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J Neurophysiol (March 23, 2005). doi:10.1152/jn.00232.2005
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00232.2005v1
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Submitted on March 3, 2005
Accepted on March 16, 2005

Fully Tuneable Stochastic Resonance in Cutaneous Receptors

James B. Fallon1* and David L. Morgan2

1 Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, Victoria, Australia; Department of Physiology, Monash University, Melbourne, Victoria, Australia
2 Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, Victoria, Australia

* To whom correspondence should be addressed. E-mail: James.Fallon{at}ieee.org.

Stochastic resonance describes a phenomenon whereby the addition of 'noise' to the input of a non-linear system can improve sensitivity. 'Fully tuneable stochastic resonance' is a particular form of the phenomenon that requires the matching of two timescales; one being that of the sub-threshold periodic stimulus of the system and the other being the noise induced response of the system. First proposed in 1981, stochastic resonance has been reported in a wide range of biological systems, however, conclusive experimental evidence for 'fully tuneable stochastic resonance' in biological systems is limited. Evidence of 'fully tuneable stochastic resonance' in the response of slowly adapting type I mechanoreceptors in the toad is presented. The results are extended to include the first evidence supporting 'fully tuneable stochastic resonance' in psychophysical experiments, namely tactile detection thresholds, indicating that the human central nervous system is capable of accessing the improved information available via 'fully tuneable stochastic resonance'.




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J Neurophysiol, October 1, 2009; 102(4): 2342 - 2357.
[Abstract] [Full Text] [PDF]


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