當一個記憶形成嘅時候 有份形成嗰個記憶嘅細胞 都會有呢個光敏感開關 咁樣我哋就可以 通過照射激光控制呢啲細胞
When a memory is formed, the cells that form that memory will have this light-sensitive switch, so that we can control these cells by irradiating a laser