Research · Selected work
Circadian-Supportive Lighting Triad
A three-domain framework and systematic evidence map connecting biological response, light-exposure systems, and occupant engagement across 647 qualified publications.
- Period
- 2025–present
- Status
- Manuscript submitted
- Perspectives
- Research
30-second case brief
Question, responsibility, method, result.
- Question
- A three-domain framework and systematic evidence map connecting biological response, light-exposure systems, and occupant engagement across 647 qualified publications.
- Responsibility
- First author and project lead
- Methods
- 647 qualified publications · 583 independent study families
- Result
- First author and project lead · 647 qualified publications
Project scope and responsibility
- Context
- Systematic evidence map and conceptual framework · Submitted to Building and Environment
- Role
- First author and project lead
- Evidence base
- 647 qualified publications · 583 independent study families
- Scope
- Biological response · light-exposure systems · occupant engagement
- Publication
- Submitted manuscript · DOI not yet assigned
Overview
Circadian-supportive lighting is often framed as a technology problem, yet real-world outcomes also depend on how biological evidence, light-exposure systems, and occupant engagement work together. As first author and project lead, Ramyar developed the Circadian-Supportive Lighting Triad to connect those three domains in one implementation-oriented framework.
Interactive tool · evidence framework
Build a circadian-lighting implementation question.
Toggle the three evidence domains to see what each combination can answer - and what it leaves unresolved.
Selected implementation lens
Can the system deliver a biologically relevant exposure that people can and will use?
All three domains connect biological intent, technical delivery, and lived use. This is the strongest frame for implementation decisions.
This explorer navigates the review framework; it does not calculate effect size or clinical benefit.
Evidence map
The final review workflow verified 684 publications and produced a qualified evidence map of 647 publications representing 583 independent study families. Complete reports were reviewed for 628 of the 647 qualified publications. These counts describe the evidence-selection process and are kept distinct from the number of unique studies.
What the map reveals
Biological-response criteria appear across the qualified literature, while systems are also widely represented. Occupant engagement is much less common. The chart reports structural coverage of the framework domains - not the efficacy of any lighting intervention - and makes the implementation gap visible.
Occupant-in-the-loop direction
The proposed direction treats the occupant as part of the control and learning loop rather than a passive recipient. Exposure measurement, building response, understandable feedback, and practical occupant action become connected stages that can be evaluated together.
Publication status and contribution
The manuscript is submitted to Building and Environment and does not yet have an assigned DOI. Its contribution is a transparent map of how 647 qualified publications represent biological response, light-exposure systems, and occupant engagement, paired with an implementation framework for future occupant-in-the-loop research.
