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Is there a name for this mental state I sometimes find myself in after reading for a while? My breathing slows, I start to feel very "focused", and my physical perceptions start to blur. The book or screen I'm reading seems simultaneously both small/near and huge/far, my limbs feel simultaneously heavy and weightless, and time seems to be simultaneously slowing down and rushing forward. Has anyone here experienced this, and do you know what it's called?
I've never tried to make it happen intentionally. It does seem to happen more often when most of the lights are off and I'm the only one still awake, so maybe it is a focus/attention thing. Something about the combination of low mental effort, low sensory input, and the pleasure reward from reading?