5,7-Dihydroxytryptamine Lesions of the Dorsal and Median Raphe Nuclei Interfere With Lithium-Induced Conditioned Gaping, but Not Conditioned Taste Avoidance, in Rats.
Bibliographic record
Abstract
Both the dorsal and median raphe nuclei of the midline brainstem region in rats were lesioned with the neurotoxin 5,7-dihydroxytryptamine. Rats were then surgically implanted with intraoral cannulas for fluid delivery and received a single conditioning trial in which 2-min saccharin infusion was followed by either lithium or saline administration. The conditioned gaping seen in the lithium-conditioned rats was significantly attenuated by raphe lesions, indicating that reduction of forebrain serotonin levels interferes with conditioned gaping. However, lesioned rats still expressed comparable conditioned taste avoidance as measured by both the 1- and 2-bottle consumption tests. These results parallel previous pharmacological findings indicating that reduction of serotonin activity interferes with conditioned gaping, but not conditioned taste avoidance.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".