In a qualified session, Jo completes baseline, feedback, correction and display-hidden blocks for one declared signal with artefacts and symptoms recorded.
This dossier explains the evidence and its limits. It is not a diagnosis, personal recommendation, assessment, clearance, performance promise or training programme. Actionable teaching appears only when the canonical Power record explicitly authorises it.
Complete bounded explanation
What this power means.
Capability to develop or express closed-loop physiological biofeedback in a declared context without inheriting broader claims.
What the current evidence supports
Closed-loop biofeedback can help people learn control of selected measured signals in bounded tasks.
How to observe or measure it without overclaiming
The sensor, preprocessing, feedback rule and task form one versioned system; proxy validity and device-off performance must be tested separately.
Myth
Hack your physiology with a wearable
Metric
Signal-specific learning, device-off retention, functional transfer, burden and harms
Boundary
A responsive graph does not establish diagnosis, health or general self-control.
Negative and limiting findings
Peripheral temperature acquisition did not improve Raynaud clinical outcomes.
HRV biofeedback was not uniquely superior to active alternatives in one stress trial.
Claims this evidence cannot support
hack your nervous system
a high HRV score means health
wearables diagnose stress
permanent control after one session
Individual tutorial · FULL SUPERVISED TUTORIAL
How to learn this Power now.
In a qualified session, Jo completes baseline, feedback, correction and display-hidden blocks for one declared signal with artefacts and symptoms recorded.
Get readyName the single signal, target direction and reason for training; do not mix several displays into one score.
Learn the method10 concrete steps teach the permitted method from start to finish.
See right and wrong7 comparisons show correct or safer execution beside common wrong or riskier choices.
PractiseJo's EMG therapist sets signal-specific sessions and dose. Progress only after stable sensor quality and reproducible, symptom-free performance; then fade feedback or vary one task feature. Screen-hidden retention and functional value must be tested directly. For the next appointment, repeat matching supported object transfer and phase markers before changing reach distance or load; fade EMG screen only when artefact classification remains accurate.
Check progressJo's EMG therapist records electrode site plus sensor type, calibration, block summary, artefact time, feedback state, the shoulder-release action, symptoms, burden and the separate supported-reach outcome. For Jo's surface-EMG fixture, retain the three signature snippets and phase markers for start, lift, place and return; report excluded cable-motion time separately from valid muscle activity.
Authority boundary: Titan teaches the complete method; a qualified person controls the parts that require supervision, clearance, specialist equipment, load, dose or progression. The method is Power-specific; its actionability follows this treatment.
Citation roles are explicit. A source may support existence or trainability while simultaneously limiting transfer, certainty, generalisation or safety.
Paul M Lehrer; Evgeny Vaschillo; Bronya Vaschillo; Shou-En Lu; Dwain L Eckberg; Robert Edelberg; Weichung Joe Shih; Yong Lin; Tom A Kuusela; Kari U O Tahvanainen; Robert M Hamer · 2003 · Primary research
Lucie Daniel-Watanabe; Benjamin Cook; Grace Leung; Marino Krstulović; Johanna Finnemann; Toby Woolley; Craig Powell; Paul Fletcher · 2025 · Primary research
Current teaching and evidence boundary
The next gate remains visible.
External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration; a supervision or non-attempt boundary.
A Power-specific tutorial is available at /tutorials/pwr-048/. It contains a plain-English method, 10 ordered steps, a worked example, right-versus-wrong comparisons, specific mistakes and corrections, practice, measurement, accessibility, stopping rules and evidence. Its supervised mode remains controlling.