I have experienced the same thing as hockey. It is very strange. It is like a combination of an anxiety attack and absence seizure. i have never found any information about it.

It also is similar to the tunnel vision that happens as you start to black out from the high G forces of a roller coaster loop. It may be a blood flow issue. Or, it could be related to holding one's breath.

Since the senses shut off in a series , not in parallel, when oxygen to the brain is reduced, the blood flow or breathing makes the most sense.

Coincidentally, this morning, I just had 8 vials of blood drawn for some hormone and other blood work. I passed out cold after undergoing the same symptoms.

As mentioned before, journal all of the factors before and after this episode.

And be very careful if you need to drive.