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Topic: high-frequency bursts

Seminar
2 seminars

In Applied Mathematics and Biology

Seminar · Computational Neuroscience

Burst-dependent synaptic plasticity can coordinate learning in hierarchical circuits

Richard Naud · University of Ottawa

Tue, Sep 1, 2020 · 16:10 UTC

Synaptic plasticity is believed to be a key physiological mechanism for learning. It is well-established that it depends on pre and postsynaptic activity. However, models that rely solely on pre and postsynaptic activity for synaptic changes have, to date, not been able to account for learning complex tasks that demand hierarchical networks. Here, we show that if synaptic plasticity is regulated by high-frequency bursts of spikes, then neurons higher in the hierarchy can coordinate the plasticity of lower-level connections. Using simulations and mathematical analyses, we demonstrate that, when

Seminar · Computational Neuroscience

Burst-dependent synaptic plasticity can coordinate learning in hierarchical circuits

Blake Richards · McGill University

Fri, Apr 3, 2020 · 13:00 UTC

Synaptic plasticity is believed to be a key physiological mechanism for learning. It is well-established that it depends on pre and postsynaptic activity. However, models that rely solely on pre and postsynaptic activity for synaptic changes have, to date, not been able to account for learning complex tasks that demand hierarchical networks. Here, we show that if synaptic plasticity is regulated by high-frequency bursts of spikes, then neurons higher in the hierarchy can coordinate the plasticity of lower-level connections. Using simulations and mathematical analyses, we demonstrate that, when