2022 SECD Research Roundup - Augmentative & Alternative Communication Translation Lab

Kelcey Buck Author

03/07/2022 Added

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The Augmentative and Alternative Communication Translation (AACT) Lab focuses on the development and implementation of AAC devices for adults and children with severe physical impairments. In this video, Austin Spoor, a graduate research assistant in the lab, discusses two of the current studies using brain-computer interface technology – one for children and one for adults.

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[00:00:00.250]So, this right here,
[00:00:02.002]this display we have is for our
[00:00:04.045]um, the study we do with kids.
[00:00:06.172]So, we have a array of six objects on the screen,
[00:00:10.135]and we'll tell them
[00:00:11.553]that there's going to be one they're looking for.
[00:00:15.265]And so, in this case, it's going to be that lamp.
[00:00:18.518]And we'll show it to them
[00:00:20.478]three times.
[00:00:21.855]So we'll say, "That
[00:00:22.772]cord's going to pull down and the light's going to come out."
[00:00:27.318]And then they're watching
[00:00:29.154]as all the objects are moving
[00:00:30.822]just for that lamp
[00:00:32.407]to move.
[00:00:33.533]And we tell them, "Every time that lamp
[00:00:35.869]does that, you get excited, you count in your head."
[00:00:38.663]um
[00:00:39.456]And so you'll
[00:00:40.915]see it move like six times
[00:00:42.500]throughout this little trial,
[00:00:44.002]um, and then it goes to just a rest screen
[00:00:46.588]and we have, like,
[00:00:47.464]little cats and dogs or giraffes and whatnot.
[00:00:50.300]um
[00:00:51.092]And then let them relax,
[00:00:52.677]get their wiggles out because
[00:00:55.180]muscle movement interferes with um
[00:00:58.516]It kind of gets in the way of
[00:00:59.726]of seeing those brain waves
[00:01:01.102]because they're both electrical but the muscles are
[00:01:03.188]a little stronger,
[00:01:04.105]in terms of what we pick up.
[00:01:05.607]And then we just go to the next one.
[00:01:07.025]And we say, "This time the phone's going to ring.
[00:01:09.527]It's going to look just like that.
[00:01:10.987]It's going to ring."
[00:01:13.281]And then we'll start it.
[00:01:15.366]And it'll go through again.
[00:01:16.868]Everything will move and they pay attention to the phone.
[00:01:19.454]And then we'll do the same thing again.
[00:01:21.164]But this time, instead of it moving,
[00:01:24.167]it's just going to be highlighted.
[00:01:26.711]And I can show you that.
[00:01:34.928]So, this time,
[00:01:35.678]you're looking for the telephone again,
[00:01:37.430]but it's just going to have that green line around it.
[00:01:40.225]So, just watch
[00:01:41.518]and everything else is going to be highlighting,
[00:01:43.770]but you just pay attention to the telephone.
[00:01:46.523]Every time it highlights,
[00:01:48.108]count in your head, get excited, that type of thing.
[00:01:52.195]And then that'll go through.
[00:01:53.571]They'll get another rest period.
[00:01:55.115]And we'll go through
[00:01:56.783]until there's been six runs
[00:01:59.702]where
[00:02:00.620]they just
[00:02:01.538]look for the phone,
[00:02:02.330]and then the next run they'll be looking for maybe the dog,
[00:02:04.707]and it's all randomized.
[00:02:05.959]And then they just get to look at their screen with
[00:02:08.002]giraffes and cats and
[00:02:09.629]um, get ready for the next one.
[00:02:11.506]For the adult study,
[00:02:13.216]um so the
[00:02:14.592]participant is sitting here with the cap on their head,
[00:02:17.387]and for the calibration,
[00:02:19.347]it'll go through each letter
[00:02:21.266]and it'll flash
[00:02:22.809]um every single row 10 times
[00:02:25.270]and every single column 10 times.
[00:02:27.856]And it'll tell them what letter they're looking at.
[00:02:30.108]So, it starts with the letter Q.
[00:02:32.610]And it'll go through all the flashes.
[00:02:35.029]And then once that's done,
[00:02:36.865]it's going to move on to the letter U.
[00:02:39.617]And so, then the participant
[00:02:41.619]just looks for the letter U
[00:02:43.872]and they find it right there.
[00:02:45.957]And then they're sitting here looking.
[00:02:48.835]And now it's ready for the letter U.
[00:02:51.254]And then every time
[00:02:52.297]either a row or a column of those Einstein heads flashes,
[00:02:56.384]they're supposed to
[00:02:57.719]get excited, count in their head.
[00:02:59.679]Um, and try to count
[00:03:01.890]every time that happens and then that
[00:03:04.017]is supposed to make that P300 wave in their mind,
[00:03:07.395]um, which gets picked up by the cap
[00:03:09.647]and we record it.
[00:03:11.232]And then we go through and
[00:03:13.318]analyze all the data
[00:03:14.777]to see, um,
[00:03:16.863]specifically how their brain is responding
[00:03:19.157]when they're looking for the letter U.
[00:03:21.242]And every time the U flashes
[00:03:23.036]and the brain kind of correlates those two it says
[00:03:25.997]we know they're looking for the letter U
[00:03:27.874]because this is the calibration.
[00:03:29.959]So, every time
[00:03:31.419]that we flash the U, what is their brain doing
[00:03:33.963]in terms of this P300 wave?
[00:03:36.549]Um, and then it goes through all of that
[00:03:38.801]and then we will do
[00:03:40.261]uh, a couple more tests
[00:03:42.931]where
[00:03:43.973]they have a list of words
[00:03:45.808]that they're spelling.
[00:03:46.726]And then we'll do a test where
[00:03:49.103]we just ask them a question
[00:03:50.396]and they respond
[00:03:51.439]without speaking.
[00:03:52.649]So, we say, like,
[00:03:54.525]"What are you doing after dinner tonight?"
[00:03:56.903]And they'll just write on there like,
[00:03:58.154]"I'm watching the news." or something.
[00:04:00.323]And so then that way they actually get to see
[00:04:03.034]it come to life.
[00:04:03.785]And that's usually when they get kind of excited.
[00:04:05.453]It's like, "Oh!
[00:04:06.537]I can actually communicate with this.
[00:04:08.164]It's not just
[00:04:09.540]I'm saying what the computer tells me to say."
[00:04:12.377]Um, and so we'll get
[00:04:13.878]20 letters from that.
[00:04:15.380]And then they're done.

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2022 SECD Research Roundup - Augmentative & Alternative Communication Translation Lab

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