Attentional anchor
An attentional anchor is the chosen object, sound, breath rhythm, or task step to which the user intentionally returns after noticing distraction.
- It defines what a successful return means during this particular exercise.
- Record the anchor beside the cue setting so another session can reproduce the demand.
- Changing the anchor changes the task and weakens a direct comparison.
Return event
A return event is a deliberate reorientation toward the stated anchor after attention has wandered, rather than a period of mere physical stillness.
- It captures the behavior being practiced instead of relying only on a calm-looking trace.
- Review return events alongside the work completed immediately after training.
- Devices may infer returns imperfectly, so user notes still matter.
Signal artifact
Signal artifact is feedback caused by movement, poor contact, electrical interference, or software handling rather than the mental process under review.
- Removing artifact prevents technical noise from becoming an apparent concentration change.
- Mark suspicious intervals before calculating any session rate.
- A clean display cannot prove that every retained signal reflects attention.
Usable-time denominator
The usable-time denominator is the portion of a session that remains after pauses, contact failures, and unrelated interruptions are removed.
- It permits fairer event rates when total clock time differs between attempts.
- Report raw counts together with events per usable minute.
- Normalization improves comparison but does not make unlike exercises equivalent.
Transfer check
A transfer check is a separate observation of reading, writing, planning, or other work that the training was intended to support.
- It tests whether a promising session has practical relevance beyond the device.
- Choose the transfer activity before practice so success is not defined afterward.
- One successful task cannot establish broad or lasting cognitive improvement.
Context note
A context note records time of day, sleep, caffeine, medication changes, room conditions, device fit, and interruptions that could affect interpretation.
- It supplies alternative explanations when two sessions look different.
- Keep the note brief enough to complete consistently after every attempt.
- Context reveals associations; it rarely identifies a single cause on its own.