View Question
Q: Human brain capacity in MB or GB ( Answered,   3 Comments )
 Question
 Subject: Human brain capacity in MB or GB Category: Science > Biology Asked by: twistedpixel-ga List Price: \$2.00 Posted: 26 May 2005 05:49 PDT Expires: 25 Jun 2005 05:49 PDT Question ID: 525801
 ```I was having a curious think to myself the other day and was wondering.... I appreciate that it's hard to work out considering the things you forget etc, but what is the average capacity of a human brain given in megabytes (or more likely) gigabytes?```
 Subject: Re: Human brain capacity in MB or GB Answered By: jackburton-ga on 26 May 2005 06:53 PDT
 ```Hi Twistedpixel, 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." http://www.sizes.com/people/brain.htm 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.)" http://www.geocities.com/rnseitz/The_Great_Gray_Ravelled_Knot.htm The Technology of Storage http://www.moah.org/exhibits/archives/brains/technology.html Search terms: [ capacity brain equivalent ], [ capacity brain terabytes ]```
 `That's funny!`
 ```Holy crap - thats like a supersized ipod in the head. I wonder how many songs that can hold?```
 ```It's always amazed me that the lyrics to "Alexander's Ragtime Band," among other things, are stashed somewhere in my brain available for near-instant recall whenever I want them.```