The Afterimage Effect occurs when you stare at a visual stimulus for an extended period and then look away, resulting in a lingering image in your vision. This phenomenon happens because the photoreceptors in your eyes become temporarily fatigued, causing them to send signals to your brain that create a ghostly image of the original stimulus. For example, if you gaze at a bright red object, like a red apple, and then shift your focus to a white surface, you may see a greenish afterimage. This effect illustrates how our visual system processes colors and light, revealing the complexities of human perception.