Waking from tonic REM sleep yields an ~80% probability of dream recall, while waking from phasic REM sleep yields a 95-100% probability.

“if I wake you up out of REM sleep somewhere between 80 to 90% probability that you were going to report a dream”

“when you're in that stage of sleep you're not always having the eye movements they come in these strange phases so though you will be in REM sleep and we can Define that with lots of different um sensors on your brain and your body but then there will be times when your eyes are darting back and forth and times when your eyes are not and when those eyes are moving during REM sleep we call that phasic REM sleep and when they're not we call it tonic REM sleep”

“if I wake you up out of that stage no report the other half yes if I wake you up out to a deep non-r sleep stages three and four we down to a 0 to 20% chance that you'll report a dream so very very unlikely if I wake you up out of REM sleep somewhere between 80 to 90% probability that you were going to report a dream”