Create a 45-second vertical 9:16 faceless science documentary...

Create a 45-second vertical 9:16 faceless science documentary video about the surprising fact that the human brain itself cannot feel pain. Begin with a dramatic cinematic close-up of a realistic human brain floating in a dark scientific environment, then smoothly transition into a microscopic visualization of neurons and electrical signals traveling through the brain. Explain visually that brain tissue lacks pain receptors called nociceptors. Transition to realistic anatomical visualization showing surrounding blood vessels, nerves, muscles, and protective tissues that can contribute to headaches. Then show an abstract visualization of pain signals traveling through nerves toward the brain. Finish with a striking wide shot of the glowing brain surrounded by rapidly firing neural pathways, creating a mysterious “mind-blowing science” feeling. Realistic medical 3D animation, cinematic camera movement, smooth transitions, dramatic lighting, highly detailed anatomy, educational but suspenseful atmosphere, modern science-documentary aesthetic, no visible humans, no talking head, no logos, no watermark, no on-screen text, no distorted anatomy, continuous visual storytelling, optimized for YouTube Shorts, 9:16 vertical, high quality.