"There's that blotch of really bright light up in the corner of the picture that gets most people's eyes to filter out the black and blue and see it in a different way," he said.
"Being sensitive to that kind of possibility helps us be more sensitive to the context from which we evaluate beliefs and premises and propositions."
Sorrell, who initially saw the dress as gold and very pale blue, said it was intriguing, given it was very difficult to change the way you saw the colours.
Not surprisingly, students took to social media as soon as the dress went up on the lecture theatre's large overhead screens.
Sarah Jack posted on a university Facebook page: "Oh god. Make it stop."
Jacqueline Murrey was equally unimpressed: "Will it ever stop? Turn off the lights and THE DRESS IS INVISIBLE."
Sorrell said the students were generally taken aback when it went up on the screen.
The bodycon dress sold out of all sizes and colours within 30 minutes of becoming an internet sensation in February. It is now back in stock on British online store Roman Originals for $102.95.