Questions tagged [neuroscience]

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representing firing rates of a neuron using delta functions [computational neuroscience]

I'm reading 'fundamentals of computaional neuroscience' by Thomas P. Trappenberg and was confused while reading about representing firing rates using direc delta functions. instantaneous firing rate ...
91 views

Modeling Homeostatic Regulation with Python: How to Simulate Dynamic Systems

Hello Computational Science community, I am working on modeling a dynamic system that involves homeostatic regulation in Python and I could use some guidance on how to implement it. Here's a brief ...
64 views

Why are weight changes in Oja's rule and BCM so different?

I simulated Oja's rule and BCM for a single postsynaptic neuron with two presynaptic neurons, and for 10000 inputs, where I randomly select one of $(0,1)$ or $(1/2,\sqrt{3}/2)$ as input. My learning ...
• 121
330 views

Can someone explain the equivalence between Oja's rule and PCA in a simple way?

I have to give a presentation on unsupervised learning in 2 days, and I have to explain/show the equivalence between Hebb's learning rule (or Oja's rule to be more specific) and PCA. The thing is that ...
114 views

how to overcome division by zero in the Hodgkin Huxley neuron model

I've implemented the Hodgkin Huxley model, which worked fine in my visualization, I got the spiking etc. Then I've build a network with a few thousand neurons and experienced random NAN (not a number) ...
1 vote
70 views

Locally evaluate nonlinear dynamic system's stability using eigenvalues

I'm working with Computational Neuroscience. I have a large Synaptic Matrix (x axis: presynaptic NeuronID, y axis: postsynaptic NeuronID) in a Modular network. This matrix is close to a random one and ...
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1 vote
125 views

What kinds of maths to learn for understanding dynamical systems in cognitive science? [closed]

A current trend in cognitive science is to view the mind as a dynamical system (e.g., Continuity of Mind by Spivey, in which cognition is understood as a "continuous and often recurrent trajectory ...
754 views

Modern Computer Efficiency vs Modern Nervous Systems

I am currently working on an evolutionary system and most of what I have heard is that a computer like mine at the moment would be able to simulate a bee sized brain (not taking into account the time ...
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