I'm not sure if I grasped what you said🙄. There is a spectrum of a "raw" signal and a spectrum of the envelope of a narrow-band filtered signal. Previous study used the former to claim that FC in EEG/MEG is mostly aperiodic (no peak, no oscillations). But you are talking about the latter, right?

Developmental steps are fascinating thing,
And learning all the terms is simpler than you think.
#brainrhymes

On mesencephalon, you got my point clear,
It's simply just midbrain, no more I can say here.

In diencephalon, divisions end on 'mus',
They're thala-, hypothala- and epithalamus.

Onto the telencephalon, it’s big, in fact, I pass.
Consists it of so many things, of laughs, and grit, and naps.

Take someone's rhombencephalon and split it into two halves,
Then met- and myelencephalon is what this person has.

The myelencephalon consists of just one lump,
medulla oblongata, it’s also known as bulb.

For metencephalon, its two constituents
Are pons and cerebellum, no more and yet, no less.

Imagine prosencephalon and split it in your head,
Then tele- and diencephalon are what remain instead.

If you take mesencephalon, not needed to divide.
It will remain midbrain until the day you die.

Between them mesencephalon, another greek nickname,
But mes- means in the middle, so call it just midbrain.

What I have just described was three-vesicle-stage,
One moves from three to five in second month of age.

On top was prosencephalon, the biggest it became.
If you're not fond of greek, then call it just forebrain.

The third was rhombencephalon, which looks like rhomb, hence name.
In simple English words, it's known as hindbrain.

I haven't seen the thread but here's the piece on The Transmitter www.thetransmitter.org/retraction/a...

Cool! Thank you!🤩
If there is MP2RAGE image, that would be nice. Would be interesting to look at individual differences in intracortical myelin.