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• W2025492874 abstract "Neuronal membrane potentials fluctuate stochastically due to conductance changes caused by random transitions between the open and close states of ion channels. Although it has previously been shown that channel noise can nontrivially affect neuronal dynamics, it is unknown whether ion-channel noise is strong enough to act as a noise source for hypothesised noise-enhanced information processing in real neuronal systems, i.e. 'stochastic facilitation.' Here, we demonstrate that biophysical models of channel noise can give rise to two kinds of recently discovered stochastic facilitation effects in a Hodgkin-Huxley-like model of auditory brainstem neurons. The first, known as slope-based stochastic resonance (SBSR), enables phasic neurons to emit action potentials that can encode the slope of inputs that vary slowly relative to key time-constants in the model. The second, known as inverse stochastic resonance (ISR), occurs in tonically firing neurons when small levels of noise inhibit tonic firing and replace it with burst-like dynamics. Consistent with previous work, we conclude that channel noise can provide significant variability in firing dynamics, even for large numbers of channels. Moreover, our results show that possible associated computational benefits may occur due to channel noise in neurons of the auditory brainstem. This holds whether the firing dynamics in the model are phasic (SBSR can occur due to channel noise) or tonic (ISR can occur due to channel noise)." @default.
• W2025492874 created "2016-06-24" @default.
• W2025492874 creator A5000677611 @default.
• W2025492874 creator A5013943407 @default.
• W2025492874 date "2013-11-26" @default.
• W2025492874 modified "2023-09-26" @default.
• W2025492874 title "Channel-noise-induced stochastic facilitation in an auditory brainstem neuron model" @default.
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• W2025492874 doi "https://doi.org/10.1103/physreve.88.052722" @default.
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• W2025492874 hasPublicationYear "2013" @default.
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