Template: Invisible Boundary
#1
Simple Invisible Boundary

Required Experiment Builder Version: 1.1 or higher
EyeLink Required: Yes
Type: Concept Example
Difficulty Level: Moderate


This example illustrates:
  • How to use Invisible Boundary trigger to detect change in participant's gaze
  • How to use Drift Correct node prior to each trial
Description:

This example illustrates the use of an Invisible Boundary trigger. The initial display screen changes when the gaze position is within a pre-defined invisible boundary. Program exits after 60 seconds or button pad press. If you have no button pad, either wait the 60 seconds, add a Mouse trigger, or press Ctrl+C to terminate the program. See below for an example of multiple repeated Invisible Boundary Trigger.

**Additional detailed information about the project is given in the notes section for most nodes. To see notes for a given node, either mouse over that node or click on it to display the notes window. If the notes window is not visible, go to the "View" drop down menu in Experiment Builder, select "Properties", and check "Note".

Instructions:
  1. Download the InvisibleBoundary.ebz example from this message.
  2. Launch the Experiment Builder application.
  3. Unpack the InvisibleBoundary.ebz file to a location on your Experiment Builder PC with "File menu -> Unpack".
  4. Open the project in Experiment Builder.
  5. Deploy the project to a new folder.
  6. Run the InvisibleBoundary.exe from the deployed directory.


.ebz   InvisibleBoundary.ebz (Size: 27.38 KB / Downloads: 86)



#2
Repeated Invisible Boundaries

Required Experiment Builder Version: 1.1 or higher
EyeLink Required: Yes
Type: Concept Example
Difficulty Level: Moderate

This example illustrates:
  • How to use Invisible Boundary trigger to detect change in participant's gaze
  • How to use Drift Correct node prior to each trial
Description:

This example illustrates the use of multiple repeated invisible boundaries. One display screen is shown when the participant fixates outside of an invisible boundary. The display changes when the gaze position is within the boundary. This goes back and forth until a button response is made or after one minute into recording. Program exits after 60 seconds or button pad press. If you have no button pad, either wait the 60 seconds, add a Mouse trigger, or press Ctrl+C to terminate the program.

**Additional detailed information about the project is given in the notes section for most nodes. To see notes for a given node, either mouse over that node or click on it to display the notes window. If the notes window is not visible, go to the "View" drop down menu in Experiment Builder, select "Properties", and check "Note".

Instructions:
  1. Download the RepeatedInvisibleBoundary.ebz example from this message.
  2. Launch the Experiment Builder application.
  3. Unpack the RepeatedInvisibleBoundary.ebz file to a location on your Experiment Builder PC with "File menu -> Unpack".
  4. Open the project in Experiment Builder.
  5. Deploy the project to a new folder.
  6. Run the RepeatedInvisibleBoundary.exe from the deployed directory.


.ebz   RepeatedInvisibleBoundary.ebz (Size: 26.84 KB / Downloads: 32)