Name: 【TED】Oliver Sacks: What hallucination reveals about our minds (What hallucination reveals about our minds | Oliver Sacks)
Uploaded: 2016-11-19T07:14:51.000Z
Duration: 18 min 46 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

And seeing with the brain is often called imagination.

And we are familiar with the landscapes of our own imagination,

our inscapes. We've lived with them all our lives.

But there are also hallucinations as well,

and hallucinations are completely different.

So I am going to be talking about hallucinations,

and a particular sort of visual hallucination

They told me that one of their residents, an old lady in her 90s,

whether she'd had a stroke, or whether she had Alzheimer's.

And so they asked me if I would come and see Rosalie,

but she'd been very startled and very bewildered,

that she had been completely blind from macular degeneration for five years.

But now, for the last few days, she'd been seeing things.

But he has huge teeth on one side of his mouth.

I see a white building. It's snowing, a soft snow.

I see this horse with a harness, dragging the snow away.

They come to a certain point and then stop.

I see a lot of children. They are walking up and down stairs.

Sometimes, she said, before the people come on,

she may hallucinate pink and blue squares on the floor,

And she said, "No, it's not like a dream. It's like a movie."

She said, "It's got color. It's got motion.

But it's completely silent, like a silent movie."

And she said that it's a rather boring movie.

She said, "All these people with Eastern dress,

walking up and down, very repetitive, very limited."

But she was frightened. She'd lived 95 years

and she'd never had a hallucination before.

She said that the hallucinations were unrelated

to anything she was thinking or feeling or doing,

that they seemed to come on by themselves, or disappear.

perfectly sane. She had no medical problems.

She wasn't on any medications which could produce hallucinations.

I said, "There is a special form of visual hallucination

which may go with deteriorating vision or blindness.

There is nothing wrong with your brain. There is nothing wrong with your mind.

that there was nothing seriously the matter,

"I'm not crazy. I'm not demented. I have Charles Bonnet syndrome."

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【TED】Oliver Sacks: What hallucination reveals about our minds (What hallucination reveals about our minds | Oliver Sacks)

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