Chubby♨️@kimmonismus · X罗马 Campus Bio-Medico 的研究发现，摄入咖啡因（如两杯咖啡或咖啡因口香糖）能短暂增强大脑感觉运动皮层的抑制机制，其效果在感觉输入后19-21毫秒的狭窄时间窗口内达到峰值。这可能导致神经检查中，大脑抑制读数呈现“虚假健康”状态。由于咖啡因模拟了阿尔茨海默病和帕金森病中被破坏的胆碱能信号，它可能因此掩盖认知衰退的早期标志。研究还指出，该效应仅在特定强度的经颅磁刺激测量方法中显现，突显了神经科学研究中方法论选择对结果的关键影响。
Drink your coffee！
Drinking two cups of coffee makes your brain better at hitting its own brake pedal， specifically， the mechanism that quiets motor signals when sensory input arrives.
Researchers at Campus Bio-Medico in Rome gave people caffeine gum and then zapped their brains with TMS， and found the sensory "shush" effect on the motor cortex got stronger， peaking at a very narrow 19-21ms timing window.
If you show up to a neurological exam caffeinated， your brain's inhibitory readouts look artificially healthy. That's a real problem for conditions like Alzheimer's and Parkinson's， where weakened sensory-motor inhibition is one of the key markers doctors look for. Caffeine essentially mimics the cholinergic signaling those diseases destroy， so it could literally mask early signs of cognitive decline on a test.