A Human Brain Can Only Perform Two Tasks at Once


Brain Health Tips – Doing many things at once (multitasking) becomes a habit for many people. But doing more than two tasks will not get maximum results, because the human brain is designed to only work a maximum two tasks at once.

A study shows brain sections of the medial prefrontal cortex (MFC) will share half when there are two tasks that must be done together.

But when there is another task to do, the brain will experience disorder and will not focus on the task.

“These results show that we can easily perform two tasks such as cooking and talking on the phone. But if there are more than two tasks done, then what happens is the arising of chaos,” said Etienne Koechlin researcher from the Universite Pierre et Marie Curie in Paris, France, as quoted from LiveScience.

Researchers involved 32 participants who are given tasks and are equipped with functional magnetic resonance imaging (fMRI) to scan his brain.

Researchers saw when given double duty, the MFC divides the task. One hemisphere of the brain was doing great and showed activity, whereas the other region does a smaller tasks.

Then the researchers gave one more task so that there are three things to be done. Apparently a decrease of accuracy of existing subjects showed. The results of this study have been published in the Science journal.

“Basically the brain behaves as if each of the frontal lobe is responsible for pursuing its own goals. Thus each hemisphere is busy running one task and there is no place for the third task,” Koechlin said.

These results explain why humans would find it difficult or time consuming to make a decision if there are more than two points of the underlying.

If there are three or more choices, the subjects tend not to evaluate them rationally but only to eliminate until there are only two remaining options.