From: Marcus Geduld, 35 years of study in psychology

  ''I'm on the autism spectrum.

  My senses get overwhelmed really easily. Most people associate
  autism with social problems. For me, as a high-functioning
  autistic, this means I'm fine one-on-one, but the more people
  you add into the mix, the more trouble I have. When it gets to
  party levels, I start panicking, because there's too much social
  data hitting my senses at once.

  This is just as true of other sorts of sensory experiences --
  non-social ones. I can easily watch TV, but if two TVs were
  playing in the same room, I'll start to feel panicky. My wife
  likes to keep the TV on in the background, which is okay. But
  she sometimes finds a YouTube video that interests her and wants
  to play it. If she does this without first muting the TV, it's
  very hard for me. Even though I'm neither interested in the TV
  nor the video, I can't tune them out.

  How difficult is it for me? Imagine someone spitting in your
  face over and over. It's probably difficult on that level --
  just the two videos running at once.

  I don't have much ability to tune things out or multitask. So I
  have to attend to everything going on at once, and attending to
  two things at once feels as if I'm the rope in a game of tug of
  war. Imagine if, while my wife had on the TV and the video, she
  also turned on the radio.

  When I'm in a stable situation, I can gradually start to tune
  some things out. So, for instance, if I'm sitting in a room with
  you, I can get used to the room and stop thinking about it
  consciously. If, all of the sudden, five dogs run in, I get
  flooded with sensation. It can easily become too much, and I can
  ''overheat.''

  Everyone gets flooded with sensation when things change. Change
  means that the brain can't rely on the ''programs'' it had been
  running before the change, and it also can't instantly know
  which new programs to start running. It is temporarily in a
  state of confusion, until it's able to pick information out from
  the noise, tune the noise out, and process what's important. At
  some level of noise and confusion, everyone becomes like an
  autistic person. We're just more sensitive, more quickly.

  What do you do when you're in a temporary state of confusion?
  Imagine that, while you were asleep, I transported you to Times
  Square. You suddenly woke up with bright lights and huge crowds
  milling about you. You'd probably deal with this by chilling,
  tuning stuff out, and then gradually letting stuff in. I can't
  do that. If a bunch of stuff hits me all at once, I can't tune
  any of it out. I have to deal with it all at once, instantly.

  So if you want to understand it viscerally, ask a friend to give
  you a specific, repetitive task, e.g. carrying spoons from one
  table to another. Easy.

  Then have several other people, standing all around you, start
  throwing other tasks at you:

  ''While you're carrying the spoons, hum Twinkle, Twinkle,
  Little, Star...''

  ''While you're doing that, pay attention to which hand I'm
  holding up and shout left or right, each time I switch...''

  ''While you're doing that, think of random numbers between one
  and 100, and say a new one every five seconds...''

  ''Change Twinkle Twinkle Little Star to Three Blind Mice...''

  Now imagine that you'll get fired if you screw up. That's often
  what it feels like: that you'll be judged incompetent at some
  everyday part of life if you don't attend to all these changes
  at once.

  To not be in a constant state of panic, I have to carefully
  control my environment: not too much light, not too little
  light, not too much noise, not too many people talking at once,
  not too many sudden changes...

  As a grownup, I've mastered skills to help me do this. So many,
  that it's generally hard to tell me from a neuro-typical person.
  Autistic children have a much harder time. They are constantly
  thrust into new situations, bombarded with sudden sensory
  overload, and have no way to cope. When that happens to me, I
  start to feel like my head is going to explode. If I was five,
  I'd probably throw a tantrum. At 47, I excuse myself, go to the
  bathroom, chill out, and then come back when I'm ready.''

  #autism #aspergers #coping #skills #life #change

  http://www.quora.com/Autism/Why-is-change-difficult-for-an-autistic-person#ans2296969