Claim Verification: "Critical periods of heightened cortical plasticity close permanently after early development, rendering the adult brain largely incapable of experience-dependent reorganization comparable to juvenile levels." — Disproved

Automated fact-verification of the claim: "Critical periods of heightened cortical plasticity close permanently after early development, rendering the adult brain largely incapable of experience-dependent reorganization comparable to juvenile levels." Verdict: DISPROVED Key Findings 5 independent methods have been demonstrated to reopen critical periods in adult brains, across visual, auditory, and social reward systems — directly contradicting "permanent" closure. Enzymatic (ChABC), pharmacological (VPA, fluoxetine), psychedelic (psilocybin, LSD, MDMA), and genetic (A1R knockout) interventions all restore juvenile-like plasticity in adults. Evidence spans animal models AND human subjects (VPA reopens absolute pitch learning in adult humans). Adult thalamocortical plasticity "does not disappear but becomes gated" — the machinery persists, merely suppressed by molecular brakes. Files proof.py — Re-runnable Python verification script proof.md — Structured proof report proof_audit.md — Full verification audit trail proof_narrative.md — Plain-language summary proof.json — Machine-readable structured data Generated by Proof Engine v0.9.0.针对以下声明开展自动化事实核查："高度活跃的皮层可塑性（cortical plasticity）关键期（critical periods）会在早期发育阶段结束后永久关闭，使得成年大脑在很大程度上无法实现与幼年水平相当的经验依赖性重塑。" 结论：已证伪（DISPROVED） 主要发现 已有5种独立方法被证实可在成年大脑的视觉、听觉以及社会奖赏系统中重新激活关键期，直接驳斥了"永久关闭"的说法。 酶促（ChABC）、药物（VPA、氟西汀（fluoxetine））、致幻剂（裸盖菇素（psilocybin）、麦角酸二乙酰胺（LSD）、亚甲二氧基甲基苯丙胺（MDMA））以及基因（A1R基因敲除（A1R knockout））干预手段，均可使成年个体恢复类幼年的皮层可塑性。 相关证据涵盖动物模型与人类受试者（例如VPA可使成年人类重新激活绝对音高学习能力）。 成年丘脑皮层可塑性（thalamocortical plasticity）"并未消失，而是被门控调控"——相关机制依然存在，仅被分子制动（molecular brakes）所抑制。 相关文件 proof.py — 可重复运行的Python验证脚本 proof.md — 结构化验证报告 proof_audit.md — 完整验证审核追踪记录 proof_narrative.md — 通俗语言总结 proof.json — 机器可读的结构化数据 本验证由Proof Engine v0.9.0生成。