Paris soon developed his own way of coping.
I went away in my head and I found a place that I could deal with better.
And I only became aware that this was self-destructive when I couldn't stop going into it.
I would imagine dogs, horses and the smell of freedom, the sound of a brook.
And I would play this set of images in my head and sometimes I would wake up
and I would catch myself sitting cross-legged on the floor and rocking.
I would have been sitting there long enough
to wear sores on the back sides of my knees and the bottoms of my ankles.
Many psychologists believe sensory deprivation caused by various kinds of solitary confinement
can affect a crucial function of the brain called the central executive.
No-one knows if this is controlled by a specific part of the brain
but it describes the mental processes which coordinate functions such as language, memory and vision.
It allows us to understand and interact with the world around us.