# PWR-209 — Brain–computer communication: learner worksheet Release: Revision 7T · Full Tutorial Edition Estimated time: Estimated 14 min reading; practical time is provider-set Difficulty: Intermediate Equipment: Common household or practice equipment — Declared Brain–computer communication fixture: In a supervised session, Alex uses the approved BCI to choose YES, NO, PAUSE or HELP. Alex’s established eye-coded yes/no and alphabet board remain available.; Setup aid for Check the complete system: Verify approved equipment, decoder/version, trained team, privacy controls and immediate fallback.; Brain–computer communication log: Person-confirmed message accuracy, rate, correction, calibration/support time, home uptime, privacy and safe fallback versus best alternative access; retain Brain–computer communication errors, assistance, stop and fallback.; BCI communication provider table: from “A high-performance speech neuroprosthesis”, extract participant, implant, decoder, output, confirmation and measured communication rate; from the long-term independent-use study, extract uptime, support, failure and alternative-access context. Use the NIST Privacy Framework for signal, message and account handling. Neither paper permits unconfirmed decoder output to stand as Alex’s speech. Space: Room-scale practice space Automated structural checklist: 10 of 10 structural checks present Evidence quality/context: G4; Deep research depth Automated method-quality band: Comprehensive Method-rating basis: Structure coverage, instruction/check specificity, alternative distinctness, source troubleshooting, comparison depth and whether purpose/check fields are authored rather than derived. Editorial review: Pending manual editorial sign off ## Before you begin - [ ] I read the tutorial authority and stop conditions. - [ ] I have the required equipment/space or a declared accessible alternative. ## Canonical source context Alex uses a provider-configured BCI to select YES, NO, PAUSE or HELP, but no decoder output becomes a message until Alex confirms it through the established eye code. The team rejects artefact, repairs a false HELP and keeps the alphabet board ready. These results belong to the complete person–device–decoder–support arrangement; they are not thought reading. Target outcome: With the clinical-engineering team, the participant calibrates a small choice set, sends person-confirmed messages, corrects false selections and switches to an established communication route when needed. ### Authority and setup conditions - Obtain protocol or clinical clearance, informed consent and confirmation through an established communication method. - Verify approved equipment, decoder/version, trained team, privacy controls and immediate fallback. - Start check for Brain–computer communication: Goal and consent are confirmed independently of the BCI. - Top-of-sheet stop for Brain–computer communication: Stop for pain, headache, skin change, seizure-like activity, distress, marked fatigue, new neurological symptom or participant withdrawal. ### Required or supplied materials - Declared Brain–computer communication fixture: In a supervised session, Alex uses the approved BCI to choose YES, NO, PAUSE or HELP. Alex’s established eye-coded yes/no and alphabet board remain available. - Setup aid for Check the complete system: Verify approved equipment, decoder/version, trained team, privacy controls and immediate fallback. - Brain–computer communication log: Person-confirmed message accuracy, rate, correction, calibration/support time, home uptime, privacy and safe fallback versus best alternative access; retain Brain–computer communication errors, assistance, stop and fallback. - BCI communication provider table: from “A high-performance speech neuroprosthesis”, extract participant, implant, decoder, output, confirmation and measured communication rate; from the long-term independent-use study, extract uptime, support, failure and alternative-access context. Use the NIST Privacy Framework for signal, message and account handling. Neither paper permits unconfirmed decoder output to stand as Alex’s speech. ## 1. Set a person-chosen communication goal Alex confirms the four-message task, acceptable effort, privacy boundary and preferred fallback through the established channel. Why: Goal and consent are confirmed independently of the BCI. Success check: Goal and consent are confirmed independently of the BCI. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “Goal and consent are confirmed independently of the BCI.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 2. Check the complete system The team verifies approved hardware, sensors or implant interface, decoder version, account, display, positioning, skin or clinical status and emergency procedure. Why: Configuration and responsible staff are logged before acquisition. Success check: Configuration and responsible staff are logged before acquisition. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “Configuration and responsible staff are logged before acquisition.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 3. Record a no-command state The provider captures rest or no-selection data and checks noise, artefact and unintended output. Why: A no-command baseline reveals unintended selections before any message is treated as the person’s communication. Success check: During declared no-command trials, unintended output remains within the provider’s predeclared limit. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “During declared no-command trials, unintended output remains within the provider’s predeclared limit.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 4. Calibrate the small choice set The team presents labelled YES, NO, PAUSE and HELP targets with rest breaks and fits only the approved decoder. Why: Each class has enough valid provider-accepted trials and rejected artefacts are counted. Success check: Each class has enough valid provider-accepted trials and rejected artefacts are counted. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “Each class has enough valid provider-accepted trials and rejected artefacts are counted.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 5. Send and confirm messages Alex selects a target; the partner reads it back through the established channel and Alex confirms or rejects before anyone acts. Why: Message meaning is person-confirmed, not decoder-assumed. Success check: Message meaning is person-confirmed, not decoder-assumed. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “Message meaning is person-confirmed, not decoder-assumed.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 6. Repair false selection On an incorrect HELP output, Alex uses PAUSE or the conventional channel, the partner cancels the message and the error enters the log. Why: Wrong output produces no external action and authorship is restored. Success check: Wrong output produces no external action and authorship is restored. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “Wrong output produces no external action and authorship is restored.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 7. Compare with best alternative Measure confirmed accuracy, rate, correction time, fatigue, setup burden and privacy beside the eye-coded or board method. Why: The BCI is not judged by raw speed alone. Success check: The BCI is not judged by raw speed alone. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “The BCI is not judged by raw speed alone.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 8. Finish with fallback and review The provider stages decoder unavailability; Alex communicates one message through fallback, then the team checks symptoms and makes the next decision. Why: Fallback works and progression remains team- and participant-controlled. Success check: Fallback works and progression remains team- and participant-controlled. Accessible alternative: Ask the qualified provider to adapt positioning, cue modality, pace, interface or rest while preserving this step’s declared check: “Fallback works and progression remains team- and participant-controlled.” If an adaptation changes the measured task or configuration, record it as a different configuration rather than an equivalent attempt. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## Reflection What changed? ________________________________________________________________________________ What remains difficult? ________________________________________________________________________________ What will I repeat, adapt, ask for help with, or stop? ________________________________________________________________________________ --- Completion of this worksheet demonstrates tutorial participation only. It does not establish capability, qualification, safety clearance, diagnosis, treatment or independent validation.