I'd have to admit that microtones are a basic building block for any tone or pitch,
but with electronic amplification, they can become a dominant sound in themselves.
"Bending" any note exposes the listener to microtones, and acoustically, they just fade away.
But electronic feedback, or capturing them digitally, can allow them to emit as sound in a controllable way.
But that's like trying to capture a comet, you can't, but you can buffer it with various means,
so you can aim it through your speakers, where hopefully, it creates a wanted noise.
Using a mechanical device to detune my guitar, having a floating tuning, works best.
When microtones are feeding back, perfect pitch enables a linear, one-dimensional expression,
but slight detuning compresses their propogation, and feeding additional microtonal feedback can be a buffer.
Please, think of the signal from an electric instrument as a comet going along a wire.
It's not a note those magnets and electricity are generating, but a coalesced atomic bundle.
You can imagine it as rubbing off, losing electrons, along the sides.
You can see it as having a leading edge, that loses mass as it pushes its way through the wire.
And even the trail, the last section of the sound "envelope", is a tone generator through your amp.
Different effects make this occur differently, and it all goes back to Jimi Hendrix being a military radar operator,
and inventing phase shifting and flanging, amongst other sound generators, for his electric guitar and recording studio.