# What hallucination reveals about our minds

- Institution: TED
- Department: TED2009
- Speaker: Oliver Sacks
- Year: 2009
- Level: For everyone
- Language: English
- Subjects: Biology, Medicine and health, Psychology and the brain
- Source: [TED](https://www.ted.com/talks/oliver_sacks_what_hallucination_reveals_about_our_minds)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Neurologist and author Oliver Sacks brings our attention to Charles Bonnet syndrome -- when visually impaired people experience lucid hallucinations. He describes the experiences of his patients in heartwarming detail and walks us through the biology of this under-reported phenomenon.

## Lectures

1. [What hallucination reveals about our minds](https://invisiblenetwork.ai/learn/ted/oliver_sacks_what_hallucination_reveals_about_our_minds/1522692617bf), 19 min (TED's player)