it happened to me all the time when i was young later now i think i might have been hard of hearing (i have to constantly ask people to repeat themselves) so sometimes when someone calls out for me i usually turn around say "hmm yes?"
It's like there's some fleeting ephemeral moment in which you turn your neck around and instinctively reach back out to being called.
Sometimes when i check myself cricking my neck back in a twist i realize there's no one there calling out.That's when i pull myself back together and let the moment go.
I havent thought much about it until i read this ; weird how someone out of blue pokes at a logs ablaze and a dieing cinder glows right back in a moment of incandescent heat.
Then it goes out suddenly ; and just like that.