![Oliver Sacks Explains the Biology of Hallucinations: "We See with the Eyes, But with the Brain as Well" | Open Culture Oliver Sacks Explains the Biology of Hallucinations: "We See with the Eyes, But with the Brain as Well" | Open Culture](https://cdn8.openculture.com/wp-content/uploads/2016/08/16092235/sacks-hallucinations.png)
Oliver Sacks Explains the Biology of Hallucinations: "We See with the Eyes, But with the Brain as Well" | Open Culture
What causes hallucinations? | A condition called Charles Bonnet Syndrome can cause blind patients to hallucinate scenes in vivid color. fMRI studies show that these hallucinations... | By TED-Ed | Facebook
![Is Charles Bonnet syndrome real? Can people really see 3D objects or visualize pictures in their head if the mind does not see any visual stimulant from our eyes gathering information? - Is Charles Bonnet syndrome real? Can people really see 3D objects or visualize pictures in their head if the mind does not see any visual stimulant from our eyes gathering information? -](https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/9de8df74-d6c6-484e-a0b1-ecad29dcf05c/AnilSeth_2017-embed.jpg?h=316&w=560)