Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise.
We theoretically investigate the signal-to-noise ratio (SNR) of a parallel array of leaky integrate-and-fire (LIF) neurons that receives a weak periodic signal and uses spatially nearest neighbor correlated noise. By using linear response theory, we derive the analytic expression of the SNR. The res...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2018-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC6051645?pdf=render |
| _version_ | 1811320435660292096 |
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| author | Tianquan Feng Qingrong Chen Ming Yi Zhongdang Xiao |
| author_facet | Tianquan Feng Qingrong Chen Ming Yi Zhongdang Xiao |
| author_sort | Tianquan Feng |
| collection | DOAJ |
| description | We theoretically investigate the signal-to-noise ratio (SNR) of a parallel array of leaky integrate-and-fire (LIF) neurons that receives a weak periodic signal and uses spatially nearest neighbor correlated noise. By using linear response theory, we derive the analytic expression of the SNR. The results show that the amplitude of internal noise can be increased up to an optimal value, which corresponds to a maximum SNR. Given the existence of spatially nearest neighbor correlated noise in the neural ensemble, the SNR gain of the collective ensemble response can exceed unity, especially for a negative correlation. This nonlinear collective phenomenon of SNR gain amplification may be related to the array stochastic resonance. In addition, we show that the SNR can be improved by varying the number of neurons, frequency, and amplitude of the weak periodic signal. We expect that this investigation will be useful for both controlling the collective response of neurons and enhancing weak signal transmission. |
| first_indexed | 2024-04-13T12:59:26Z |
| format | Article |
| id | doaj.art-3f627ed6878e44d69ec5ab1e92cab620 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T12:59:26Z |
| publishDate | 2018-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-3f627ed6878e44d69ec5ab1e92cab6202022-12-22T02:45:57ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-01137e020089010.1371/journal.pone.0200890Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise.Tianquan FengQingrong ChenMing YiZhongdang XiaoWe theoretically investigate the signal-to-noise ratio (SNR) of a parallel array of leaky integrate-and-fire (LIF) neurons that receives a weak periodic signal and uses spatially nearest neighbor correlated noise. By using linear response theory, we derive the analytic expression of the SNR. The results show that the amplitude of internal noise can be increased up to an optimal value, which corresponds to a maximum SNR. Given the existence of spatially nearest neighbor correlated noise in the neural ensemble, the SNR gain of the collective ensemble response can exceed unity, especially for a negative correlation. This nonlinear collective phenomenon of SNR gain amplification may be related to the array stochastic resonance. In addition, we show that the SNR can be improved by varying the number of neurons, frequency, and amplitude of the weak periodic signal. We expect that this investigation will be useful for both controlling the collective response of neurons and enhancing weak signal transmission.http://europepmc.org/articles/PMC6051645?pdf=render |
| spellingShingle | Tianquan Feng Qingrong Chen Ming Yi Zhongdang Xiao Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. PLoS ONE |
| title | Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. |
| title_full | Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. |
| title_fullStr | Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. |
| title_full_unstemmed | Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. |
| title_short | Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. |
| title_sort | improvement of signal to noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise |
| url | http://europepmc.org/articles/PMC6051645?pdf=render |
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