and so you could sometimes stop the hallucinations by doing things

这时你就可以做一些事情停止产生幻觉
like humming or counting or holding your mouth open.

比如哼曲子数数或者张开嘴巴
And some schizophrenics will do this in an attempt to

一些患者可以通过这样的方法
block auditory hallucinations.

阻止产生幻听
There are delusions.

另外患者还会产生妄想
The difference between a hallucination and a delusion is

幻想和妄想的区别在于
a hallucination is a sensory experience that's wrong,

幻想是一种错误的感官体验
that just didn't really happen.

它实际上是不存在的
A delusion is a belief that isn't right.

妄想则是一种
It's a belief that you shouldn't be having.

你本来不应该有的错误信念
Now, again, the question of what counts as a delusion

妄想和真实之间的界定
and what counts as accuracy can be a controversial one.

一直是个很有争议的问题