The objective 
measure for 
concussion. 

Cardiology has troponin. Concussion and TBI have had nothing. Chronic Trace turns one session on your phone into objective, hard-to-fake biomarkers, scored against your own baseline.

Objective biomarkers
Balance · eyes · cognition · reaction
Manipulation-resistant
Involuntary signals
Personal baseline
Not population norms

Scored against self

Four channels fold into one index, measured against this person's own prior captures, never a population average. Point at a channel to see what it reads.

Software as a Medical Device in development. Patent-pending across concussion and TBI. Chronic Trace is a research-stage platform, positioned as a decision-support tool only. It is not diagnostic; results require clinical interpretation, and clinical decisions remain with licensed healthcare professionals.

Invitation-led

Request 
access. 

Bring your program onto the baseline. We reply within one business day.

CaptureSingle
Live channels4
ReferenceOwn baseline
Response1 business day

Decision support, not diagnostic. Shared in confidence; used only to evaluate fit.

Who runs it

One session. 
Four fields. 

The same single session serves sport, defense, clinical trials, and workplace readiness. Shared science. Different decisions.

Pathway 01

Sport & occupational

Baseline before. Clear to return after.

Pre-participation baselines, sub-concussive exposure, and return-to-play decision support.

BaselinesSub-concussiveReturn-to-play
Field cohorts
  • Football · contact exposure
  • Mixed Martial Arts · active fighters
  • Combat sports · return-to-sport

Active and planned research programs. No identifiable subject data shown.

Decision-support across every pathway, not diagnostic. Results require clinical interpretation; clinical decisions remain with licensed healthcare professionals.

How it works

Capture once. 
Track over time. 

One session sets a personal baseline. Every session after is scored against it, so drift shows up as a line you can read.

01Capture

One short capture.

Balance, eyes, cognition, and reaction, read from a single clip on a phone they already own.

On-deviceNo wearable
BALANCEEYESCOGNITIONREACTIONONE CLIP · MULTIMODAL
02Personal baseline

Their own baseline.

Every signal folds into one index, scored against this person, never a population average.

Calibrated indexSelf-referenced
INDEXSCORED AGAINST SELF
03Tracked over time

Watched session to session.

Recovery reads as a line. Drift shows up early, and return-to-play rests on the trend, not a single day.

Trend over timeReturn-to-play
BASELINE BANDEVENT · RECOVERYSESSION 01 → 07 · TRENDED
The readingDecision support
0
/100Trace Score
Within personal baseline

Every signal folds into one Trace Score, measured against this person's own baseline.

A decision-support signal, not a diagnosis. Clinical decisions remain with licensed professionals.

The science

Every signal 
maps to the brain. 

Balance, the eyes, cognition, and reaction in a single recording. Each domain maps to real neural machinery: the eyes to the brainstem, cerebellum, and frontal cortex; balance to the vestibular and cerebellar systems.

A healthy brain keeps these systems in sync. Injury pulls them apart, and we score that drift. The involuntary streams cannot be willed away, which is what makes the signal manipulation-resistant.

01
Involuntary

Oculomotor

Brainstem · cerebellum · frontal eye fields

Saccade latency, smooth pursuit, and fixation stability.

In concussion

Slowed saccades and a broken vestibulo-ocular reflex are among the earliest, hardest-to-fake concussion signs.

02
Involuntary

Postural

Vestibular system · cerebellum

Three-stance Romberg, sway path, and center-of-mass drift.

In concussion

Increased sway and postural instability are hallmark post-concussion findings.

03
Voluntary

Cognition

Prefrontal · cortical networks

Trail-making and Stroop interference under escalating load.

In concussion

Processing speed and attention measurably slow after a concussion.

04
Voluntary

Reaction

Sensorimotor cortex · motor pathways

Simple reaction time with randomized inter-stimulus intervals.

In concussion

Slowed reaction time is a robust, quantifiable concussion marker.

Built to resist gaming
You can't will a saccade slower, your gaze steadier, or your balance corrections still.
0 live
Scored tests
1 clip
Single multimodal capture
00
U.S. patents pending
Your own
Baseline, not population avg

Methodology grounded in peer-reviewed neuroscience · Software as a Medical Device in development

Research-stage platform, positioned as decision-support only, not diagnostic. Results require clinical interpretation, and clinical decisions remain with licensed healthcare professionals.

The headline score

The Trace Score. 

Every domain folded into one calibrated index, scored against the subject's own baseline.

00/100
Within baseline
Personal baseline
11
Delta
+3
Captures
0
00–39
Within baseline
Coherent with prior captures
40–69
Deviation
Multi-domain drift; re-evaluate
70–100
Disruption
Material dispersion; clinical review

Decision-support signal, not diagnostic. Results require clinical interpretation.

The edge · Multi-baseline

One baseline is a guess. 
We build many. 

Because each capture is quick and repeatable, we take a series of them over time and build each person's own longitudinal baseline: a distribution, not a single noisy point.

Every reading is scored against that personal band, so a real change shows up as drift out of it, not against a population average that was never you.

01

Learns your normal

Repeated captures reveal each person's true baseline and their normal day-to-day variability, not a single guess taken on one day.

02

Catches subtle change

Small drift, after a hit, a hard week, or cumulative exposure, stands out against a person's own history long before a symptom would.

03

Return-to-play & duty

Decisions rest on the trend back to baseline across sessions, not a single symptom-free day.

Sample assessment output

One question: how far from baseline? 

A representative longitudinal record. The index sits within the personal baseline, a head impact spikes it, and the return toward baseline reads at a glance.

Trace Score Baseline 12 Impact eventLower is better
WITHIN NORMAL RANGE0204060IMPACTDec 5Jan 9Feb 6
Pre-impact baseline
0
Average of prior sessions
Post-impact peak
0
Session after the head impact
Recovered to
0
Back within baseline by Feb 6

Sample data for illustration only. Not for clinical interpretation.

FAQ

Worth 
asking. 

Concussion, TBI, return-to-play. The honest answers, including the limits.

Ask us something else
Human reply · <1 business day

Research-stage. Decision-support only, not diagnostic. Clinical decisions remain with licensed healthcare professionals.

The baseline starts here

Baseline before. 
Clear to return.