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Regimes and mechanisms of transient amplification in abstract and biological networks

Date Issued
2021-01-01
Author(s)
Christodoulou, Georgia
Vogels, Tim P.
Agnes, Everton J.  
DOI
10.1101/2021.04.01.437964
Abstract
We use upper triangular matrices as abstract representations of neuronal networks and directly manipulate their eigenspectra and non-normality to explore different regimes of transient amplification. Counter-intuitively, manipulating the imaginary distribution can lead to highly amplifying regimes. This is noteworthy, because biological networks are constrained by Dale's law and the non-existence of neuronal self-loops, limiting the range of manipulations in the real dimension. Within these constraints we can further manipulate transient amplification by controlling global inhibition.
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