Questions tagged [neural-network]
For questions about the function and structure of both biological and artificial neural networks (ANNs), and for the applications of ANNs to modeling in cognitive science.
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Is there any type of neuron capable of modeling "nonlinear function" (e.g. trigonometric, instead of "linear" in traditional Neural Networks)?
Modern Deep Learning technologies such as Self Attention and RNN, kind of integrated higher-degree nonlinear functions fundamentally. e.g. $(w_{1_{branch1}}x_1 + w_{2_{branch1}}x_2) \cdot (w_{1_{...
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Can neurons belong to multiple communities?
I've been reading a little about neural networks in the brain, such as this paper.
Most models have a resolution parameter $γ$, and for each value of that parameter a network can be partitioned into ...
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Which sleep stage(s) account(s) for synaptic consolidation the most?
I learnt that long-term consolidation of memories happens vastly while we are asleep, and it is accompanied by synaptic changes. But exactly which stage(s) of our sleep account for the synaptic ...
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Question about How to assign the order of vertices of a pial surface in FreeSurfer
I'm a CIVET user but I recently started to use FreeSurfer.
As far as I know, for a surface from CIVET, its vertices are ordered by upsampling a polygon. So I could access downsampled surface by ...
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How different is the neural activity in different individuals when they are doing the same tasks?
Today, we can measure EEG (or fMRI) in different individuals and use machine learning to predict their thinking. I want to know if the exact neural patterns (fMRI, EGG etc.) are still similar across ...
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How can behaviour be heritable? [duplicate]
As humans, we are rather proud of our ability to develop and learn new behaviours, seeing this as superior to the inheritance of behaviours that increasingly dominates the repertoires of animals with ...
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Are there any standard tools for neuroscience models programming, like for spiking neural networks?
I come from deep learning environment and there is quite a few standard tools and frameworks that you can use in different occasions. I am trying to build a spiking neural network model in Python and ...
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what is a layer in a **biological** neural network?
in this book Computational Cognitive Neuroscience and its corresponding software leabra
The Leabra Algorithm:
Leabra stands for Local, Error-driven and Associative, Biologically Realistic Algorithm, ...
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Update of feedback connections in brain
A recent paper by Lillicrap revisits the connection between deep learning models and brain and its biological plausibility. In their work, they show that it is possible to learn with fixed feedback ...
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What does "all-or-nothing" means in spiking neural network?
I'm reading a paper by Auge et al. (2021). In the introduction they said "Spiking Neural Networks (SNNs) use short 'all-or-nothing' pulses to encode and transmit information".
I'm not sure ...
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How do we know that neurons are the only cells involved in cognitive computation?
I am an undergraduate studying pure mathematics taking a class on computational neuroscience. My default lens for looking at the brain is in terms of universal computation (in the Turing machine sense)...
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Does the brain send signals continuously to muscles during movement?
If I make one swift movement with my arm, like just raising it, is my brain continuously sending signals throughout the whole movement? Or does it just send signals one time? The latter seems to make ...
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What are the values of the absolute intracellular and absolute extracellular potentials in a neuron?
Most texts on neurons give the value of the membrane potential and do not state the absolute values of the intracellular and extracellular potentials in a neuron. I understand that this is because the ...
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Difference in neural activity of a thought vs. a memory
I want to understand the difference in neural activity between a "thought" and a "memory impression". Is it a "thought" while the neural activity is present in working ...
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What is the actual interpretation of the "correlation of a connection between neurons"?
I am student of Mathematics who is currently studying the utility of Algebraic Topology in the field of Neuroscience. In the paper I am reading (Reimann et al 2017) the authors explain that for ...
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