Saturday, December 7, 2013

#174 session: sensory fusion driving motor fusion

I hadn't used too much tDCS this week since I got freaked out by the tdcs-kit putting out 322 mA. But my digital multimeter just came in and I found out that it's providing the correct amperage.  So I'll be doing that until the Ionto device comes in the mail.

Despite the fact that I haven't done tDCS for four days, I'd still been seeing continual changes in my vision which seem to be a result of the increased brain plasticity from the prior tDCS sessions.

Last night, for instance, I noticed something new while I was driving to see The Octopus Project.  There is a normal tendency, when I am paying attention to something (in this case driving) for my lazy eye to move off in a different direction and for it to do its own thing.  In other words, in order for my eyes to gaze correctly, attention is required.  What seems to have happened is that my suppression has decreased to the point that when I divert my attention to a different task and my lazy eye begins to wander, the resulting visual conflict grabs my attention back to the eye and then I must gaze correctly.  Otherwise, I get really annoying double vision.  So in this case, sensory fusion is driving motor fusion.  It's sort of like the brain is saying to the eye 'Hey, you can't just go off and do whatever you want now.  You're part of a team.'

It's interesting.  I talked a while back in this video about how motor fusion and sensory fusion go hand in hand with one another.  I mentioned how I would notice that sometimes, if I had a particularly good vision therapy exercise which exercised my motor ability, that the next day I would notice more information pouring in as a result: more depth, more detail, and all that good stuff.  That's an example of motor fusion driving sensory fusion.  So it seems that motor and sensory fusion can drive each other in both directions.  Interesting!

There's no turning back now.  He's officially joined the team.  It's just a matter of increasing the power and increasing the precision.

The point where I'm at right now reminds me of Fixing My Gaze where Susan talks about the point just before she gained stereopsis.  (It's weird how many things I'm able to recall about that book.)  She said that it gets a little confusing because the suppression is at a very low level--just about to go away completely--and yet the fusion isn't quite stable.  So things can get a little, I don't know, shaky, maybe is the word.  It's really exciting to finally be where I'm at and be able to document and articulate and understand what's going on.  I really had doubts that I would ever get here.  Man!


  1. Awesome man! In one year we'll make jokes... Remember the time that.....

    1. I put electrodes on my head?

      Yeah, the sad thing is that I will probably still be doing that--but with different electrode placement.

  2. Hey Andrew,
    I would love to buy one of your light tubes.....
    Lynn Tay's mom

    1. Hello Lynn!

      I'd be happy to make one for you. You can send me a check or money order for $220 (assuming you live in the US). The $20 is for shipping.

      Send me an email. I'll give you my address.