microsleep

From micro- +‎ sleep.

microsleep (countable and uncountable, plural microsleeps)

1. A brief period of sleep, usually of a few seconds, that may result from sleep deprivation or various medical conditions. [from 20th c.]
   • 2017, Matthew Walker, Why We Sleep, Penguin 2018, p. 134:

     During a microsleep, your brain becomes blind to the outside world for a brief moment—and not just the visual domain, but in all channels of perception.

• recompiles