Mouse Tracker Element

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Modified on 2018/08/02 23:38 by Administrator Categorized as Base Elements, Elements, Mouse Touch Joystick

» Mouse Tracker Element

Summary ¶

	Mouse Tracker
Info
Category:	Mouse Touch Joystick	AddIn:	Base Layer
Creator:	OkazoLab	Scope:	Experiment
Owns Snippets:	None	Usage:	Snippets

Synchronized actions ¶

Epoch	Actions
On Experiment Start	Starts processing tracker samples
On Experiment Start	Stops processing tracker samples

Properties ¶

Name	Description	Constraints	Type
Settings
Input Device	Defines what pointing devices can provide input to the mouse tracker	Normal..	enMous..
Show Cursor In Calibration	Defines whether the mouse cursor is shown during the GLM calibration procedure	Normal..	Boolean
GLM Calibration
Run GLM Calibration	Runs the GLM calibration procedure, which calculates two pairs of linear coefficients for mapping of the tracker input into the screen coordinates. The calculated coefficients are automatically applied at runtime.	Design Time..	Boolean
Gain X	Defines the gain coefficient for the X axis in the GLM calibration model: X='GainX'*x+OffsetX	Normal..	Double
Gain Y	Defines the gain coefficient for the Y axis in the GLM calibration model: Y='GainY'*y+OffsetY	Normal..	Double
Offset X	Defines the offset coefficient for the X axis in the GLM calibration model: X=GainX*x+'OffsetX'	Normal..	Double
Offset Y	Defines the offset coefficient for the Y axis in the GLM calibration model: Y=GainY*y+'OffsetY'	Normal..	Double
Save Calibration Now	Provides a runtime command that saves the current GLM calibration into a XML file. To run the command at runtime, assign a file name to this property.	Runtime Command..	String
Load Calibration Now	Provides a runtime command that loads the GLM calibration values from a XML file. To run the command at runtime, assign a file name to this property.	Runtime Command..	String
Drift Correction
Recalibrate Now	Runtime command that helps to correct drifts in tracking data.Correction is done by recalibration of the latest tracker position into a custom screen point defined by the 'Recalibration Point' property.nAs result, the offsets of the GLM calibration get adjusted (but not gains) to compensate a drift in further data.	Runtime Command..	Boolean
Recalibration Point	Defines the screen point to which the tracker position will be recalibrated on calling 'Recalibrate Now' action. The default auto value always denotes the screen center.	Normal..	clPoint
Filters
Smoothing Ratio	Defines a ratio for the fast FIR smoothing filter, which is applied to the gaze tracking within EventIDE. The filter convolves every new tracking position with the previous ones. The property value defines a tap weight for the previous data, such that the convolution looks like: X=(Xn(1-Ratio)+Xn-1Ratio)/2. The value has to be positive and less than 1 (0 means no filtering).	Normal..	Double
Logging
Log Folder	Opens the dialog for selecting a local folder that will hold all tracking logs	Runtime Command..	String
Open Log Designer	Opens a designer window where the log format can be defined.	Design Time..	Boolean
Is Logging	Defines whether logging is turn on/off.The value can be changed at any moment at runtime allowing selective logging during the relevant periods only.	Normal..	Boolean
User Field	Defines the custom user data that is added to every line in the log file. The property can be used for recording varying status information (e.g. trial number) together with the tracker data. The string value may contains multiple fields separated by delimiter.	Normal..	String
Runtime
Radar Point	Returns the newest calibrated tracking position provided by the tracker at runtime	Normal..	clPoint
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

¶

The Mouse tracker element records a complete trajectory of mouse movements relatively to the stimulus screen. In case of unexpected failures in recording, you may need to increase the timeout value (in ms) of DWord key 'HKEY_Current_User\Desktop\LowLevelHooksTimeout' in Windows Registry

Table of Contents [Hide/Show]

Summary
Synchronized actions
Properties

Description
Snapshots
Practical Use
Technique 1

Description ¶

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Snapshots ¶

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Snapshot 2

Practical Use ¶

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Technique 1 ¶

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Step 2
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=== Technique 2 ===
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Step 2
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 // Check the trial outcome. Result and RT just other user variables

// insert code snippet here..

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== Notes ==
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Insert Notes here..
Insert Notes here..

	Name	Size
	Mouse-Tracker-Element-Icon.png	4.30 KB

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