Baseline vs. Sleep Mask + Deep Sleep Audio
My first two-night comparison using Oura data: October 4 without a sleep mask or music, followed by October 5 using a sleep mask and deep-sleep ambient audio through headphones.
Read this first: This is an observation from one person across only two nights. It is not a controlled experiment and is not evidence that the sleep mask or audio caused the differences. Sleep can vary substantially from night to night, and other factors were not controlled.
The second night looked dramatically different.
Five Oura measurements side by side
Sleep Score
Total Sleep (minutes)
Sleep Efficiency
Deep Sleep (minutes)
REM Sleep (minutes)
Bars visualize the values reported by Oura for these two nights. Each chart is scaled within its own measurement and should not be used to compare the magnitude of different metrics to one another.
Baseline
Conditions: No sleep mask. No music or study audio.
| Sleep Score | 43 |
|---|---|
| Total sleep | 3h 47m |
| Sleep efficiency | 66% |
| Deep sleep | 7m |
| REM sleep | 24m |
Mask + Audio
Conditions: Sleep mask plus deep-sleep ambient video playing through headphones.
| Sleep Score | 92 |
|---|---|
| Total sleep | 9h 02m |
| Sleep efficiency | 87% |
| Deep sleep | 1h 07m |
| REM sleep | 1h 24m |
An interesting signal, not a conclusion.
Every headline measurement in this initial comparison moved in a favorable direction on October 5. The sleep score rose by 49 points, total sleep increased by more than five hours, efficiency increased by 21 percentage points, and both deep and REM sleep increased by one hour.
That makes the result worth following. It does not tell us why it happened. The second night was much longer overall, and the comparison does not isolate the sleep mask from the audio. Normal night-to-night variation, sleep opportunity, accumulated sleep need, timing, environment and other unmeasured factors could also contribute.
The useful question is whether a pattern begins to repeat over additional nights. Future reports will add observations rather than treating this first comparison as proof.