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Resonating neurons stabilize heterogeneous grid-cell networks

Mittal, D and Narayanan, R (2021) Resonating neurons stabilize heterogeneous grid-cell networks. In: eLife, 10 .

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Official URL: https://doi.org/10.7554/eLife.66804


A central theme that governs the functional design of biological networks is their ability to sustain stable function despite widespread parametric variability. Here, we investigated the impact of distinct forms of biological heterogeneities on the stability of a two-dimensional continuous attractor network (CAN) implicated in grid-patterned activity generation. We show that increasing degrees of biological heterogeneities progressively disrupted the emergence of grid-patterned activity and resulted in progressively large perturbations in low-frequency neural activity. We postulated that targeted suppression of low-frequency perturbations could ameliorate heterogeneity-induced disruptions of grid-patterned activity. To test this, we introduced intrinsic resonance, a physiological mechanism to suppress low-frequency activity, either by adding an additional high-pass filter (phenomenological) or by incorporating a slow negative feedback loop (mechanistic) into our model neurons. Strikingly, CAN models with resonating neurons were resilient to the incorporation of heterogeneities and exhibited stable grid-patterned firing. We found CAN networks with mechanistic resonators to be more effective in targeted suppression of low-frequency activity, with the slow kinetics of the negative feedback loop essential in stabilizing these networks. As low-frequency perturbations (1/f noise) are pervasive across biological systems, our analyses suggest a universal role for mechanisms that suppress low-frequency activity in stabilizing heterogeneous biological networks. © 2021, eLife Sciences Publications Ltd. All rights reserved.

Item Type: Journal Article
Publication: eLife
Publisher: eLife Sciences Publications Ltd
Additional Information: The copyright for this article belongs to Authors
Department/Centre: Division of Biological Sciences > Molecular Biophysics Unit
Date Deposited: 20 Nov 2021 11:33
Last Modified: 20 Nov 2021 11:33
URI: http://eprints.iisc.ac.in/id/eprint/69880

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