11
votes
Accepted
Is back-prop biologically plausible?
Biological Plausibility of Back-Prop
No, the algorithm of back-prop (BP) isn't biologically plausible. However, there are other means which involve propagating the error through multiple layers of ...
- 8,863
8
votes
Are there neural loops within a column or an area of the cortex?
I've read evidence for single-neuron, two-neuron, and larger loops/cycles throughout the cortex, including intralaminar, interlaminar, and interareal neural loops. But it would take me far too long to ...
- 2,193
8
votes
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What is the capacity of the human brain?
Paul Reber, professor of psychology at Northwestern University, stated that
The human brain consists of about one billion neurons. Each neuron forms about 1,000 connections to other neurons, ...
- 12.3k
8
votes
Accepted
What role do circular network structures play in neural networks?
In contrast to artificial neural networks, which are almost all feed-forward architectures, networks in biological brains are highly recurrent. In the networks of cortex, the majority of synaptic ...
7
votes
Are thoughts transferred along with a brain during a brain transplantation?
Short answer
Human brain transplants have never been performed, so any answers to what will happen are mere speculations.
Background
Whole-head transplants have been performed on animals, the first ...
- 20.8k
6
votes
Delay time of Transmitting the information from one neuron to another in brain
You mentioned the neurotransmitters released at the synaptic cleft, but seem to be interested in the complete picture. An action potential is actually very slow to propagate down an axon with a ...
- 503
6
votes
Accepted
What are the advantages of 2AFC in a psychophysical discrimination task?
What makes a task a two alternative forced choice task?
I am beginning my answer with this question because there is a general misconception about what 2AFC really means. Many people believe that ...
- 261
5
votes
Accepted
Can information be lost while traveling through neurotransmitters?
Synapse Information Processing
In the Neural Engineering Framework (NEF), synapses are:
Leveraged to provide filtering of spikes at different time scales. This allows for managing heterogeneity in ...
- 8,863
5
votes
Brain and General Sections
It depends on the type of addictive substances (i.e., opioid, amphetamine, LSD, etc). Different types bind to different sets of receptors of neurotransmitters (i.e., dopamine, serotonin, GABA, etc.) ...
- 1,845
5
votes
Cerebellum question
I don't have a clear and definitive answer to give to you but first you should have a look about brain development (from:https://www.apa.org/education/k12/brain-function):
And to the function ...
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5
votes
Cerebellum question
Hagfish, the most primitive vertebrates, do not appear to have a cerebellum, or if they do have one it is very primitive. Hagfish have most of the other structures found in vertebrate brains (...
- 235
5
votes
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Does monism imply that computers can have consciousness?
Note: While "The Basic Theory of the Mind" may potentially be well researched and possibly accurate, it is (as far as I know) a self-published discourse by a non-researcher, that is not peer-reviewed. ...
- 19.8k
5
votes
Is there any justification for viewing neurons as self-interested agents?
The answer to "is there any justification" is pretty much always "yes", but that can be a quite uninteresting "yes" if those justifications are poor. People justify bad ...
- 7,780
4
votes
How do the motor system and Central Pattern Generators interact?
Descending inputs onto the central pattern generating circuit provide stimulus in the form of neuromodulatory chemicals and synaptic currents (Marder 2012). The leech heartbeat pacemaker and the ...
- 61
4
votes
Accepted
Biological plausibility of RBMs
First, I want to clarify a few things. Deep Learning simply refers to any learning on a deep (more than one hidden layer) neural network, where the learning happens (i.e. parameters are adjusted) at ...
- 156
4
votes
Are there neural loops within a column or an area of the cortex?
Yes, absolutely there are loops, and they can occur on a very small spatial scale.
Do we have a proof of local loops in the cortex?
Here are a few papers that describe experimental quantification of ...
4
votes
Accepted
Is neurogenesis driven by prediction error?
This question is very difficult to provide a satisfactory answer to because the technical neuroscience definition of prediction error is murky and since your question brings up machine learning then ...
- 503
4
votes
Accepted
The role of high-performance in neuropsychology
The short answer to your question is that, yes, you are correct. "Cognitive high performance" is a much smaller part of classic neuropsychology than the study of brain damage. There are studies of the ...
- 1,113
4
votes
What are some credible conferences and journals in computational neuroscience?
Adding to what was already mentioned, there are several "Frontiers" journals:
Frontiers in Neuroscience
Frontiers in Neural Circuits
Frontiers in Computational Neuroscience
Frontiers in Synaptic ...
- 517
4
votes
Accepted
Learning In Retina
It is not immutable. There are many studies on retinal plasticity, for example using laser coagulation and showing that after selective lesions new connections can be formed even in the adult retina, ...
- 156
4
votes
Accepted
What is the consequences to be a person who works in theory of science?
Quoting from "Cognitive Reflection and Decision Making"
Many researchers have emphasized the distinction between two types of cognitive
processes: those executed quickly with little conscious ...
4
votes
Accepted
How long can neuron adaptation last?
An Adaptive LIF is just one approximation of a biological learning rule. It is not a model for how biology actually works.
The most-studied biological learning rule is long-term potentiation in the ...
- 7,780
4
votes
Accepted
What extent is non linear dynamics and chaos helpful to study brain function?
Since this an active and relatively new area of research, nobody can tell you for certain where it will lead.
Whether it will "dead end" is perhaps the wrong way to think about it too. All lines of ...
- 361
4
votes
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Name of association phenomenon
Representing the relation between objects + their attributes in neurons is called The Binding Problem. The Wikipedia article I've linked to is a bit questionable at the moment, so you may want to read ...
- 8,863
4
votes
Accepted
MEG from simulated neurons
Techniques that measure brain activity at a distance such as EEG and MEG measure spiking activity very poorly and indirectly. Instead, these techniques primarily measure synaptic currents.
Synaptic ...
- 7,780
4
votes
How to define "current" in artificial neural network?
Short answer
In artificial neural networks currents are not involved, other than those flowing in silico in your pc. Instead, those currents are represented by weighted mathematical functions.
...
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4
votes
ML/Neuroscience: TensorFlow vs PyTorch vs Keras for bulding NN models of the nervous system?
If you're looking at computational models of actual neurons and biological neural networks, there are a number of tools out there which are specifically for the purpose. The most commonly used are:
...
- 186
4
votes
Accepted
Is there any Sleep limit for a human body?
Q: Is there any Sleep limit for a human body?
Can we sleep throughout our whole life if we are supplied the necessary things like food,water etc.
A: Yes, there is a sleep limit for human (and other ...
- 1,845
3
votes
Is back-prop biologically plausible?
I don't know much about this, but here goes anyway.
I heard that the reason backprop isnt biologically plausible is that it requires global control/coordination for the propagation of the gradients. (...
- 191
3
votes
Classification of EEG Signals
BCI has rougly two different approaches to extract features. I will address them both.
When EEG is recorded, you can see an pattern of activity in a particular channel over time. This is the time-...
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