Human brain can recognize deepfakes, but consciousness blocks this ability

(ORDO NEWS) — The human body is capable of physiologically responding to false images. However, consciousness deceives us, preventing us from understanding and analyzing what we see.

A study by Australian scientists has shown that our brains are adept at recognizing complex deepfakes, even when we believe the images we see are real.

It turned out that the reactions to images of existing people and those generated by a realistic neural network are different – and this is read using an electroencephalogram (EEG).

Research details

The results were obtained from tests designed to evaluate human response to deceptive images, including images of clearly false faces, cars, interiors. Interestingly, this works even in the case of inverted images.

It turned out that even with a cursory glance, the brains of observers could recognize fake faces. However, the people themselves found it more difficult to distinguish between a real person and a fake one, and in some cases they considered the fake pictures to be more real than the real ones.

While the brain can recognize the difference between real and realistic faces, observers cannot consciously tell them apart.

Our findings about the dissociation between brain response and behavior influence how we study the perception of fake faces, the study authors say.

Experts compare this to the reaction of people with prosopagnosia , who lose the ability to recognize people’s faces, even if they have known them all their lives.

At the same time, the ability to recognize a person by such features as gait, hairstyle, voice, posture, and manner of dressing is preserved. Object recognition is also preserved.

In the work, the researchers used images created by Generative Adversarial Networks (GAN) shared by NVIDIA. The data set included 25 people, cars, and bedrooms with render levels ranging from “unrealistic” to “realistic”.


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