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این اے ناصر
03-21-2011, 10:19 PM
کیا کوئی بتا سکتاہے کہ ہمارے دماغ میں ڈیٹا کہاں سٹورہوتاہے اور کتنے MB or GBسٹورہوسکتاہے؟

نورمحمد
03-22-2011, 02:41 PM
:scratchchin: :scratchchin: :scratchchin:

یہ تو کسی ڈاکٹر سے پوچھنا ہوگا

این اے ناصر
03-25-2011, 10:06 PM
Current estimates of brain capacity range from 1 to 1000 terabytes!

"Robert Birge (Syracuse University) who studies the storage of data in
proteins, estimated in 1996 that the memory capacity of the brain was
between one and ten terabytes, with a most likely value of 3
terabytes. Such estimates are generally based on counting neurons and
assuming each neuron holds 1 bit. Bear in mind that the brain has
better algorithms for compressing certain types of information than
computers do."


I like this explanation:

"The human brain contains about 50 billion to 200 billion neurons
(nobody knows how many for sure), each of which interfaces with 1,000
to 100,000 other neurons through 100 trillion (10 14) to 10
quadrillion (10 16) synaptic junctions. Each synapse possesses a
variable firing threshold which is reduced as the neuron is repeatedly
activated. If we assume that the firing threshold at each synapse can
assume 256 distinguishable levels, and if we suppose that there are
20,000 shared synapses per neuron (10,000 per neuron), then the total
information storage capacity of the synapses in the cortex would be of
the order of 500 to 1,000 terabytes. (Of course, if the brain's
storage of information takes place at a molecular level, then I would
be afraid to hazard a guess regarding how many bytes can be stored in
the brain. One estimate has placed it at about 3.6 X 10 19 bytes.)"


When you go out on a date with your girlfriend you can remember every single detail that happened that day before , during and after the date. What you were wearing what she was wearing the place you went to every single detail . you could recall everything that happened as if it was an extremely high definition recording but not just Video and audio, the smell , the weather her perfume what you were thinking how the food tasted how did you feel in your heart , with an extremely wide angle view , you can picture the whole place even if you weren't looking that instance at what happened , you can even see yourself and your date in infinite different angles. even yourself as a third person.

So if we had an Extreme definition camera recording in every single angle plus a weather computer recording the weather , and another unknown types of recorders running simultaneously recording the thoughts , the smell, feelings ... etc . recording that single little fleeting date . You would need Infinite storage media to store. and if you could squeeze your mind a little bit you can remember and picture everything you have passed by though your entire lives. it's all stored in your mind using this super recording XD device. So I would say its infinite.

The way brain stores data is not bits with ones and zeros. neither analog having infinite possible combinations . it can picture the data using little information about it . which storage media cant do at all.

let me give you some example:

Imagine a house

A door

Open that door and get into the hallway

rooms to your right and left

the walls and their painting

Enter a room

its a bedroom

stand on one hand

get up

open up the window and look out side

Now the idea behind this is when I gave you this little info I bet 80% of what you pictured was your own house. and the bedroom was your bedroom with the same bed the same decoration paint etc. the window and its view is you bedroom's or some other bedroom you have visited before in a hotel or someplace ... You probably never entered that house this way or done a hand stand before yet you pictured it in XD as if it was true using those little few lines of text info. this is how a brain stores data. X-Def video = few text lines = 100 bytes using a normal computer text processor.

Tn other terms a 100 byte in a brain = more than 10 GB of XD video on a computer. a simple word "lake" 4 letters 4 bytes you can visualize or imagine an infinite number of lakes more than 10 MegaPixels resolution. lets say this word gave you a picture of at least 100 different 10MP lakes = 1GB

How about storing a study textbook of 1 MB into your brain which is extremely the simplest thing your brain can do. it would need more than 268435456 GB of imaging storage on a normal computer . how about what you studied and what you can study and learn ...


1) I was speaking about actual networks of neurons, not artificial neural network models. The threshold values of a node in a toy system has very little to do with how the brain works. And, again: memory (like most things in the brain) arises from states and properties and processes of large networks, not individual neurons.

2) Modern neuroscientists generally believe that most of what the brain does involves emergent phenomenon. (Hence, my username.) This is reminiscent of Gestalt Psychology, but only reminiscent. It's looking at a lower level- essentially, the hardware level.

3) Your brain is almost certainly rewiring itself for every little iota of information that seeps in through your skull, (if by "rewiring" we mean "changing in some way, however tiny"). Synaptic weights change on timescales of seconds, and membrane properties change even faster.

4) ...But that doesn't mean anything has to happen in a binary fashion. There are so many factors that affect neural activity and connectivity, there is an enormous amount of possible variability- very few such things are binary, and even if every factor were binary, a huge amount of them together would be effectively continuous. But there's nothing wave-like about its continuousness: it is a big fat system of countless elements continuously affecting each other, one might say.

One thing is for sure, though: Ray Kurzweil chronically underestimated the complexity of neuroscience, and its differences from computer science! Relatedly, I would warn against the analogy of a "storage facility"- it's too computerlike. Some different general regions of the brain do different things, but on a local level everything is smoothly overlapped and interwoven- there are no separate facilities.

Though I wouldn't say that means uploading into a binary machine is fundamentally impossible. That depends on which specific properties of the brain are necessary for consciousness, which is largely philosophical at this point. I, for one, don't believe that there's something magically unique about neurons.

سقراط
03-25-2011, 10:34 PM
Read Here (http://ur.wikipedia.org/wiki/%D8%AF%D9%85%D8%A7%D8%BA)

این اے ناصر
03-25-2011, 11:19 PM
آپ کے دیے لنک پرتوبہت اچھی معلومات ملیں۔ تھینکس۔

بےباک
03-26-2011, 09:36 AM
بہت زبردست شیرنگ کی ہے محترم ناصر شاھین صاحب اور سقراط صاحب آپ دونوں کی ذھانت سے متاثر ہوا ھوں ،
. ہمارے عام صارفین کے لیے جن کی تعلیم صرف اردو میں ہوئی ،
ہمارے یہاں کچھ دوست ایسے ہیں جن کی انگریزی کی استعداد بہت کم ہے . ان کی سہولت کے لیے میں اردو میں سوال کا جواب لکھ دیتا ہوں ،

سوال یہ تھا ،
.کیا کوئی بتا سکتاہے کہ ہمارے دماغ میں ڈیٹا کہاں سٹورہوتاہے اور کتنے MB or GB سٹور ہوسکتاہے؟

... اس کا جواب یہ ہے ،
دماغ میں ڈاٹا کےتحفظ کا نظام قدرتی طور پر موجود ہوتا ہے ، ایک ٹیرا بائیٹ سے لے کر ایک ھزار ٹیرا بائیٹ تک گنجائش ہوتی ہے ،
اسے ڈاٹا سٹوریج کہتے ہیں ، نارمل انسان کے نظام میں تین ٹیرا بائیٹ سے کم نہیں ہوتا ،
The human brain contains about 50 billion to 200 billion neurons
(nobody knows how many for sure), each of which interfaces with 1,000
to 100,000 other neurons through 100 trillion (10 14) to 10
quadrillion (10 16) synaptic junctions
، 50 بلین سے لے کر 200 بلین عصبی رگیں ہوتی ہیں ،جنہیں عربی میں خلایا العصبیہ کہتے ہیں .
جو آپس میں 1000 سے لے کر 100000 اور عصبی خلیوں سے منسلک ہوتی ہیں. جن کے توسط سے دماغ میں موجود سب نظام مربوط رہتا ھے
........ اس سلسلے میں درج ذیل لنک کو تفصیل سے مشاھدہ کیا جا سکتا ھے ، جس کا حوالہ محترم سقراط صاحب نے دیا ہے ،.
دماغ کے بارے مزید تفصیل اردو زبان میں مشاھدہ کریں ، وکی پیڈیا سے لیا گیا ہے (http://ur.wikipedia.org/wiki/%D8%AF%D9%85%D8%A7%D8%BA)
عصبی نظام دراصل عصبی عقدوں یا یوں کہـ لیں کہ عصبی خلیات کی چھوٹی چھوٹی گرھوں پر مشتمل ہوتا ہے۔ دماغ ایک انتہائی پیچیدہ عضو ہے، اس بات کا اندازہ یوں لگایا جاسکتا ہے کہ ایک دماغ میں تقریبا 100 ارب ( ایک کھرب) خلیات پائے جاتے ہیں (یہاں یہ بات واضع رہے کہ یہ صرف ان خلیات کی تعداد ہے جنکو عصبون یا neuron کہا جاتا ہے)۔ اور پھر ان 100 ارب خلیات میں سے بھی ہر ایک ، عصبی تاروں یا ریشوں کے زریعے تقریبا 10000 دیگر خلیات کے ساتھ رابطے بناتا ہے۔