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neuron firing rate humans include journal article reference
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Recent Questions About: average neuron firing rate humans include journal article reference
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Answers
My research - 20-30/sec. at rest, 300-500/sec. active, max about 1000/sec.
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I'm not finding any journal
articles (sorry, I don't have a university account.)
http://www.noteaccess.com/APPROACHES/ArtEd/Ch These are notes based on "Coon, Dennis. Introduction to Psychology, Exploration and Application. St. Paul: West Publishing Company, 1989" *** From that reference *** 2. THE NERVE IMPULSE (primarily an electrical event): Each neuron is like a tiny biological battery ready to be discharged. It takes about one-thousandth of a second for a neuron to fire an impulse and return to its resting level. Thus, a maximum of 1,000 nerve impulses per second is possible. However, firing rates of 1 per second to 300-400 per second are more typical. *********************** http://www.sciforums.com/Singularity-Institut I wouldn't consider it as good as the first source, but it keeps things in the same order of magnitude... *** From that reference *** Cris 03-09-02, 02:41 AM Adam, Try this - Humans are smarter than chimpanzees, presently the smartest creatures on Earth. Does humanity represent the theoretical limit? Certainly, the human brain's hardware is far slower than the theoretical limit. Human neurons fire approximately 200 times per second, using signals that travel at a maximum of 100 meters per second. By comparison, my computer's CPU operates at 667 million clock cycles per second, and the speed of light is 300 million meters per second; the reason a human brain has around a hundred million times as much raw computing power as my computer is that a human brain has 40 billion neurons and 100 trillion synapses. If your neurons could be upgraded to fire 200 million times per second and send signals at 100 million meters per second, the result would be a millionfold "subjective speedup"; you could think a million times faster. In the time it now takes for your watch to count off 31 seconds, you could do a year's worth of thinking; more than a millennium of subjective time would pass between sunrise and sunset. You might not be any "smarter" - you would simply think much, much faster - but the effect, to an external observer, would be beyond description. A community of ultraspeed humans could - mentally, at least - recreate the entire path from Socrates to World Wide Web in less than a day. A day after that, if the ultraspeed humans have physical technology that runs at the same speed as their minds, the ultraspeed community would have the same technology and culture we would reach in 4700 AD... and just 1900 AD to 2000 AD was enough to take us from steam engines to the Internet. And that to my mind sounds like a change beyond imagination. Cris *************************** And this from the Dallas Morning News... http://ramonycajal.mit.edu/kreiman/news/media *** Begin Article *** A face that rings a bell ... and fires a neuron Why do specific nerve cells respond to certain objects or images? 04/09/2001 By Tom Siegfried / The Dallas Morning News NEW YORK – At first glance, the human brain seems to be ruled by mob mentality. Billions of nerve cells shout to one another by firing electrical impulses, controlling how the brain's owner behaves. But within that mob of nerve cells, or neurons, are specialists that do their own thing. Some cells ignore all but one specific sort of stimulus, then fire at will when encountering their specialty. Many neurons respond best to faces, others to animals, some to houses. Some single neurons tune in to specific facial expressions; others fire for familiar faces but not for strangers...... ....But lately more researchers have given willing patients simple tests to study such mental processes as face recognition, memory and use of language. Scientists discussed some of their findings last month in New York City at the annual meeting of the Cognitive Neuroscience Society. Such research makes use of ultratiny "microelectrodes" to probe brain tissue and record the electrical signals that neurons fire. By analyzing the recordings, scientists can determine what kind of stimuli will trigger a neuron to fire more often than it does in its unstimulated, or "resting," state. Resting firing rates are generally a few times per second; a stimulated neuron might fire 20 or 30 times a second....... ***************************** | |
| Sources: My research - see cites below |
Is "average" the right word?
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The firing rate of a neuron
is a fundamental characteristic of the message it "sends" to other neurons. It
is variable and indicates the intensity of its activation state. As such, it
can range from near zero to some maximum depending on its need to convey a
particular level of activation. What is the maximum? Several articles I've
seen suggest that 100Hz is chosen, by convention, to be the typical maximum
firing rate. Others suggest some types of neuron can fire at up to 1000Hz. One very interesting article discusses the resonant frequency
of neuronal networks due to synchronization in the firing patterns.
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| Sources: http://www.google.com/search?q=maximum-firing |
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