From the NSI Lexicon
All definitions →- Definition
Allostatic Load
“The cumulative wear on the body from repeated or chronic stress responses. As allostatic load increases, the body’s capacity for recovery decreases.”
- Definition
Invisible Exertion
“The biological cost of emotional effort, cognitive load, hypervigilance, and sustained stress — the work the nervous system performs that leaves no visible evidence but creates real metabolic cost and recovery demand.”
- Evidence-InformedFoundational7 min
Astrocytes and Stress
Under sustained stress, astrocytes retract, shrink, and stop supporting the neurons around them. The tissue itself changes.
- Evidence-InformedFoundational6 min
Astrocytes and Stress Physiology
Where stress meets glia.
- ArticleFoundational13 min
CFO and Financial Stress Through NSI
Financial stress in chief financial officers is not a metaphor. It is a measurable physiological state characterized by sustained autonomic arousal, altere
- Evidence-InformedFoundational7 min
Childhood Stress Systems
Childhood Stress Systems within developmental neuroscience — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- ArticleFoundational11 min
Chronic Stress vs. Acute Stress
Stress is not a single phenomenon. It is a family of adaptive responses, each calibrated to a different temporal scale. Acute stress is the nervous system'
- Evidence-InformedFoundational7 min
Digestion During Stress
Digestion During Stress within the gut–brain axis — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- ArticleFoundational11 min
Ethnic Minority Stress Through NSI
Ethnic minority stress refers to the cumulative physiological and psychological burden imposed by chronic exposure to discrimination, microaggressions, and
- ArticleFoundational11 min
Financial Stress Through the NSI Lens
Financial stress is not a character flaw or a failure of willpower. It is a physiological state in which the nervous system, detecting scarcity or threat t
- ArticleFoundational11 min
LGBTQ+ Minority Stress Through NSI
Minority stress refers to the chronic, excess burden of physiological and psychological strain experienced by individuals who belong to stigmatized social
- Evidence-InformedFoundational8 min
Pain and Stress
Pain and Stress within pain neuroscience — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- Evidence-InformedFoundational8 min
Prenatal Stress
Prenatal Stress within epigenetics — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- Evidence-InformedFoundational7 min
Social Stress and Immunity
Social Stress and Immunity within immunology and inflammation — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- Evidence-InformedFoundational8 min
Stress Adaptation
Stress Adaptation within evolutionary biology — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- Evidence-InformedFoundational7 min
Stress and Immune Function
Stress and Immune Function within immunology and inflammation — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- Evidence-InformedFoundational8 min
Stress Exposure
Stress Exposure within epigenetics — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- Established ScienceFoundational7 min
Stress-Related Retrieval
Stress-Related Retrieval within memory science — the science, the human experience, and why it belongs inside Nervous System Intelligence as a practice.
- ArticleFoundational10 min
The HPA Axis and Chronic Stress: 2025 Update
The hypothalamic-pituitary-adrenal axis is the body's primary neuroendocrine stress response system. When the brain detects threat—real or predicted—the hy
- ArticleFoundational5 min
Why Do I Absorb Other People's Stress?
Stress is contagious at the physiological level. Cortisol rises measurably in observers of stressed others — particularly close others — through vagal and endocrine channels the observer has no conscious control over.
- ArticleFoundational11 min
Why Do I Freeze Under Stress?
Freezing under stress is not a failure of will. It is a neurobiological response orchestrated by subcortical circuits that evolved to protect mammals from
- ArticleFoundational7 min
Chronic Stress and the Framework It Creates
- ArticleFoundational11 min
Endocannabinoids and Stress Recovery
The endocannabinoid system is a lipid-based signaling network distributed throughout the central and peripheral nervous systems, responsible for modulating
- ArticleFoundational
Historical essay: NSIQ Under Stress: Why Capacity Fluctuates
Historical NSIQ essays: these manuscripts describe an earlier model of recognition, interpretation, and intentional response. They do not define the current NSIQ construct or establish an approved measurement. Current NSIQ represents individualized proximity to the personally defined Desired State across the Origin-to-Desired-State trajectory. Its production mathematics remain in development; scores from the legacy reflection are not current canonical NSIQ values. Adjacent research citations do not validate the former model.
- ArticleFoundational
Historical essay: Why Stress Can Temporarily Change How Your NSIQ Shows Up
Historical NSIQ essays: these manuscripts describe an earlier model of recognition, interpretation, and intentional response. They do not define the current NSIQ construct or establish an approved measurement. Current NSIQ represents individualized proximity to the personally defined Desired State across the Origin-to-Desired-State trajectory. Its production mathematics remain in development; scores from the legacy reflection are not current canonical NSIQ values. Adjacent research citations do not validate the former model.
- ArticleFoundational5 min
Nutrition After Emotional Stress