# T15
**Entity class:** Concept or analytic term
**Collections:** [[collections/Neurotech|Neurotech]] · [[collections/Consciousness Continuity|Consciousness Continuity]]
## Definition
**T15** is a concept or analytic term. [[wiki/BrainGate2 long-term home BCI study|BrainGate2 long-term home BCI study]] is associated with **T15**. Participant has been publicly identified in UC Davis reporting as Casey Harrell; paper uses T15. T15 used [[wiki/intracortical speech and cursor BCI|intracortical speech and cursor BCI]]. >3,800 hours at home across nearly two years. T15 is associated with 1,960,163 decoded words. 183,060 sentences; average 56 wpm. The entry centers on the concept's meaning, practical use, and boundaries, together with the examples that make the distinction operational rather than merely verbal.
## Relationships
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This entry is routed through [[collections/Neurotech|Neurotech]] and [[collections/Consciousness Continuity|Consciousness Continuity]]. Its source context is developed in [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]]. Status-qualified source edges are preserved in the terminal Research Edges section.
### Key Relationships
- [[wiki/BrainGate2 long-term home BCI study|BrainGate2 long-term home BCI study]] is associated with **T15**. Participant has been publicly identified in UC Davis reporting as Casey Harrell; paper uses T15.
- **T15** used [[wiki/intracortical speech and cursor BCI|intracortical speech and cursor BCI]]. >3,800 hours at home across nearly two years.
- **T15** is associated with 1,960,163 decoded words. 183,060 sentences; average 56 wpm.
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## Research Edges
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#### Consciousness mapping and transfer graph patch — 2026-09-10
**Collections:** [[collections/Neurotech|Neurotech]] · [[collections/Consciousness Continuity|Consciousness Continuity]]
**Relationship source:** [[research/Consciousness Mapping and Transfer Ecosystem Relationship Graph - 2026-09-10|Consciousness Mapping and Transfer Ecosystem Relationship Graph — 2026-09-10]]
**Related source articles:** [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]] · [[articles/The Architecture of Continuity and Emerging Neuroinformatics Standards|The Architecture of Continuity and Emerging Neuroinformatics Standards]] · [[articles/2026 Annual Report on Brain-Computer Interfaces|2026 Annual Report on Brain-Computer Interfaces]] · [[articles/The Organic-Synthetic Brain Atlas|The Organic-Synthetic Brain Atlas]]
#### Outgoing typed edges
- **Edge 720 — `used` → [[wiki/intracortical speech and cursor BCI|intracortical speech and cursor BCI]]** — **VERIFIED_PEER_REVIEWED**; evidence `BRAINGATE_HOME_NATURE`. >3,800 hours at home across nearly two years.
- **Edge 721 — `generated` → 1,960,163 decoded words** — **VERIFIED_PEER_REVIEWED**; evidence `BRAINGATE_HOME_NATURE`. 183,060 sentences; average 56 wpm.
#### Incoming typed edges
- **Edge 719 — [[wiki/BrainGate2 long-term home BCI study|BrainGate2 long-term home BCI study]] `participant_identifier` → this entry** — **VERIFIED_PEER_REVIEWED**; evidence `BRAINGATE_HOME_NATURE`. Participant has been publicly identified in UC Davis reporting as Casey Harrell; paper uses T15.
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