In Thinking Fast and Slow, Daniel Kahneman demonstrates how quick our minds are and how fast they react to potential dangers and threats by showing us two very simple pictures of eyes. The pictures are black squares, with a little bit of white space that our brains immediately perceive as eyes, and beyond that immediate perception of eyes, our brains also immediately perceive an emotional response within the eyes. They are similar to the simple eyes I sketched out here:
In my sketch, the eyes on the left are aggressive and threatening, and our brains will pick up on the threat they pose and we will have physiological responses before we can consciously think through the fact that those eyes are just a few lines drawn on paper. The same thing happens with the eyes on the right, which our brains recognize as anxious or worried. Our body will have a quick fear reaction, and our brain will be on guard in case there is something we need to be anxious or worried about as well.
Regarding a study that was conducted where subjects in a brain scanner were shown a threatening picture for less than 2/100 of a second, Kahneman writes, “Images of the brain showed an intense response of the amygdala to a threatening picture that the viewer did not recognize. The information about the threat probably traveled via a superfast neural channel that feeds directly into a part of the brain that processes emotions, bypassing the visual cortex that supports the conscious experience of seeing.” The study was designed so that the subjects were not consciously aware of having seen an image of threatening eyes, but nevertheless their brain perceived it and their body reacted accordingly.
The takeaway from this kind of research is that our environments matter and that our brains respond to more than what we are consciously aware of. Subtle cues and factors around us can shape the way we behave and feel about where we are and what is happening. We might not know why we feel threatened, and we might not even realize that we feel threatened, but our heart rate may be elevated, we might tense up, and we might become short and defensive in certain situations. When we think back on why we behaved a certain way, why we felt the way we did, and why we had the reactions we did, our brains won’t be able to recognize these subtle cues that never rose to the level of consciousness. We won’t be able to explain the reason why we felt threatened, all we will be able to recall is the physiological response we had to the situation. We are influenced by far more than our conscious brain is aware, and we should remember that our conscious brain doesn’t provide us with a perfect picture of reality, but nevertheless our subconscious reacts to more of the world than we notice.