· Humans are able to capture an expression in 12 milliseconds.
Helen Briggs BBC, Ciencia 27/12/ 2008 http://news.bbc.co.uk/hi/spanish/science/newsid_7800000/7800802.stm
Our brain digests much more information than what we perceive. So it is with visual stimuli: The information enters our eyes the conscious brain areas processing, while other regions of our unconscious. Beatrice de Gelder spent years researching in this area from Harvard, in the U.S., and Tilburg, the Netherlands. Which shows that the sense of sight is closer to intuition and emotions.
A team of scientists discovers that a man after going blind, suffering a stroke, is able to overcome obstacles, thanks to brain hidden connections. This study also demonstrates that use subconscious mental resources and that we are able to do things that we think we can not do. The patient, identified as TN, has a corneal alteration in both hemispheres of the brain after suffering consecutive spills. His eyes are fully trained to see, but your brain can not process the information sent, leaving him completely blind, this is called “blindsight”, the ability to perceive objects and occurrences without being aware that you are viewing. However, when he does walk with a cane to avoid obstacles, and requires guidance from others. Scientists have made an experiment by an obstacle course and TN overcame all without any help.
When he started investigated “blindsight” was not really taken seriously by scientists began to take seriously from the 70s when they began experimenting with monkeys. Scientists experimented with TN to put helmets so he could not hear anything, but nevertheless was also able to dodge objects, it was not so, when the scientists put on to TN the dark glasses, began to collide with objects, which means that eye must be perfect for that visual information can reach the eyes. A part of the main route, the visual cortex, there are other different visual pathways, which Beatrice de Gelder began to study, also found with other patients, although they are not able to see anything, they responded with emotion and gestures or body expressions . She is also investigating with people who have no vision problem, we can see an expression of anger in 12 milliseconds, yet we are not aware that we saw the expression. This is closely linked to intuition but our culture does not trust the intuition need solid evidence.
In conclusion, it seems that our brain is ready to process more information quickly, but we are not aware of that. This is closely linked with the unconscious and intuition. The visual system also goes beyond the image itself. I chose this topic because I find it very interesting how the brain works, the part of the unconscious, and the details that go by our eyes in less than a second, and we are not able to assimilate of that, but our unconscious yes.