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“As such, this research could greatly aid efforts to detect Alzheimers disease from its earliest stages.”

What is Alzheimer’s disease?

A middle-aged woman looks worried in bed due to sleep disruptions

A man wearing a grey tshirt sitting on bed of bed in beige room with his head in his hands as he struggles with anxiety and depression and sleep.

The image shows a man sleeping on his back with his mouth open and his arm above his head

A man places a sleep apnea CPAP machine mask on his face, a Tom�s Guide Sleep Week 2025 graphic (right)

A woman lying on her side sleeping with a handdrawn thought bubble over her head to show she�s thinking

The Tom�s Guide Sleep Features Editor sitting cross legged on a hotel bed with wires strapped to her body and head to monitor her sleep

The blue box of the Amazon Echo Spot on bedside table with plant and red and yellow book with Tom�s Guide Amazon Spring Sale badge

A collage of sleep tech gadgets including mattress vacuum, air purifier, glasses, sleep mask and light clips surrounding Tom�s Guide Amazon Spring Sale deals badge on purple background

The image shows a montage of different sleep tech products, including a Hatch Restore sunrise alarm clock, Oura Ring, Rise Sleep App, Mixx earplugs and SOMO eye mask

A woman in bed sleeping next to Momcozy Sunrise Sound Machine Wake-Up Light

a collage of sleep tech gadgets including sleep headphones, a smart ring, sleep mask, smart bed and sunrise alarm clock

NYTimes Connections

Sebastian De Souza as Garrett and Sofia Carson as Alex in "The Life List" on Netflix

NYT Strands on a cellphone

A bald eagle in The Americas

Diego Luna in Andor season 2 trailer

Anthony Mackie in Captain America: Brave New World

Image of a Saatva Viewing Room where a range of Saatva mattresses and sleep products are on display and available to test before buying