The brain may be able to make up for what is not enough to be heard

noise everywhere, but the impact doesn't seem to be too great. Even in the face of roaring motorcycles and screaming children, your brain can record conversations, in part because the brain can fill in some gaps by predicting what's next, according to a new study.
the human brain has evolved many ways to overcome the disruption caused by the real world. Matthew Leonard of the University of California, San Francisco.
since the 1970s, scientists have found that the brain can "fill in" unsheard parts of the conversation, but no one knows how this is done. To find out, Leonard's team played participants partially obscure or unheard statements to see how their brains responded.
and the participants in the trial were people with epilepsy, who had previously been implanted with hundreds of electrodes to monitor their symptoms. These electrodes monitor both epilepsy and other types of brain activity.
researchers replaced the middle parts of "faster" and "factor" with noise and asked participants to record which word they heard. Data from electrode records show that an area of the human brain called the lower forehead cortectal can help predict which word to hear. Moreover, its processing speed is about 1/5 second earlier than when the python starts processing the sound information that people hear.
, but while this predictive power may seem clever, the researchers say it also has limitations. The brain is unable to use the context of the conversation to improve the accuracy of its predictions. (Source: Science Network Tang 1 Dust)