maybe you can help me out

When I was Sick with cancer, there was a time in the hostpital, My heart enlarged and all 4 vowles where leaking.
I was in ICU for 14 days, but for those 14 days, cant remeber anything, It was like I was not there but my body was. Like my body was autopilot.

I do not know what that means yet but I was searching about Japanese ghost and it said this on bottom of the paragraph on the Ikiryō page,

"Souls are also believed to leave a living body when the body is extremely sick or comatose"

If anyknow what this is called or know anything, tell me.