Questions tagged [neuroscience]

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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 ...
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1answer
76 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 ...
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1answer
73 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
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1answer
62 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 ...
1
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1answer
107 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 ...
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2answers
746 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 ...
5
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1answer
107 views

What are some good ICA packages for physiological data, like MEG?

EEGLab doesn't work well due to the data being from a Neuromag MEG. Any thoughts for alternatives?