Microsleeps are episodes of sleep of very short duration
Definition: an episode of sleep lasting less than 30 seconds. These are typically associated with tiredness.
Occurrence:
(1) obstructive sleep apnea
(2) Parkinson's disease
(3) opioid overdose
(4) sleep deprivation
(5) depression
(6) medications
(7) morbid obesity
Impact:
(1) impaired alertness for driving or operating machine
(2) difficulty processing information