09-09-2020, 12:54 PM
Variable Fixation
Required Experiment Builder Version: 1.6.121 or higher
EyeLink Required: Yes
Type: Complete Example
Difficulty Level: Easy
This example illustrates:
This example illustrates how to set a variable duration for a fixation screen across trials. A trial initially shows a fixation screen with a single fixation dot. The duration this fixation is shown varies across trials, for example any where between 500 and 1500 msecs, after which a picture is shown. This shows the use of the Update_Attribute action node for generating random variables.
Instructions:
variableFixation.ebz (Size: 299.86 KB / Downloads: 26)
Required Experiment Builder Version: 1.6.121 or higher
EyeLink Required: Yes
Type: Complete Example
Difficulty Level: Easy
This example illustrates:
- How to use Python function random.randint() to generate a random fixation duration
This example illustrates how to set a variable duration for a fixation screen across trials. A trial initially shows a fixation screen with a single fixation dot. The duration this fixation is shown varies across trials, for example any where between 500 and 1500 msecs, after which a picture is shown. This shows the use of the Update_Attribute action node for generating random variables.
Instructions:
- Download the variableFixation.ebz example from this message.
- Launch the Experiment Builder application.
- Unpack the variableFixation.ebz file to a location on your Experiment Builder PC with "File menu -> Unpack".
- Open the project in Experiment Builder.
- Deploy the project to a new folder.
- Run the variableFixation.exe from the deployed directory.
variableFixation.ebz (Size: 299.86 KB / Downloads: 26)