Make sure open this page full screen only in the Firefox browser.
Make sure to disable the Ad Blocker on this website.
Click Start button to input your participant number on next page.
Scroll the mouse wheel to select the most pleasing depth structure according to your taste.
When you make your decision, press the Next button to continue.
The next image will load automatically after click.
Please download the record file by a link when you are done.
Name the file as YourNumber.txt and send it to me by email please.
45 trials in total.