Subfornical Organ Efferents Influence the Excitability of Neurohypophyseal and Tuberoinfundibular Paraventricular Nucleus Neurons in the Rat
Why this work is in the frame
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Bibliographic record
Abstract
Electrical stimulation in the subfornical organ (SFO) alters the excitability of antidromically identified paraventricular nucleus neurons. Extracellular recordings demonstrate that the dominant effect of single stimuli delivered to the SFO on neurohypophyseal oxytocin and vasopressin containing neurons is an increase in excitability. In 35% of cells tested, this excitation showed a long latency (44.3 +/- 3.4 ms) prolonged duration (208.7 +/- 23.5 ms), while in 16% of the neurons the excitation observed may be described as short latency (24.7 +/- 1.8 ms) short duration (11.6 +/- 1.4 ms). Of the remaining cells antidromically identified as projecting to the posterior pituitary, 12% showed initial decreases in excitability following SFO stimulation while the remaining 37% were unaffected. Evidence is presented demonstrating that stimulation in the region of the SFO results in short latency (27.9 +/- 2.4 ms) short duration (7.8 +/- 0.7 ms) increases in excitability in 22% of antidromically identified PVN tuberoinfundibular neurons tested. These data provide electrophysiological evidence in support of the proposed role of the subfornical organ in the control of posterior and anterior pituitary function.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 it