What Affects the Appearance of Afterimages?

This project is about after-images and what possibly affects them. An after-image is an image that is generated in the eye and stays with you even after you have stopped looking at the object. Human subjects stared at a colored picture for one minute. Then they looked at a blank sheet of white paper and indicated when an after-image appeared.Subjects were instructed to stare at a picture of a green apple with a red leaf and timed for one minute. At the end of one minute subjects were instructed to look at a blank sheet of white paper and indicate as soon as the after-image appeared. A light probe was used to insure that the light was kept within a certain range. Then data was recorded to include age, gender, corrective lenses, time and light intensity. What variables affect the appearance of an after-image in humans?

It is an educational content by education.com.
By clicking on the title of this resource, you will be redirected to the content. If you want to download the project, you just have to join the website, which now is for FREE.