This challenge targets the hypothesis: **Dopaminergic Ventral Tegmental-Hippocampal Circuit Protection** **Hypothesis Summary:** ## Mechanistic Overview Dopaminergic Ventral Tegmental-Hippocampal Circuit Protection starts from the claim that modulating MAPT within the disease context of neuroscience can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview Dopaminergic Ventral Tegmental-Hippocampal Circuit Protection starts from the claim that modulating MAPT within the disease context of neuroscience can redirect a disease-relevant process. The original description reads: "## Molec **Falsifiable Predictions:** 1. Pharmacological modulation of MAPT will alter neuroscience markers in validated models by ≥20% 2. Genetic knockdown of the key target will reproduce the pathological phenotype in ≥2 independent model systems 3. Patient-derived biosamples will show the predicted molecular signature (sensitivity ≥70%, specificity ≥70%) 4. Mechanistic intervention at the proposed node will rescue neuronal viability in vitro by ≥30% **Bounty Tier:** $125,144 USD (composite score 0.751) **Challenge Type:** Open — any team may submit experimental evidence supporting or refuting this hypothesis **Success Criteria:** Peer-reviewed evidence demonstrating mechanistic validation of ≥2 of the 4 predictions, with independent replication.