Every time he falls asleep, wake him up and bring him here.
Fit the rhythm of the sound and vision to his brainwaves, it'll make for a much deeper response.
..
'Listen to my voice.
'Nothing but my voice.
..
You have forgotten your name.
'What is your name? '
Now you will hear a voice say, "Now listen to me. "
'You will always obey this voice. '
'Now, listen to me. Listen to me.
'You are here because you are a traitor.
..
'Now, listen to me. Listen to me. '
Now repeat after me,
"Whenever I hear the voice say, 'Now, listen to me,' I will obey. "
"When I hear the voice say, 'Now, listen to me,' I will obey. "
You will wake up when I count five.
You will forget what's happened to you but you will remember your name.
One, two, three,
four...
five.
https://en.wikipedia.org/wiki/The_Ipcress_File_(film)