Nervous System
21 evidence-labeled concepts on Nervous System, drawn from the Shrink Atlas. Each concept is a short lesson: what it is, why it matters, how to work with it. Explore the list, or start with the one that fits your question today.
Autogenic Training
Guiding the body into calm with quiet phrases of warmth and heaviness.
Biofeedback
Watching your body's signals to learn to calm them on purpose.
Box Breathing
A four-part, even-count breath that steadies the nervous system.
Breathing Regulation
Breathing regulation is using slow breath as a lever for calm.
Cortisol Awakening Response
A normal morning cortisol spike that helps you get going.
Critical Periods
The timing of experience sometimes matters as much as the experience itself.
Grounding
Grounding is anchoring yourself in the present through the senses.
Heart Rate Variability
More beat-to-beat variation usually means better recovery and flexibility.
Hebbian Learning
Repeated co-activation strengthens neural connections.
Long-Term Depression (LTD)
The brain learns partly by reducing unnecessary neural connections.
Long-Term Potentiation (LTP)
Learning often strengthens the connections between neurons.
Nervous System Regulation
Regulation is guiding your inner state toward balance.
Neuroplasticity
The brain remains capable of change throughout life.
Parasympathetic Activation
Parasympathetic activation is the body leaning toward rest.
Physiological Sigh
A natural breath pattern that lowers stress in a few cycles.
Polyvagal Ladder
Your nervous system has states, and you can learn to notice them.
Progressive Muscle Relaxation
Systematically tensing and releasing muscles to calm the body.
Synaptic Plasticity
Learning changes how neurons communicate with one another.
Synaptic Pruning
Healthy brain development involves strengthening some neural connections while removing others.
Vagal Tone
Vagal tone is a marker tied to how well the body can settle.
Window of Tolerance
The window of tolerance is the range where you can cope and stay present.
How this library is organized
Every concept in Nervous System lives in one of six realms of the Shrink Atlas and carries an honest evidence label. This page is a navigation aid; the concept pages are where the lessons are. Follow one, or come back tomorrow for the daily concept.
See the whole Atlas · See the frameworks that use these concepts · See guided pathways