When someone is trying to focus on one job or trying to remember a picture of it at the same time the person in question would not be able to pay attention to everything around them or some kind of ‘blinded’.
A new study from the UK also found one of the causes of a phenomenon called an attention blindness (inattentional blindness) is. According to researchers, focus the mind or remember something is enough to make people not aware of the other things that happened or are in vicinity.
“One obvious example relevant to this finding is a condition that occurs in people who are trying to follow the directions of satellite navigation devices (GPS) while driving,” said Nilli Lavie, Ph.D. from the University College of London, who led the study.
“Our study shows that when we focus on something or have just given the direction we see on the GPS screen would make us more likely to fail to pay attention to the dangers around the road that we passed, for example, we probably did not know there was a motorcycle or pedestrian approaching being crossed, although we appear to be looking forward, “said Lavie.
For the conclusion, the researchers used functional magnetic resonance imaging scans (fMRI). The device is enabled to observe the participants’ brain activity when they were given the task of remembering a picture. In the middle of the task, the researchers also asked the participants detected a flash of light is directed at them.
As a result, when participants were preoccupied with the task of remembering the picture, they had failed to notice a flash of light which meant researchers, though no other objects were shown to participants at that time.
But otherwise when participants were not given any task, they can detect the flash of light that easily. This suggests that participants experienced ‘blindness induced by the load of mind’ (load induced blindness).
When it was scanned with fMRI, the researchers found a decrease in the activity of one of the brain responsible for processing visual information entering the primary visual cortex (primary visual cortex).
“‘Blindness’ was apparently caused by a disturbance in the incoming visual messages to the brain in the early stages of the course of the flow of information to the brain. Means that when the eye can ‘see’ an object, the brain just does not see it or maybe too late to see the object in question,” said Lavie as reported psychcentral, Monday (10/08/2012).
Researchers also suspect this is due to competition for brain information processing power of the stock is limited or so-called ‘theory of burden’ (load theory). The competition took place between the new visual information with human visual memory is short term.
But the allegation is deemed able to explain why the brain failed to detect a striking event in human vision even when the attention has been focused on a single task that involves such a high information load.