When the body is in stress, we have various unusual stimulations of the visual sections of the brain, and perhaps that explains the white light or the feeling of compression in the tunnel.

身体受压时,我们收到对大脑视觉区域,各种不同寻常的的刺激,也许这可以解释白光,或者在隧道里压抑的感觉

耶鲁公开课 - 死亡课程节选

And you're feeling like you're in a light mood. You've just passed a test.

但你觉得你想看点轻松的，因为你刚刚通过一门考试。

I feel like 课堂 - SpeakingMax英语口语达人