Talk:Stochastic resonance
Latest comment: 12 years ago by Benjamin Ostrow in topic Non-essential?
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Non-essential?
editArticle would much benefit if it contained encyclopedic definition of the subject.--82.148.3.124 (talk) 20:49, 25 June 2010 (UTC)
This article begins with this:
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- Stochastic resonance (SR) is observed when noise added to a system changes the system's behaviour in some fashion.
This seems like a definition by non-essentials, because it doesn't say anything about something that is stochastic. Is stochasticity taken to be a part of the definition of "noise"? If so, it needs to say that explicitly rather than leave us guessing. Michael Hardy (talk) 07:29, 3 February 2010 (UTC)
- I don't want to work much on the article, but I agree with above comment. Really, the entire article seems to be written from the signal processing perspective, which is unfortunate, the subject is much larger than just signal processing.
- A more physics friendly statement could be:
- Stochastic resonance (SR) is a behavior of non-linear systems in which random (stochastic) fluctuations in the micro state cause deterministic changes in the macro state. This occurs when the non-linear nature of the system amplifies certain (resonant) portions of the fluctuations, while not amplifying other portions of the noise.
A more useful definition would describe SR as a central concept in neuroscience. The brain selectively amplifies useful patterns of activity in an evolutionary way. They are amplified in a stochastic or more simply chaotic fashion, selected by memory and the environment.