I hope that you mean "the efficiency of human brain".
Efficiency of human brain is measured by Intelligence Quotient (IQ). The maximum IQ possible for a human being is 162. It seems that this is the saturation point to the human brain.
Dear respected colleague Dr.Selvam Ramasamy , Thank you so much for your outstanding comment and sharing this link, really I hope to resize human brain abilities including efficiency.
I believe that whatever has a beginning surely has an end. There are saturation level. At a retirement point, It becomes a leisure. Studies obeys the exponential/hyperbola curve. It starts from a point, grows exponentially, meets a saturation stage and start a decline. This is also seen in both daily studies.
I disagree with your dear Dr.Arwa Abdulrasoul Salman, every think will decline with time, including, age, activities, ...etc. Anyway, thank you so much for sharing your point of view.
The human memory can store 2.5 petabytes of information. This eans that it can store 3 millions hours of TV programs. After that anything stored in the human brain will overwrite stored information. The question is which one and how?
I want to add that since the Human brain can store more than 3 million hours of TV programs than a healthy human being brain needs 300 years to store these information. In other words there is no saturation problem for a normal healthy human brain.
there is no saturation level for the human brain, A person will not be convinced that there is saturation in the brain or that there are limits to his level of intelligence and abilities.
The history of computer science as a whole boils down to the fact that scientists try to understand how the human brain works,
The cortex of the human brain consists of about a hundred billion neurons.
Historically, scientists studying the work of the brain have tried to embrace all of this colossal construction with their theory. The structure of the brain is described hierarchically: the cortex consists of fractions, a fraction - from the "hypercolumns", those - from the "mini-columns" ... The minicolumn consists of approximately one hundred individual neurons.
Perhaps such "analog neurons" will become an elemental base of future devices that will be able to cope with a number of tasks - for example, with the recognition of images - not worse than the human brain; just like digital circuits have long surpassed the human brain in its ability to count.
I believe there is a short-term saturation level, as the human brain can only engage in so much reading or studying before it fails to process any more information. However, after an appropriate break, the brain can receive more information without loss of the previous information. So I don't think there's a long-term saturation level.
The brain is one of the most complex organs in our body system, with a capacity of learning and storing huge amounts of information until very old age. It has what is called elasticity property in which we can use it as much as we want and it has space to accommodate what we need to hold. There is no such a thing as saturation but there is a thing called shortage of knowledge or information in our brain that was supposed to be stored. Of course there will always be difficulties on getting access to information and maintaining it, which does not mean saturation. In a huge space, you can put something thing and if not fixed properly to hold on, it will fail and disappear, but that does not mean that the space was saturated.
Thomas Edson the inventor of the light bulb says that genius is 1% inspiration, 99% personal diligence. So many scientists have made it clear that a person uses his entire brain, but not at the same time. The brain consists of 100 billion nerve cells that transmit information through different speeds. The left side of the brain controls the right side of the brain. Of the body, the right side of the brain on the left side of the body, and the human brain consists of 75 percent of the water, so you should drink about 8 to 10 cups of water to work your brain in full activity.
Some scientists say that humans use only 10% of their brain power. What about the remaining 90% is useless? Are there areas in your brain that do not work? But why when the brain is damaged the person loses certain abilities, if the theory of using 10% of the abilities of the mind is only a myth.
Since the brain is a non-industrial organ that has a great absorption capacity may not reach saturation, but the more the amount of information entering the large increases the ability to absorb and receive information
What ever you read, search, navigate etc.. or 24 hrs even by sitting in front of a computer you may get a bit command over that particular subject. Knowledge is vast and keep on expanding, a latest development come tomorrow in that particular field. Where is saturation!!
I have a little command over specific subject, that does not mean I know all. Once I mentioned in an answer, 'there is no limit for human greed'. I can say now there is no limit for human brain to get saturation.