Let's stop with the "mind reading" warnings before they get too far out of hand and consider what's really happening: Six subjects were shown a "training" corpus of images first. Then shown new images. By comparing the subjects' responses to the new images, the software in the study presumably did its best to create composite images by pulling from the corpus.
So this raises many questions: How diverse were the faces in the training corpus? How close were the new images to those in the corpus? When you're looking at hundreds of images to train the machine, are you also unknowingly being trained to think about images in a certain way? What happens when you try to recreate faces based on the fMRI responses of subjects who didn't contribute to the initial training set?
The implications of the last question are pretty interesting . If different people have different brain responses to looking at the same image, does that help us begin to understand why you and I can be attracted to different types of people? Does it help begin to explain why two people can experience the same event but walk away with two completely different interpretations?
So this raises many questions: How diverse were the faces in the training corpus? How close were the new images to those in the corpus? When you're looking at hundreds of images to train the machine, are you also unknowingly being trained to think about images in a certain way? What happens when you try to recreate faces based on the fMRI responses of subjects who didn't contribute to the initial training set?
The implications of the last question are pretty interesting . If different people have different brain responses to looking at the same image, does that help us begin to understand why you and I can be attracted to different types of people? Does it help begin to explain why two people can experience the same event but walk away with two completely different interpretations?