Compact Optical Probe for Time-Resolved NIRS-Imaging
Bibliographic record
Abstract
We present the design of a standalone optical probe integrated with a Time-Gated Single Photon Detection module and Pulsed Light Emission unit. The detection module is capable of detecting photons in specific time windows, thus enabling the measurement of very faint optical signals. The pulse repetition frequency extends up to 100 MHz with a gate-ON time range up to 35ns. The module is user-configurable via a PC interface and can be integrated in any optical setup. The pulsed light emission unit uses a 50 GHz GaAs Vertical Cavity Surface Emitting Laser diode. Experimental characterization was conducted for all the building blocks of the module to ensure its proper functioning. The module was also employed in a real-life application, heart rate monitoring by illuminating the index finger of a volunteer. The novelty of the proposed miniaturized optode lies in the development of a simplified interface for portable Brain-computer interfaces which can be effectively used in applications such as Near-Infrared Spectroscopy and functional brain imaging.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".