Abstract:
:The frequency sensitivity of weak periodic signal detection has been studied via numerical simulations for both a single neuron and a neuronal network. The dependence of the critical amplitude of the signal upon its frequency and a resonance between the intrinsic oscillations of a neuron and the signal could account for the frequency sensitivity. In the presence of both a subthreshold periodic signal and noise, the signal-to-noise ratio (SNR) of the output of either a single neuron or a neuronal network present the typical characteristics of stochastic resonance. In particular, there exists a frequency-sensitive range of 30-100 Hz, and for signals with frequencies within this range the SNRs have large values. This implies that the system under consideration (a single neuron or a neuronal network) is more sensitive to the detection of periodic signals, and the frequency sensitivity may be of a functional significance to signal processing.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
Yu Y,Liu F,Wang Wdoi
10.1007/s004220000203keywords:
subject
Has Abstractpub_date
2001-03-01 00:00:00pages
227-35issue
3eissn
0340-1200issn
1432-0770journal_volume
84pub_type
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