The Space Between Reaction and Regulation
Notice · Identify · Regulate
Nirva Institute · Living Reference
The Nervous System Intelligence Glossary
A living reference for the language of Nirva Life — every concept, every source, every article it opens onto.
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This glossary grows with the ecosystem. Every entry links to the article that establishes its evidence base. When we add or refine a term, this page is where it lands first.
A04 entries
- Aligned Perspective
- The perspective an individual intentionally chooses after developing greater awareness of their experiences, conditioning, values, and goals. Not becoming someone new — responding from intentional understanding rather than automatic conditioning. One of the Four Perspectives of Human Experience.
- Autonomic Flexibility
- The capacity of the autonomic nervous system to move responsively between activation and recovery in response to demand. A robust predictor of mental and physical health, often indexed by heart-rate variability.
- Autonomic Nervous System
- The branch of the nervous system that regulates involuntary physiology — heart rate, breathing, digestion, blood pressure, immune tone, arousal. The primary substrate through which nervous system intelligence is expressed.
- Autonomic Regulation
- The evidence-based term for what many people call "nervous system regulation." The ability of the autonomic nervous system to shift flexibly between activation and recovery. Nirva Life uses this as the primary term across the ecosystem.
B02 entries
- Bottom-Up Healing
- Change that begins in the body — breath, movement, sensation, contact — and rises into thought, emotion, and behaviour. Complements top-down (cognitive) approaches rather than replacing them.
- Broaden-and-Build
- Barbara Fredrickson’s theory that positive emotions broaden momentary attention and cognition and, over time, build durable resources like resilience and social bonds. A scientific basis for practices like glimmer hunting.
C05 entries
- Co-Regulation
- Physiological synchrony between nervous systems. Being with a regulated person tends to regulate your own state — documented in meta-analytic and neuroimaging research.
- Conditioned Perspectives
- Individual beliefs, assumptions, expectations, and interpretations acquired through repeated external experiences. Unlike a single identity, they exist as multiple accumulating layers ("I am not enough," "People always leave," "I must always be strong"). Adaptive interpretations — not flaws or diagnoses. One of the Four Perspectives of Human Experience.
- Core Perspective
- The current understanding a person has of themselves — the collection of beliefs, assumptions, expectations, strengths, limitations, and personal narratives that answer, "This is who I am." Not necessarily objective truth; the perspective that currently feels true. One of the Four Perspectives of Human Experience.
- Cornerstone Paper
- The authoritative reference article for a term or cluster. Every subsequent article in a cluster links back to its cornerstone.
- Curiosity
- The stance the Nirva Method invites toward internal experience. Curiosity shifts the nervous-system state itself — replacing self-judgement with information, and shame with inquiry.
D01 entry
- Dorsal Vagal State
- A term from Polyvagal-informed practice referring to states of shutdown, collapse, or numbness. Nirva Life uses this vocabulary carefully, alongside the broader autonomic literature.
E01 entry
- Evidence Library
- The Nirva Institute’s curated collection of peer-reviewed medical and psychological research, organised into ten pillars. Foundation for every claim on Nirva Life.
F02 entries
- Felt Safety
- The subjective, body-based sense that the current moment is safe enough to soften into. Distinct from cognitive knowledge of safety. Trained through practice, relationship, and repeated safe experiences.
- Four Perspectives of Human Experience
- A cornerstone conceptual model within NSI describing four distinct vantage points through which a nervous system organizes experience: Innate (biological foundation), Core (current self-understanding), Conditioned (layered acquired beliefs), and Aligned (the intentionally chosen perspective). Not stages or personality types — coexisting perspectives that continuously influence one another.
G02 entries
- Glimmer
- A brief, often ordinary cue — sensory, interoceptive, or relational — that the nervous system registers as safe. Coined by Deb Dana as the mirror of a trigger.
- Glimmer Hunting
- The deliberate practice of noticing glimmers. Grounded in broaden-and-build, savoring, and reward-system science. Not toxic positivity: a rigorously supported skill of attention.
H01 entry
- Heart-Rate Variability (HRV)
- The natural variation in the interval between heartbeats. One of the best-validated non-invasive indices of autonomic flexibility and a robust marker of stress, recovery, and health.
I04 entries
- I’MPOSSIBLE™
- The Nirva pattern-recognition companion. Trains awareness of inherited or repeated patterns — so they can be seen, named, and changed.
- Innate Perspective
- The biological foundation through which an individual’s nervous system first begins experiencing the world — genetics, temperament, sensory processing, and the earliest organization of the nervous system before extensive conditioning. Not fixed or deterministic; the original foundation upon which later experiences build. One of the Four Perspectives of Human Experience.
- Institute (The Nirva Institute)
- The clinical authority of the ecosystem. Publishes the Evidence Library, cornerstone papers, and position papers.
- Interoception
- The sense of the inner body — heart rate, breath, hunger, tension, temperature. Now understood as one of the most consequential dimensions of experience and a modifiable target of clinical care.
M01 entry
- Magazine
- The editorial voice of Nirva Life. Long-form essays, features, and cinematic journalism organised into recurring issues.
N04 entries
- Nervous System Intelligence (NSI)
- The science of how human beings experience the world through their nervous system. An integrative framework organising evidence from autonomic neuroscience, interoception, predictive processing, and neuroplasticity.
- Neuroception
- The nervous system’s continuous, largely subconscious scanning for cues of safety or threat. Term originated within Polyvagal Theory; the underlying phenomenon is supported by broader autonomic and affective neuroscience.
- Neuroplasticity
- The nervous system’s capacity to change structurally and functionally in response to learning, experience, and practice. The substrate by which regulation becomes durable.
- Nirva Method (The)
- The N-I-R-V-A framework: Notice · Investigate · Regulate · Ventilate · Anchor. The applied practice through which Nervous System Intelligence becomes something you can do.
O01 entry
- Oasis (The Nirva Oasis)
- The rest and restoration surface of the ecosystem. Home for practices designed to slow, soften, and return the nervous system to ease.
P03 entries
- Pattern Recognition
- The nervous-system skill of noticing repeated patterns in thought, feeling, behaviour, and relationship. Central to how I’MPOSSIBLE™ works.
- Polyvagal Theory
- Stephen Porges’ framework popularising concepts of autonomic state, safety, and co-regulation. Its clinical toolkit is widely used; several of its evolutionary premises are under active scientific revision (2023–2026).
- Predictive Processing
- The view that the brain continually generates predictions about incoming sensory information and updates them against evidence. Explains why the same event can produce different experiences in different nervous systems.
R01 entry
- Rituals (The Nirva Rituals)
- The Nirva Life library of short, guided nervous-system practices. Each ritual is a designed somatic ritual with a cue, a body-based practice, an interoceptive anchor, meaning, and closure.
S04 entries
- Safety Cues
- Cues — sensory, interoceptive, environmental, or relational — that the nervous system reads as evidence that the current moment is safe. Their detection is trainable.
- Savoring
- The deliberate prolonging of attention on a positive experience. Associated with reduced depressive symptoms and greater well-being in randomised trials and meta-analyses.
- Somatic Ritual
- A small, repeatable, body-based practice designed to shift the state of the nervous system. Five parts: cue, body-based practice, interoceptive anchor, meaning, closure.
- Sympathetic Activation
- The branch of the autonomic system that mobilises for action. Not the enemy — the goal is flexibility, not permanent calm.
T04 entries
- Titration
- In trauma-informed practice, the deliberate dosing of exposure to intensity — short, small, gradual — so the nervous system can integrate rather than overwhelm.
- Topic Cluster
- A cornerstone article plus a set of deeper sub-articles that together own a topic. Nirva Life clusters include Glimmer Hunting and Somatic Rituals.
- Trauma-Informed Care
- A framework for clinical, educational, and organisational practice that recognises the prevalence and impact of trauma and adapts care accordingly. Widely evidence-supported.
- Trigger
- A cue the nervous system reads as threat, often below conscious thought. Structural mirror of a glimmer.
U01 entry
- Upward Spiral
- The reinforcing loop described in broaden-and-build research: noticing safety supports vagal tone, which broadens attention, which surfaces more safety. The mechanism behind glimmer practice.
V02 entries
- Vagal Tone
- A shorthand for the tone of the parasympathetic branch of the autonomic nervous system. Trainable through slow breathing, movement, contact, and consistent sleep.
- Ventral Vagal State
- A term from Polyvagal-informed practice referring to states of felt safety and social engagement. Nirva Life uses this vocabulary carefully alongside broader autonomic language.
W01 entry
- Window of Tolerance
- Daniel Siegel’s term for the range of arousal within which a person can function well. Widen the window through titration, practice, and relationship.
A living reference
This glossary grows as Nirva Life grows.
Every new cornerstone paper, cluster, or magazine feature adds its language here first. Bookmark this page — it will be the fastest way to see what the ecosystem knows.