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Topic: representational capacity

Seminar
2 seminars

In Computational Neuroscience and Mathematical Modeling

Seminar · Computational Neuroscience

Heterogeneity and non-random connectivity in reservoir computing

Abigail Morrison · Jülich Research Centre & RWTH Aachen University, Germany

Wed, Jun 1, 2022 · 05:00 UTC

Reservoir computing is a promising framework to study cortical computation, as it is based on continuous, online processing and the requirements and operating principles are compatible with cortical circuit dynamics. However, the framework has issues that limit its scope as a generic model for cortical processing. The most obvious of these is that, in traditional models, learning is restricted to the output projections and takes place in a fully supervised manner. If such an output layer is interpreted at face value as downstream computation, this is biologically questionable. If it is interpr

Seminar · Neuroscience

Receptor Costs Determine Retinal Design

Simon Laughlin · University of Cambridge

Mon, Jan 25, 2021 · 14:00 UTC

Our group is interested in discovering design principles that govern the structure and function of neurons and neural circuits. We record from well-defined neurons, mainly in flies’ visual systems, to measure the molecular and cellular factors that determine relevant measures of performance, such as representational capacity, dynamic range and accuracy. We combine this empirical approach with modelling to see how the basic elements of neural systems (ion channels, second messengers systems, membranes, synapses, neurons, circuits and codes) combine to determine performance. We are investigating