Tessa Lee: Technical Artist

Wednesday, December 5, 2012

Perception Versus Perspective

My latest Unity 3D project is now available via my online portfolio.  Click here to play it!

A 3x3 grid with two "distractor "blocks, and no target.
This project was brought to me by Jon Amakawa, my former instructor at the Art Institute of Pittsburgh.  The client, Columbia University of New York, needed a program to assist in conducting their study on the response time when searching for the target block (T) among blank blocks, and distracting blocks (L).

The finished product was capable of being completely customized by the client.  They can control the grid size, number of  "distractor" blocks displayed per trial, number of total trials, how many times the target gets shown among the trials per session, and more.

Super Random!!! Ahhh!

  • The order of trials in which the target block appears is randomly chosen.  It could be any two out of five, for example.
  • The amount of displacement of the blocks' position in their grid are random.  Some are moved a little right or left, up or down, or tilted to the left or right.
  • The block that displays the target (T) is randomly chosen, if it is displayed at all.
  • The blocks that display the distractions (L) are randomly chosen.
Awesome results, you say?
The finished product also produced results that were hidden from the participant in the form of a CSV file.  Each file is individually named based on the subject number and session number.  The subject number is specific to each build, while the session number increments each time the participant chooses to continue on another session of the same build.

Other results include the response time of the participant per trial, whether or not there was a target displayed in the trial, and which button the participant responded with.  This information yields such information such as if the participant was correct in spotting a visible target, correct in deciding that there was no target when one was not displayed, incorrect if the participant thought they saw a target when one was not displayed, or incorrect if the participant did not find the target when one was displayed.

This project was a fun one.  Thank you, Mr. Amakawa for entrusting me with it.