fMRI and DOI Non-Rigid Registration with Discrete Curvature Flows and Mutual Information
Bibliographic record
Abstract
Combined fMRI and optical imaging of intrinsic (hemodynamic) signals has been performed in earlier studied simultaneously. Simultaneous measurements showed a general spatial overlap, low TR (2 sec) and a poor spatial resolution (0.5x1 mm in=plane, slice thickness=2mm) from. Good correspondence between BOLD signal and optically measured Hb was also shown in simultaneous fMRI/DOI human studies, albeit on a low-resolution spatial scale inherent to diffuse optical methods. Multiple-wavelength (spectroscopic) optical imaging of the intrinsic signals enable simultaneous measurements of oxyhemoglobin (HbO), deoxyhemoglobin (Hb) and total hemoglobin (HbT). Quantitative estimates of the concentrations of Hb, HbO, and HbT are obtained by fitting the observed signal changes at all wavelengths to a model, taking into account the respective absorption spectra of HbO and Hb.
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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 | 0.002 | 0.006 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.002 |
| 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".