this is really hard to explain but i'll try my best. it doesn't happen very often at all to me but sometimes i can just be sitting here and i "see" something coming and i react and i blink real quickly and my heart jumps. it just happened now. i was looking at the bottom right corner of my screen and i kinda saw something coming and my heard jumped and i blinked, but the odd thing is, is that i didnt see anything. it was like invisible, or transparent. and another weird thing is that only my left eye blinked, my right eye stayed open (nothing was covering either of my eyes like hair or glasses or anything). another weird thing is that i felt my heart jump on the left side and it "looked" like the thing was coming to my left side. id if i'm just being a weirdo or not, but what the heck could that have been?