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Seminar✓ Recording AvailableNeuroscience

Network resonance: a framework for dissecting feedback and frequency filtering mechanisms in neuronal systems

Horacio Rotstein

New Jersey Institute of Technology

Schedule
Wednesday, April 13, 2022

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Schedule

Wednesday, April 13, 2022

12:00 AM America/New_York

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Host: van Vreeswijk TNS

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Recording provided by the organiser.

Event Information

Domain

Neuroscience

Original Event

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Host

van Vreeswijk TNS

Duration

70 minutes

Abstract

Resonance is defined as a maximal amplification of the response of a system to periodic inputs in a limited, intermediate input frequency band. Resonance may serve to optimize inter-neuronal communication, and has been observed at multiple levels of neuronal organization including membrane potential fluctuations, single neuron spiking, postsynaptic potentials, and neuronal networks. However, it is unknown how resonance observed at one level of neuronal organization (e.g., network) depends on the properties of the constituting building blocks, and whether, and if yes how, it affects the resonant and oscillatory properties upstream. One difficulty is the absence of a conceptual framework that facilitates the interrogation of resonant neuronal circuits and organizes the mechanistic investigation of network resonance in terms of the circuit components, across levels of organization. We address these issues by discussing a number of representative case studies. The dynamic mechanisms responsible for the generation of resonance involve disparate processes, including negative feedback effects, history-dependence, spiking discretization combined with subthreshold passive dynamics, combinations of these, and resonance inheritance from lower levels of organization. The band-pass filters associated with the observed resonances are generated by primarily nonlinear interactions of low- and high-pass filters. We identify these filters (and interactions) and we argue that these are the constitutive building blocks of a resonance framework. Finally, we discuss alternative frameworks and we show that different types of models (e.g., spiking neural networks and rate models) can show the same type of resonance by qualitative different mechanisms.

Topics

band-pass filtersfeedback mechanismsfrequency filteringnetwork resonanceneuronal systemsnonlinear interactionsoscillatory propertiespassive dynamicsspiking discretization

About the Speaker

Horacio Rotstein

New Jersey Institute of Technology

Contact & Resources

Personal Website

people.njit.edu/faculty/horacio

@horacerot?lang=en

Follow on Twitter/X

twitter.com/horacerot

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