Nathaniel Kleitman

Yes, 1953 is the watershed moment.

The Eugene Aserinsky and Nathaniel Kleitman discovery.

That's the one.

Aserinsky was a graduate student in Kleitman's lab, and he was actually studying attention in children, not even sleep specifically.

Oh, really? I didn't realize that.

Yeah.

Pickwickian syndrome is now recognized as a form of obesity hypoventilation syndrome, which is related to but distinct from obstructive conditions.

The first formal laboratory was established by Nathaniel Kleitman and Eugene Aserinsky at the University of Chicago in the early 1950s, where they discovered REM.

Their work opened the door to understanding the different stages and eventually to studying how snoring and breathing disorders vary across those stages.

William Dement, a student of Kleitman's, went on to establish the Stanford Disorders Clinic in 1970, one of the first clinical centers dedicated to diagnosing and treating such conditions.

They actually are moving more because they are spending more time in lighter stages.

The connection between these stages and body movement was first described in detail after the discovery of REM sleep in nineteen fifty-three by Nathaniel Kleitman and Eugene Aserinsky at the University of Chicago.

Before their work, sleep was generally considered a single uniform state of unconsciousness, and the idea that it had a complex internal architecture was not widely recognized.

Kleitman is sometimes called the father of modern sleep research.

Once accepted, however, the EEG became the indispensable tool of rest research, and it remains the gold standard for measuring brain states more than nine decades after its invention.

The discovery of REM in nineteen fifty-three by Eugene Aserinsky and Nathaniel Kleitman at the University of Chicago revolutionized the field by revealing that rest contains distinct stages with very different patterns of brain activity.

Aserinsky, a graduate student at the time who was initially assigned the unglamorous task of watching resting infants, noticed that the infants' eyes moved rapidly at certain intervals during rest, darting back and forth beneath closed eyelids in bursts that lasted several minutes.

Intrigued, Aserinsky and his mentor Kleitman extended the observation to adult subjects and found the same rapid eye movements, and when they woke subjects during these periods, the subjects frequently reported vivid, narrative dreams.

Pickwickian syndrome is now recognized as a form of obesity hypoventilation syndrome, which is related to but distinct from obstructive conditions.

The first formal laboratory was established by Nathaniel Kleitman and Eugene Aserinsky at the University of Chicago in the early 1950s, where they discovered REM.

Their work opened the door to understanding the different stages and eventually to studying how snoring and breathing disorders vary across those stages.

William Dement, a student of Kleitman's, went on to establish the Stanford Disorders Clinic in 1970, one of the first clinical centers dedicated to diagnosing and treating such conditions.

While your circadian rhythm governs your 24-hour day, ultradian rhythms are shorter cycles that occur multiple times within that day.

In the 1950s, sleep researcher Nathaniel Kleitman discovered that our bodies cycle through 90 to 120-minute phases during sleep.

This is how we move through REM and deep sleep

Okay, sleep cycles

Yeah

... it's always Bill Dement or Nathaniel Kleitman.

So you know, worked with this guy who really, you know, exposed me to sleep.

I thought it was awesome.

First up, we have ultradian rhythms and your peak performance windows.

Research by sleep scientist Nathaniel Kleitman, the same researcher, incidentally, who co-discovered REM sleep, identified that the brain operates not just in overnight cycles, but in roughly 90-minute ultradian cycles throughout the waking day.

During each cycle, there is a period of higher alertness and cognitive capacity, followed by a trough of lower capacity where the brain is essentially asking for recovery.

Perrette's lab is subsequent work, map these cycles in more detail and identified that most people have two to three genuine peak windows per working day.