Osmoregulatory Circuits in Slices and En Bloc Preparations of Rodent Hypothalamus
Bibliographic record
Abstract
Osmoregulatory neural networks in the mammalian hypothalamus are responsible for keeping plasma osmolality near a constant set point. This process involves primary osmosensory neurons located in the organum vasculosum lamina terminalis (OVLT) and effector neurons located elsewhere in the hypothalamus and in other parts of the brain. Hypothalamic effector neurons include vasopressin (VP)- and oxytocin (OT)-releasing magnocellular neurosecretory cells (MNCs) in the supraoptic (SON) and paraventricular nuclei. Osmotically induced changes in action potential discharge by MNCs cause proportional changes in VP and OT release into the blood to modulate water and sodium excretion at the kidney. This osmotic regulation of firing rate in MNCs plays a critical role in the maintenance of body fluid balance. In this chapter, we describe spontaneously active in vitro preparations of rodent hypothalamus that have been developed for the specific purpose of studying how osmosensory neurons in the OVLT and other hypothalamic structures regulate MNCs in the SON.
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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 | 0.000 |
| 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".