow, and sometimes stuck in a pattern it can’t shift out of. In my practice, we explore this by pairing a detailed clinical interview with qEEG findings, and by mapping when symptoms are at their best and worst across the day or week.
Because anxiety isn’t a single, uniform condition, understanding how it shows up matters. Some people feel it primarily in the body (racing heart, shortness of breath) while others experience it cognitively through rumination, worry, or mental overactivity. These differences point to different neural patterns and often require different therapeutic approaches.
My clinical process layers multiple sources of information: client‑reported symptoms, physical and cognitive functioning, and EEG‑based brain activity. Only after integrating these pieces do I make recommendations.
In short, I don’t treat “anxiety” as a generic category. I work to understand the individual first—their brain, their symptoms, their lived experience—and then build a plan that fits them.
What is Anxiety? The Longer Story
Anxiety is your body's natural response to stress, marked by persistent feelings of fear, worry, or dread. While occasional anxiety is normal, chronic anxiety interferes with daily life, triggering physical symptoms like a racing heart, shallow breathing, muscle tension, and restlessness, even when no immediate danger is present.
What Causes Anxiety?
The root causes of anxiety are not tied to a single source, but rather emerge from a complex interplay of genetic, biological, environmental, and psychological factors. These elements combine to alter how the brain perceives and reacts to threats.
1. Genetic Predisposition
-
Anxiety disorders frequently run in families. Having a first-degree relative with an anxiety disorder significantly increases your susceptibility. Recent genomic studies show that this susceptibility is caused by a combination of dozens of minor genetic variants.
2. Environmental and Life Factors
-
Psychological Trauma: Experiencing early childhood adversity—such as abuse, neglect, or the sudden loss of a parent—fundamentally reshapes how the nervous system handles stress later in life.
-
Chronic Stress Buildup: Prolonged exposure to high-pressure environments, such as financial strain or toxic workplaces can gradually erode emotional resilience.
-
Learned Behaviors: Growing up around primary caregivers who model hypervigilant, highly anxious behaviors can train a child to perceive the world as inherently unsafe.
3. Medical and Lifestyle Triggers
-
Medical Issues: Illnesses like hyperthyroidism, cardiovascular disease or chronic pain can directly mimic or trigger panic and anxiety.
-
Lifestyle: High consumption of stimulants like caffeine, misuse of alcohol or recreational drugs, or withdrawing from certain prescription medications frequently induce secondary anxiety.
What Happens in the Brain with Anxiety?
-
Brain Circuitry Hyperactivity: Overactive circuits processing signals of threat and danger coupled with an unbalanced cortex that struggles to downregulate this fear response.
-
Neurotransmitter Imbalances: Fluctuations or deficiencies in brain chemicals—specifically low levels of serotonin and Gamma-aminobutyric acid (GABA), or elevated levels of norepinephrine—disrupt normal mood and stress regulation. [1]
-
HPA Axis Dysregulation: Chronic stress impairs the hypothalamic-pituitary-adrenal (HPA) axis, causing the body to overproduce stress hormones like cortisol and adrenaline.
What is the Brain Activity During Anxiety?
EEGs in anxiety patients mainly show patterns of hyperarousal, reduced relaxation rhythms, and asymmetric frontal lobe activity.
1. High-Beta Wave Activity (20–30 Hz)
Fast beta waves usually represent active thinking and focus. Excessive activity in the frontal, parietal, and temporal regions reflects a brain that is constantly running too fast, leaving the individual prone to panic, rumination, insomnia and chronic worry.
2. Suppressed Alpha Wave Activity (8–12 Hz)
Alpha waves are the brain's idling frequency, dominant when an individual is calm and resting. In anxious individuals, alpha power is significantly lower indicating a brain locked in an overstimulated, defensive state.
3. Frontal Alpha Asymmetry (Rightward Shift)
Anxious individuals typically have more alpha power in the left frontal cortex compared to the right. Since alpha reflects idling, higher left-frontal alpha means the left side (responsible for positive emotions and approach motivations) is quiet. This leaves the right frontal cortex (responsible for threat processing, withdrawal, and negative affect) more active.
4. Elevated Theta/Beta Ratio (TBR)
Shifts in the ratio between slow theta waves and fast beta waves are often observed in the frontal regions. Traditionally seen as an anxiety indicator, modern practitioners interpret it as reflecting reuced capacity to manage stress and control focus, also being seen in other conditions such as ADHD.
How is Anxiety Treated?
Multiple approaches span drugs, therapy and neuromodulation. While traditional medication aims to chemically stabilize mood, advanced technological approaches focus on retraining the brain's electrical signaling to achieve a calmer state.
1. Medication (Pharmacological Approach)
Drugs are commonly used to alter brain chemistry, but they differ significantly in how they affect overall brain activity:
-
Benzodiazepines (Slowing the Whole Brain): Medications like Xanax, Klonopin, and Ativan increase the activity of GABA, an inhibitory neurotransmitter. While effective for acute panic, they slow down the whole brain rather than targeting specific anxiety circuits. This widespread slowing can result in side effects like fatigue, brain fog, and a risk of physical dependence.
-
SSRIs and SNRIs: Antidepressants such as Lexapro or Effexor are preferred for long-term daily management. Instead of broad sedation, they gradually increase serotonin or norepinephrine levels to improve the neuroplasticity and signaling efficiency of the prefrontal cortex over time.
-
Beta-Blockers: Drugs like Propranolol do not cross into the brain to alter thoughts; instead, they block adrenaline receptors in the body. This physically prevents the heart from racing and hands from shaking, breaking the physical feedback loop of a panic response.
2. Evidence-based therapy
-
Cognitive Behavioral Therapy (CBT): Helps you identify, challenge, and reframe your own negative or distorted thought patterns.
-
Exposure Therapy: Involves gradually and safely facing feared situations to break the cycle of avoidance.
-
Acceptance and Commitment Therapy (ACT): Focuses on accepting anxious thoughts without judgment while taking value-aligned actions.
-
Dialectical Behavior Therapy (DBT): Teaches mindfulness, distress tolerance, and emotional regulation.
-
Psychodynamic Therapy: Explores unconscious conflicts and past experiences driving your symptoms
3. Neurofeedback (Brain Retraining)
Neurofeedback leverages neuroplasticity to train the brain to self-regulate its electrical patterns. A practitioner places EEG sensors on the scalp to read real-time brainwave activity. The patient plays a video game or watches a movie that only moves forward when their brain enters a calm state. The software rewards the brain whenever it successfully suppresses the hyperactive "high-beta" waves (associated with rumination) and increases "alpha" waves (associated with relaxed wakefulness). Over 20 to 40 sessions, the brain learns how to naturally maintain this balanced state without the aid of a computer.
4. Cranial Electrotherapy Stimulation (e.g., Alpha-Stim)
Devices like the Alpha-Stim use targeted microcurrents to influence neural oscillations directly. The device is a pocket-sized unit that connects to the earlobes via clip electrodes. It introduces a patented, low-amplitude electrical waveform. This modulates the default mode network and physically stimulates alpha brainwave production.
Content reviewed by: Dr Sarah Prinsloo, PhD
Last Updated: June 2026