Speech Research » Cognitive tests

h1. Cognative Tests

h2. n-Back test.

h3. About

Under repository\n_back\About\N-Back Test.pdf is useful information about the project. We suggest you read it before embarking on the rest of the assignment.

h3. Software

The chosen software for this application is Python, using version 3.3.1

Modules used for the project where:

- PySide, for menus activities. Using Qt. (not a major issue so not included currently, revise later)

- PyAudio, for audio activities.

- PyGame, for the visual activities

Some configurations were applied to fit the screen according to the paper this experiment is based on. 

The screen is a DELL: 1905fp - series [approx 41.5x41.5 http://reviews.cnet.com/lcd-monitors/dell-ultrasharp-1905fp/4507-3174_7-31232074.html ]

In order to convert we assume the following:

* Box in degrees 1.8 x 2.3

* Distance from screen: 0.6 m

* Box: 1.88 x 2.44 cm*

* Using "http://www.unitconversion.org/typography/pixels-x-to-centimeters-conversion.html" we get

* Pixels: 71 x 91

/* The calculations are: size = 2*(length from screen)* sin[(given angle)/2]</b>

h3. How to run

Through the repository go to n_back and download the "N-Back.zip" file. 

After downloading unzip. Open the N-Back folder and find the file "blackBox.exe" and run.

h3. How it works

After running the file to start the program (see: "How to run") you are prompted to enter subject number from 1-99. 

The program then checks if the name is taken, if not taken it creates a directory in the same directory you keep the the program. If the number is taken the program prompts a question to ask if you want to overwrite the folder, choose "y" for yes and "n" for no. If "n" is chosen then the program will exit.

Assuming that you have a legit file name and the directory has been created the test will begin. 

First we have a black screen with text preparing the subject for the coming test. 

Press space to start the first part of the test.

There are 3 test parts each composed of 6x20 figures running time approx 7.30 min - total running time for experiment > 22. min.

A time marker is added to a log for the following actions

 * Recording Start

 * Test starts

 * box shown on screen

These markers are saved in a file for the subject.

Between tests there is a prompt screen asking for space to continue. Each time space is pressed the recording starts and a marker is added. 

When the test is finished the markers are all put in one file.

h2. Stroop

h3. About

The stroop test was designed and implemented by dr. Jón Guðnason, and is currently under evaluation and changes in the hands of the developers.

h3. Software

The program was written and is operated on Matlab.