Brain Matter?

Question

Why does a Human brain take longer time and more effort in learning but is very fast in reproducing it back??

Answer 1

The learning is a complex process. Whatever the inputs (visual, auditory, olfactory, tactile, emotional etc...) you have it stays in the brain for a short time (called 'short-term' memory) and later it stores (only necessary information) to a 'long-term' memory in the respective brain cortices through a process called memory consolidation. This memory consolidation process takes time and many evidences show it require protein synthesis, changes in the synapses and so on. Overall process takes time. But the retrieval or reproducing back is comparatively less energy and time dependant process even though it is a complex network phenomena. This retrieval also make the memory labile, and vulnerable to further modifications.

Answer 2

I think most of your learning takes place without any effort. Think of the massive amounts of learning you did between the time of your birth and your 3rd birthday. You learned to recognize and respond to family, walk, speak, etc. etc. It was a massive amount of stuff you learned by simply watching those around you.

My guess is that you can remember things quickly because you are young and your brain is uncluttered. Wait til you are in your 40's and have to remember a bajillion things like drop off the kids at 2:00, pick up the dry cleaning, buy your Mother-in law a birthday gift, stop and pay the dentist, make dinner, call your Dad....you get the idea. (Sometimes, I am surprised I can remember my own name LOL!)

Answer 3

In a nutshell:

Learning is a very complicated process, that take several stages: available knowledge, introduction, identification, interest on the subject, and before storing it, analysis , comparison with previous experiences, and at the end,,,storage.
All begins with stimuli, (internal or external), that arrive to a part of the brain called "temporal amygdala" which is am area in the center of the temporal lobe, of the size of a pea...(small gray nucleus)...from there, there are two stages: temporary storage (like computers do in temporary folders), and definite storage (in the cortex of the inner surface of the temporal lobe that also recalls long term stored memory)....Those facts of life, that we are NOT interested on, or are boring etc...are simply erased from our memory, by active ATP (molecular energy) use...(forgetting is an active and energy consuming process..contrary to what its believed or supposed)........
Important things that really impress us, are stored in the temporal outer layer, or cortex....this implies RNA synthesis....(That is why some experimental drugs like pemozide increase our concentration and learning capabilities). caffein is another good example of it.....(trymethyl Xanthyne)
So what i want to say, is that, long and short term memories, are filtered and evaluated first, together wit its "emotional component, (there is always one)....and recalled by the short temporal fibers, when stimulated from the perietal lobe angular gyrus ( for instance mathematical activities) planning, and social behavior ( frontal cortex), and/or abstract thought (rest of the cortex)
Once the definitive memory is stored, the patwhways to recall thoughts is always the same, that is why its easier to recall, than to learn....(its like a recorder, playing back the recorded sounds,...when its a good quality one;;;;;)
I hope this clarifies the subject a little.....
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Answer 4

first my dear friend i think brain doesnt take so time to learn something. u can compare this situation by other animals brain.
neurons (brain cells) cant reproduce, cant repair themselves.
make ur ques more clear

Answer 5

When you learn, you are actually making structural changes to your neural pathways. Recall just involves neural signals propagating along those pathways. It amazes me that it works at all.

Answer 6

this is as simple as it is difficult to cut a fruit but easy to take out its seeds.
a thing which u already know is easy but a thing which u don`t know is always difficult
i think u should see the hindi movie-lage raho munnabhai (if u know hindi)

Answer 7

it depends how stupid you are.