The concept of the human aura is not new. The idea that the human body ‘shines’ with its own light goes far back in history. While not exactly Christian, the aura has been associated with Zoroastrian kings, a religion that is recorded as far back as the fifth century BC. There may be associations with the concept of the aura found in Bible and is sometimes referred to as the "body of light." And, while there is no mention of halos in the Bible, we see them often depicted in drawings and stained glass windows.
In AURA, Jacob is blind and yet able to see the aura of living and once-living things. The real question is, does the aura exist? That is still up for debate. One of the only ‘proofs’ that such an emission of energy surrounds the human body is Kirlian photography.
This is, supposedly, an actual Kirlian photograph.
This is taken directly from one of my favorite sources Wikipedia, “In 1939, two Czechs, S. Pratt and J. Schlemmer published photographs showing a glow around leaves. The same year, Russian electrical engineer Semyon Kirlian and his wife Valentina developed Kirlian photography after observing a patient in Krasnodar hospital who was receiving medical treatment from a high-frequency electrical generator. They had noticed that when the electrodes were brought near the patient's skin, there was a glow similar to that of a neon discharge tube.” https://en.wikipedia.org/wiki/Kirlian_photography
In the world of AURA, our hero doesn’t need anything ‘electrically stimulating’ a body or leaf to see the aura. Jacob’s reality is that this is how the world is, and he can manipulate our reality because his is malleable.