Thank you for sharing.

> A bit disorienting, actually. Though that could just be a function of it's current novelty for me. It has aspects of feeling like waking up, or remembering something crucial, or turning a corner and finally finding your keys.

Ok, that's definitely what I experience too. I have also described it as "disorienting" and "like waking up". I like your name, CartesianSelfAssertion. I might steal that.

The weird bit is that I experience this much less frequently. Like on the order of minutes or hours instead of ms. And typically after but not during meditation. During meditation I'm busy catching my mind wandering off.

> And completely independent of all that, I also feel like I'm spinning clockwise

Ok that bit's a little weird :-).

> but modulo doing weird stuff, my gut feeling is to say somewhere on the order of 100ms---40ms definitely doesn't clash with my experience.

One idea I had for measuring this (because I can't read about something without jumping to how to measure it) is to try to compare the spacing of the moments against the peaks of an auditory sine (or similar) wave:

http://www.szynalski.com/tone-generator/

    ---------------------------------

Here's an excerpt from my meditation journal, about what it feels like to be in this state of mind (the period of time just after CartesianSelfAssertion):

A change in perspective. Before:

       past    present    future
    --------->--------->--------->

After:

    # - concrete (senses)
    @ - abstract (memories; hypotheticals)

    past present future
      @  ←  #  →  @      past
            ↓
      @  ←  #  →  @      present
            ↓
      @  ←  #  →  @      future

    It's a chain of links, but you're only ever one link at a time.
    There's a lack of sense of self, probably due to the isolation of the links.

(This has now happened a _lot_ of times. Why does it not feel ordinary? Jesus fuck. Ok, I guess I'll just run with it.)