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2. Aerosinusitis - Wikipedia

   en.wikipedia.org/wiki/Aerosinusitis

   Aerosinusitis. Paranasal sinuses. Aerosinusitis, also called barosinusitis, sinus squeeze or sinus barotrauma is a painful inflammation and sometimes bleeding of the membrane of the paranasal sinus cavities, normally the frontal sinus. It is caused by a difference in air pressures inside and outside the cavities. [1][2][3][4][5]

3. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Several countries and states have made it illegal to wear headphones while driving or cycling. [13] It is not uncommon to get a pressure-like feeling when using noise-cancelling headphones initially. This is caused by the lack of low-frequency sounds as being perceived as a pressure differential between the inner and outer ear. [14] [15] [16]

4. 8 Headphones You Can Comfortably Wear to Sleep - AOL

   www.aol.com/8-headphones-comfortably-wear-sleep...

   Ahead, eight versions of sleep headphones that are doing it best, depending on your sleep and ear needs. Download a 12-hour long brown noise playlist and call it a night. Sleep Headphones

5. Are Noise-Canceling Headphones Harmful to Your Ears? - AOL

   www.aol.com/noise-canceling-headphones-harmful...

   Key Takeaways: As the FDA does not regulate headphone volume, it’s up to us to self-regulate our listening volume. Noise canceling headphones can help keep your volume within a safe range, so ...

6. Spaceflight associated neuro-ocular syndrome - Wikipedia

   en.wikipedia.org/wiki/Spaceflight_Associated...

   Mission Specialist (MS) William M. Shepherd rests his head on the stowed treadmill while Pilot Robert D. Cabana, holding Shepherd's eye open, prepares to measure Shepherd's intraocular pressure using a tonometer (in his right hand). Spaceflight associated neuro-ocular syndrome (SANS), [1] previously called spaceflight-induced visual impairment ...

7. These noise-canceling headphones are just as good as ... - AOL

   www.aol.com/lifestyle/noise-canceling-headphones...

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