Template: Saccadic Adaptation
Basic Saccade Adaptation Task

Required Experiment Builder Version: 2.3 or higher
EyeLink Required: Yes
Type: Concept Example
Difficulty Level: Easy

This example illustrates:
  • How to implement a basic saccade adaptation task
  • How to use a Sample Velocity Trigger to detect saccade onset
  • How to implement a pseudo drift-check
  • How to position targets based on degrees of visual angle rather than pixel coordinates
  • How to use TARGET_POS messages to enhance trial visualization in Data Viewer

The example runs 3 Blocks of trials. The first and last blocks run 50 basic prosaccade trials. The middle block runs 150 trials in which the target either steps inwards or outwards by 5 degrees during the initial target directed saccade. A "skip_first_block" variable can be set to TRUE to skip the first block. Target and Step positions are set (in degrees of visual angle) via the Data Source attached to the TRIAL sequence. A Splitting Column allows the experimenter to choose whether the step is inwards or outwards.

**Additional detailed information about the project is given in the notes section for some 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".

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

.ebz   SaccadicAdaptation.ebz (Size: 42.96 KB / Downloads: 37)