Why doesn't the collection of our memories increase our brainsize?

It may be that anything once stored in memory is never lost, but it is quite possible that many trivial experiences are never stored in long term memory.

I really doubt that we never lose data once stored, but am willing to consider it to be so if the experts in the field have some evidence suggesting that we do not lose data.
 
I don't have time to respond right now.
But I'd like to throw in this one little thing real quick.

When I was 11 years old, I joined the Boy Scouts of America.
I had spent time as a cub scout previous to this, but had little idea what to expect from the boy scouts which was a much more mature organization.
I clearly recall my first meeting. Well. Portions of it.
All the new recruits had to to study the motto, the oath, the creed, etc...
I can't really remember all of them. But, one of them, I drilled into my head so squarely that it exists there to this day. And I can rattle it off without even stopping to think about it.

A scout is trustworthy, loyal, helpful, friendly, courteous, kind, obedient, cheerful, thrifty, brave, clean, and reverent.

There have been periods that lasted for years where I never thought of this, then the subject of memory comes up and this memory comes to the surface and I rattle it off. Machine gun style.

I believe that I remember it so well because I placed a great deal of emphasis on its learning at the time. The other things I had to memorize that night were all far easier to remember and required no great effort. But this long list was difficult to remember and I drilled it in. And in it remains.


I also have a clear memory of the first day of first grade. I was late. Everyone turned to look at me as I entered the classroom.
Again. The reason for the memory? Embarrasment.

TheoryOfRelativity has pasted a link to the hippocampus already. The hippocampus is central to the focusing of attention in the brain. There is a delicate feedback mechanism which reinforces certain memories while overlooking others.

I tend to believe that the brain does not store all memories. And those memories it does store are not usually accurate.

I can understand where Mr. Anonymous is coming from, however. I suppose if I had a photographic memory I, too, might assume that such is the normal function of memory if only it were trained to be that way.

Anyway. As I said. More on that later.
 
MrAnonymous: unless you didn't have an eidetic memory at some point, and developed it through practice, I don't see how you can assume that all humans are capable of that feat...

That said, something I've always wanted to ask someone with a photographic memory - can you flip through a book in the bookstore and then read the whole thing mentally later? :D

I have a somewhat visual memory myself, but it's far too low resolution to be photographic. I just remember useless things like roughly where on the page a particular paragraph was, and usually only in the short term.
 
Well, it's been a while so I checked back. Some interesting posts on memories but none really getting to the core of what I'm talking about. It is kinda strange however as your experiences, which I have just read, are now in my short term memory with what I believe the surroundings would have looked like. I appreciate the responses but maybe I posted this in the wrong forum? What I was looking for was some interesting arguments as to why our brains stay the same size and weight for all the learning that goes into them?
Thank you,
Howard
 
Sounds interesting. Please explain further. How can something be added without it having mass?
Howard
 
Why doesn't the collection of our memories increase our brainsize?
For the same reason the Sciforum's archive hasn't yet solved the world's endemic problems.
 
Changing connections in a device might made radical changes in function without changing the mass.

I believe it is rewiring that occurs as we add memories.

BTW: The organizaiton of our brain is not at all similar to the organization of a computer. Our brain does not have the clean separation between functional parts (programs) and data areas.
 
The number of neurons contained within the brain varies dramatically across species. For example the human brain has about 100 billion (1011) neurons and 100 trillion (1014) connections (synapses) between them.
wikipedia

Changing 'connections' changes networks pathways which specify information such as memory.
 
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