The childhood experience sounds a lot like dissociation. It can be terrifying and it can be somewhat pleasant. On a darker note it can be associated with child

The childhood experience sounds a lot like dissociation. It can be terrifying and it can be somewhat pleasant. On a darker note it can be associated with childhood trauma, but having had episodes every so often when I was younger and a little less often as an adult I can confirm that it's not exclusively caused by traumatic experiences.