OpenEEG Signal Element

Summary ¶

	OpenEEG Signal
Info
Category:	Signal Acquisition		AddIn:	Signal Processing
Creator:	OkazoLab		Scope:	Experiment
Owns Snippets:	None		Usage:	Snippets

Properties ¶

Name	Description	Constraints	Type	On runtime change
Port Settings
Port Name	Defines the name of serial port that is connected to EEG hardware	Design Time..	String
Baud Rate	Defines the serial baud rate (samples per second) of the serial port	Design Time..	Int32
Stop Bits	Defines the number of stopbits per each transferred byte	Design Time..	StopBi..
Parity	Defines the parity-checking protocol for the port	Design Time..	Parity
Data Bits Number	Defines the number of data bits in each transferred byte	Design Time..	Int32
Signal Generator
Signal Source	Defines a source for the signal. The emulated rhythmes can be used for offline validation of the chosen analysis settings	Design Time..	enEmul..
Emulated Sampling Rate	Defines the emulation sampling rate (samples per second), when data is generated or streamed from a file.	Design Time..	Double
Primary Frequency	Defines the frequency of the primary rhythm in the generated signal, in Hz. Assign the zero to exclude the primary frequency from the generated signal.	Design Time..	Double
Secondary Frequency	Defines the frequency of the secondary rhythm in the generated signal, in Hz. The secondary frequency magnitude is a half of the primary frequency magnitude. Assign the zero to exclude the secondary frequency from the generated signal.	Design Time..	Double
Noise Level	Defines the noise level (in % to the norm magnitude of the primary frequency). The noise is added to the generated signal. Assign the zero the exclude the noise from the generated signal.	Design Time..	Double
External Datafile	Opens the dialog for selecting a data file containing a stream of double numbers representing a signal. If a file name without a path is defined, the data file will be picked up in the location of the experiment file.	Design Time..	String
Channel Configuration
Selected Channels	Defines what signal channels are selected for acquisition within EventIDE. Selected channels are registered in the EventIDE signal pool at runtime and become available for the signal analysis elements.	Design Time..	IList
Selected Channel Count	Indicates how many signal channels are currently selected for acquisition	Status..	Int32
Total Channel Count	Indicates how many signal channels are available for acquisition in the total	Status..	Int32
Buffer Size	Defines the size (in samples) of a circular buffer that stores incoming signal data.	Design Time..	Int32
Runtime Control
Reset Signals Now	Runtime commands that resets the signal buffers and data acquisition	Runtime Command..	Boolean
Control
Is Enabled	If set to false the element is completely omitted when the experiment is run	Design Time..	Boolean
Title	Title of the element	Design Time..	String

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Description ¶

Practical Use ¶

1. Add a new OpenEEG Signal element to any event in your experiment (the element is global and works from the start to the end of experiment).
2. Select the added element to browse its properties in the Property panel.
3. Enter the system name of the serial port connected to your EEG hardware, e.g. 'COM1', 'COM2', etc.
4. Adjust the parameters of the serial port transmission, if necessary.
5. Select the channels for acquisition and buffering within EventIDE via the Selected channels property.
6. Once the channels are selected, you can access them with by of the signal processing elements.
   

Notes ¶

• In order to use OpenEEG element, you should have EEG hardware supporting the OpenEEG protocol. The hardware must be connected to your computer and be operational both at run-time and design-time (when the acquisition channels are selected).