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13 Glossary

A

ActiView:

Acquisition:

Acquisition computer:

Audio Midi Setup:

Action:

Application (of BrainStream):

Argument:

B

Block: Every session is divided into different functional blocks. Every 'block' can have a different purpose, e.g. one block for training, one for online feedback, etc.

Block file: To initiate your experiment in BrainStream, you need to compose an initialization run file(s), also called a block file. Every block has a separate file, which contains or refers to all information needed to initiate the particular block.

Brainstream:

C

Constants (in user-defined functions):

D

Data segment:

Data selection:

Dictionary:

E

Event:

Experiment: Most BCI experiments involve measurement of several different subjects. Also, BCI experiments can consist of multiple measurements using the same subject each time (i.e. 'sessions'). Every session is divided into different functional blocks. Every 'block' can have a different purpose, e.g. one block for training, one for online feedback, etc. Every block consists of a set of several 'sequences'. Every sequence is self-paced meaning that the participant can push a button to start the next sequence. A sequence is defined as a succession of certain stimuli (e.g. a sequence of tones to generate an auditory evoked potential or a sequence of different motor imagery tasks). These stimuli can be named 'tones', 'trials', 'stimuli', 'epochs', etc. If you take these definitions into account, the hierarchical structure of a common BCI experiment summarizes to 'Experiment' --> 'Subject' --> 'Session' --> 'Block' --> 'Sequence' --> 'Stimulus'. These definitions will be used throughout this documentation. Moreover, this hierarchical structure can serve as a template to arrange locations for data storage.

Experiment definition file:

Experiment file: If experiments involve execution of several blocks, references to those blocks can be put together in a single text file, in which every .blk file is denoted in one row. The text file has to be saved with the extension .exp.

F

Field:

Function:

G

'Get' statement:

Global variables:

Graphical User Interface (GUI):

H

I

J

K

Key:

L

'Load' statement:

M

Markers:

Matlab:

Midi:

MMM Lab:

Modules of functions:

N

O

P

Path:

'Put' statement:

Q

R

S

'Save' statement:

Screen Sharing:

Sequence: Every block consists of a set of several 'sequences'. Every sequence is self-paced meaning that the participant can push a button to start the next sequence. A sequence is defined as a succession of certain stimuli (e.g. a sequence of tones to generate an auditory evoked potential or a sequence of different motor imagery tasks).

Server:

Session: Multiple measurements using the same subject each time.

Stimuli: 'tones', 'trials', 'stimuli', 'epochs', etc.

Stimulus computer:

String:

Structure:

T

Terminal:

Topic:

Trunk:

U

User-defined functions:

User variable:

V

Variables:

Verbosity level:

W

X

X11:

Y

Z

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Topic revision: r2 - 02 Sep 2009 - 12:06:27 - MarianneSeverens
 
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