Blood Supply of Primary Auditory Cortex in Chinchilla: A Corrosion Cast Study
Bibliographic record
Abstract
Abstract INTRODUCTION: The chinchilla animal model is widely used to study the function of the auditory system. The location of auditory cortex in the chinchilla has previously been determined both electrophysiologically and by optical imaging of intrinsic signals. The spatial resolution of functional imaging techniques which rely on changes in the BOLD (blood oxygen dependent level) signal to create images of activity (i.e., fMRI and optical imaging) are ultimately dependent on the resolution of microcirulatory control mechanisms. For example, in response to pure tone auditory stimuli, functional resolution (within cortex) of approximately 400 um has been demonstrated using optical imaging. To better understand the limits of functional imaging the present study was undertaken to explore the structure and properties of the arterial supply within auditory cortex. METHODS: Plastic casts of the cerebral vasculature were prepared by cannulating the ascending aorta, incising the right atrium and then perfusing 50 ml heparinized PBS followed by 20 ml of Batson's #17 resin.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".