French scientists have recently studied various types of human brain activity and found that depressed people tend to have excessive brain activity, eventually leading to brain failure, mental and psychological serious problems. Scientists at the French National Center for Scientific Research pointed out in a newly released report that scientists first asked some people to recall on demand and found that depressing memory clips stimulate a lot of work in the brain, and the amount of brain activity they stimulate far exceeds the recall of other subjects. In addition, people with depression had much higher brain activity than the average person when doing charades with the same score. That is, they use far more brain power than normal people when dealing with more complex daily tasks. This is similar to an athlete running a marathon at 100-meter sprint speed, and this excessive activity could explain why people with depression are often exhausted, which is related to their inability to allocate their brain power properly. This research result is the opposite of what many previous studies have concluded. Previously, many studies have suggested that depressed people have thinking problems mainly because some areas of the frontal cortical layer of the brain are at a standstill, with reduced brain activity. In fact, this stagnant state is caused by the brain’s previous excessive activity. This result suggests that the treatment of stressful disorders such as depression depends not only on the immediate symptoms but also on the process of their development and formation. Similarly, a person in a depressed mood is not necessarily uninterested in life; he may have just completed some tricky task and his brain is in a period of fatigue.