N1 indexed somatic utilities

Why N1 gets its own hub

N1 is the theta gate into sleep (4–7 Hz). The body still reports falling, hypnic jerks, limb-float, and onset breathing pauses — residue of the wake-to-sleep switch, not a dream plot. This hub is not a blog about “N1 dreams.” It is the index of 13 high-density metric utilities currently allowed to crawl. Each card is a different symptom × N1 × context triple. Same phase, different hardware. Mixing N1/N2/N3/REM into one omen paragraph is how thin pages get born; this URL refuses that mix.

Contexts present in the live N1 index: onset, fragmentation, awakening. Symptom families: Exploding-head sensory burst (physiological), Sleep-onset breathing pause (physiological), Hypnic myoclonus (sleep start), Tachycardia in hypnagogia, Microsleep nod into N1, Exploding-head sensory burst, Hypnagogic falling-elevator, Hypnagogic limb-float percept, Morning cortisol-linked motor readiness. If two links look similar, read the context suffix — onset is not awakening; fragmentation is not mid-cycle. Cortical language for this stage stays inside N1 physiology, not a personality metaphor.

Row-level facts currently indexed for N1

Open a utility when you woke with a body fact that matches the title, not when you merely searched the phase name. Full N1 batch (13):

Exploding-head sensory burst (physiological) in N1 sleep (onset) — Exploding-head sensory burst (physiological) · N1/onset · 5–12 Hz mixed. Atonia N/A. Markers: loud internal bang percept, scalp jolt, startle freeze. Density 118.

Sleep-onset breathing pause (physiological) · theta 4–8 Hz · N1 — Sleep-onset breathing pause (physiological) · N1/onset · 4–8 Hz theta. Atonia N/A. Markers: breath hold feel, chest stillness, gasping restart. Density 110.4.

Hypnic myoclonus (sleep start) · theta 4–7 Hz · N1 — Hypnic myoclonus (sleep start) · N1/onset · 4–7 Hz theta. Atonia N/A. Markers: sudden limb twitch, falling sensation, brief heart-rate spike. Density 110.

Tachycardia in hypnagogia in N1 sleep (onset) — Tachycardia in hypnagogia · N1/onset · 5–8 Hz theta. Atonia N/A. Markers: racing heartbeat, warm flush, restless limbs. Density 110.

Microsleep nod into N1 in N1 sleep (fragmentation) — Microsleep nod into N1 · N1/fragmentation · 4.37–9.57 Hz theta. Atonia N/A. Markers: eyelid closure, grip loosen, head drop, micro-arousal body hitch. Density 106.2.

N1/awakening: Hypnic myoclonus (sleep start) — Hypnic myoclonus (sleep start) · N1/awakening · 3.93–8.35 Hz theta. Atonia N/A. Markers: brief autonomic flicker, brief heart-rate spike, exit-bound motor reboot, falling sensation. Density 103.9.

Exploding-head sensory burst in N1 sleep (fragmentation) — Exploding-head sensory burst · N1/fragmentation · 4.31–9.4 Hz mixed. Atonia N/A. Markers: loud internal bang percept, micro-arousal body hitch, scalp jolt. Density 103.6.

Tachycardia in hypnagogia in N1 sleep (fragmentation) — Tachycardia in hypnagogia · N1/fragmentation · 4.18–9 Hz theta. Atonia N/A. Markers: micro-arousal body hitch, racing heartbeat, restless limbs, stage-boundary sensory gate. Density 103.3.

Hypnagogic falling-elevator in N1 sleep (awakening) — Hypnagogic falling-elevator · N1/awakening · 4.12–7.8 Hz theta. Atonia N/A. Markers: arm flail, elevator-drop feel, exit-bound motor reboot, gut lift. Density 102.7.

Hypnagogic limb-float percept in N1 sleep (onset) — Hypnagogic limb-float percept · N1/onset · 4–7 Hz theta. Atonia N/A. Markers: floating limbs, body-boundary blur, light numbness. Density 100.

Hypnagogic limb-float percept · theta 4.11–9.11 Hz · N1 — Hypnagogic limb-float percept · N1/fragmentation · 4.11–9.11 Hz theta. Atonia N/A. Markers: body-boundary blur, floating limbs, light numbness. Density 97.

N1/awakening: Hypnagogic limb-float percept — Hypnagogic limb-float percept · N1/awakening · 4.59–7.65 Hz theta. Atonia N/A. Markers: body-boundary blur, exit-bound motor reboot, floating limbs, light numbness. Density 95.2.

Morning cortisol-linked motor readiness · alpha 8–13 Hz · N1 — Morning cortisol-linked motor readiness · N1/awakening · 8–13 Hz alpha. Atonia N/A. Markers: stretch urge, limb warmth return, jaw unclench. Density 91.

How to work a night that belongs on this hub: 1) write the first twenty seconds of residue (heat, weight, mute, twitch, jaw, breath). 2) pick the N1 card whose title names that residue. 3) read that row’s gauges and markers — numbers are URL-specific. 4) carry the row into Lab Search; do not paste a symbol. 5) if the night was mostly plot, use Dream Meaning; if it was mostly body, stay in /somatic.

N1 is a sleep-architecture label, not a type of person. N1 is a theta gate into sleep, N2 a sigma/spindle window, N3 a delta well, REM a dreaming state with spinal atonia. This page only lists N1. Neighbor hubs: N1, N2, N3, REM.

What this hub will not do: diagnose apnea, REM sleep behavior disorder, or psychiatric disease. Persistent dream enactment, choking, or daytime collapse needs a clinician. What it will do: keep N1 metrics honest so Decode is not guessing from a plot summary. Methodology lives on About; Lab Notes by Vigen sit at /notes.