fmri_data_acq
====== Differences ====== This shows you the differences between two versions of the page.
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fmri_data_acq [2016/08/17 21:19] bdelab created |
fmri_data_acq [2017/02/08 21:00] (current) pdonnelly |
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| - | ====Logistics==== | + | ===After MEMP scan=== |
| + | <code>"Okay, great job! We're gonna switch over the game real quick | ||
| + | so hang tight and be still for a minute while get things set up. | ||
| + | Do me a quick favor and without moving your head or looking down | ||
| + | find the button box that we gave you before the scan. Got it? Great."</code> | ||
| + | //(if not, have the technician go in and give them the box)// | ||
| + | ===After booting up MATLAB=== | ||
| + | * Click in the command prompt. | ||
| + | <code>Alright, go ahead and press the button two times | ||
| + | so we know it's working. Great! </code> | ||
| + | ===Describe game:=== | ||
| + | <code>"Alright in this game you're going to see a bunch of images | ||
| + | flashing on the screen. The images are going to be faces, fake words, | ||
| + | and objects. Your job is to pay close attention and whenever you see | ||
| + | the same image flash twice in a row, press the button. | ||
| + | Does that make sense?"</code> | ||
| + | * If they seem confused, say the one-back aspect in different ways: two in a row, repeat, one right after the other, etc. | ||
| + | <code>"Even though I want you to pay attention to the images, make sure | ||
| + | that you're keeping your eyes on the red dot in the middle of the screen. | ||
| + | You should always be looking at that red dot. This might make it a little | ||
| + | harder to pay attention to the images, but just try and do your best."</code> | ||
| + | <code>"Okay, we're gonna start up the game, are you ready? Great, now remember | ||
| + | to be still like a statue - it's super important!"</code> | ||
| + | ===Start game=== | ||
| + | * delete the input from the button presses! | ||
| + | * enter in subject id followed by run # (1 then 2) | ||
| + | * press 1 for 1-back | ||
| + | * press 1 for triggers | ||
| + | * when the gray screen with text shows up, tell the technician it's ready to go! | ||
| + | ===Between games=== | ||
| + | * press enter to exit previous run | ||
| + | * Tell them they did a good job, and that they are going to play one more time | ||
| + | * no matter if they were wiggly or not, remind them to be super still like a statue! | ||
| - | ===Scheduling=== | ||
| - | Be sure to schedule on the DISC calendar using the NLR_fMRI drop-down | ||
| - | ===Materials Needed=== | ||
| - | - USB | ||
| - | - Stimulus computer, charger | ||
| - | - Dongle | ||
| - | - Ensure that WiFi and notifications are turned off on the device being used | ||
| - | - Subject Information; including MRI Screening Form(s), MR Safe Glasses (if applicable) | ||
| - | |||
| - | ===Set-Up=== | ||
| - | - Plug in the "Trigger Output" USB cord to the Stimulus computer | ||
| - | - Plug in the Video VGA Trigger cord to the stimulus computer using the dongle | ||
| - | - Press red "trigger switch" button to switch to the rear green LED light indication | ||
| - | - On the output port console within the glass cabinet on the bottom shelf, press 0, 1, 0, 2, 0, 2, 0, 2 to switch communication between the desktop to the laptop and teh projector in the scanner room | ||
| - | - Switch button press box to work with numbers as opposed to colors | ||
| - | |||
| - | ====Running the Stimulus==== | ||
| - | |||
| - | ===Procedure=== | ||
| - | - open MatLab | ||
| - | - Navigate to runexperimentLocalizer.m | ||
| - | - run the command: runexperimentLocalizer(#, subjid_#) | ||
| - | - you will run the sequence 3 times for each subject. NOTE the scanner itself will trigger the sequence | ||
| - | |||
| - | ===Script=== | ||
| - | Before the first fMRI scan runs, say the following to the subject:\\ \\ | ||
| - | //Alright, [subject name], now it's time to play the game that we practiced.\\ | ||
| - | Really quick, do me a favor and without moving your head or looking down, can you push the button for me?\\ | ||
| - | Remember the first thing you're going to see is a gray screen with a white dot in the middle for a little while.\\ | ||
| - | After about 16 seconds the game will start and you're gonna see groups of images.\\ | ||
| - | They'll either be images of words, objects, or faces.\\ | ||
| - | Your job is to be as still as you can and press the button whenever the image repeats right in a row.\\ | ||
| - | Are you ready? ... [wait for subject response] ... Alright!\\ | ||
| - | Remember from now until you can't hear the machine running anymore you need to be as still as you possibly can.\\ | ||
| - | Try your best to wait until the end to scratch an itch and swallow.\\ | ||
| - | Got it? ... [wait for subject response] ... Awesome.\\ | ||
| - | Here we go!//\\ \\ | ||
| - | In between each run, say the following:\\ | ||
| - | //How was that one, [subject name]?\\ | ||
| - | Are you ready for the (next/last) run? ... [wait for subject response] ...\\ | ||
| - | Great! Remember to keep as still as you possibly can. Here we go.//\\ \\ | ||
| - | If the subject moves during a scan, depending on the amount of movement either add extra stress before the next run, or stop the scan and re-run after reminding him/her to be very still. | ||
fmri_data_acq.1471468754.txt.gz · Last modified: 2016/08/17 21:19 by bdelab
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