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Let me help everyone that doesn’t know the word like me.

“Ultradian rhythms are biological cycles that repeat throughout a 24-hour day, with periods ranging from fractions of a second to several hours. They are different from circadian rhythms, which complete one cycle per day, and infradian rhythms, which have periods longer than a day.”

https://en.wikipedia.org/wiki/Ultradian_rhythm

in short: cycles faster than a day. ultra- (more, greater), -dian (daily). analagous to circadian (cycle per day).

Approximately per day, more specifically. I never made that connection, interesting.
Ultra feels like an awkward way to phrase it. Faster (tachy?) might make more sense
That would mix Greek with Latin.
I can’t hear you, the television is too loud. Now I’m going to get into my automobile that I bought with cryptocurrency and drive to Minneapolis.
in medicine, we start our frankenwords with 2 mixed languages and go up from there
Pharma goes to infinity (or is it zero?)
Always first look at the raw data.

Look at the scatter of the dots in raw expression plots (figure 1e dots). Maybe that's normal for this field, but adjacent scores are all over the place, usually >50% different. That is: very noisy. Imagine the confidence intervals!

Maybe there's signal there, but to my eye, the basic acquisition technique is horrifyingly noisy.

This is only a short period and trivial N, but I also don't see anything systematic in the raw data related to sleep/wake phases.

Only three study participants, bucketing expression into 4-hour intervals, lots of fancy math to massage the data...

I didn't like this paper.

it's certainly a thing. everything has cycles. if it's most animals it'll be in humans. similar to how we knew animals could grow muscle from stretching, but we thought humans didn't.

we now know we can grow muscle from stretching (it's not fun or easy) but it is a thing. needed a better study design. i think these results are from the last 2-3 years.

this is a small study but was probably done for dirt cheap to prove it was somewhat workable. They can acquire better funding now to look for other cycles going on