Is Session Physiology diagnostic?
No. Every output is a reviewable flag with the trace and confidence behind it. Session Physiology produces evidence, not diagnosis. The clinician reviews, finalizes, and always decides.
Terminology · coined by SeroState
Session Physiology
Session Physiology is the measurement of physiological and vocal signals during a behavioral-health session, time-aligned to conversation and converted into structured, reviewable evidence — a term coined by SeroState.
Not monitoring, not diagnosis: an evidence layer. The clinician always decides.
The definition, expanded
Evidence from the clinical hour itself.
Self-report tells you what a client says; Session Physiology shows how their nervous system responded while they said it. Dense signal from the clinical hour, fused with the conversation timeline, delivered as FHIR R4 documentation for the clinician to review and finalize. It applies to any behavioral-health session — in person or telehealth, any modality, any duration.
What it measures
Session-dense signal, not a day-long average.
Pick a signal. Capture is scoped to the consented clinical encounter, not the whole day.
Heart rate
The primary signal. Logged from the wearable at session density so it can meet the exact minute of conversation that produced it — not averaged across a day.
Vocal biomarkers
Extracted from session audio and aligned to the same timeline as heart rate and the transcript.
HRV & electrodermal activity
Heart-rate variability joins opportunistically where sampling permits. EDA is fused on the same timeline when the session wearable provides it — common on clinic-pool hardware, not every consumer watch.
Opportunistic streams. The evidence record notes which channels were present.
The say/body gap
Where words and physiology diverge.
A heart-rate spike with no verbal acknowledgment in the surrounding window becomes a reviewable flag — not an alert, not a diagnosis, but evidence the clinician can examine, dismiss, or investigate.
Session trace · segment 41m02s–41m48s
Example
41:12
“No, I’m fine.”
Illustrative. The flag, the trace behind it, and a confidence score arrive in the post-session payload.
Signals are logged during the session, then aligned, fused, and analyzed after it into a FHIR-compatible payload. Your organization holds the PHI — SeroState does not store it.
What it is not
Often confused with. Never the same as.
- Monitoring appcontinuous wellness dashboards, shown to the user✕ Not this
- Diagnostic devicereturns a diagnosis✕ Not this
- Single-session therapya treatment format, not a measurement✕ Not this
- Session Physiologyreviewable evidence from the clinical hour — the clinician decides● This
FAQ
Frequently asked questions
How is it different from a monitoring app?
Monitoring apps track raw signals continuously and present them to the user as wellness feedback. Session Physiology captures dense signal during the clinical session only, time-aligns it to conversation post-session, and converts it into structured evidence for the clinician’s review.
Is it the same as single-session therapy?
No. Single-session interventions describe a treatment format. Session Physiology describes the measurement of physiological and vocal signals during any behavioral-health session, regardless of modality or duration.
Who coined the term?
SeroState coined the term Session Physiology and maintains this page as its reference definition. Measurement and validation detail lives on the science page →