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1500 questions
7
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Phase locking value (PLV) between $x(t)$ and $x(t-T)$
I have been trying to calculate PLV using the hilbert transform (reference). To test if it even works or not, I calculated PLV between $x(t)$ and $x(t-T)$. i find that it drops to zero very quickly as $T$ becomes nonzero as shown in following…
morpheus
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Is there any evidence to support a correlation between how much bodily energy you are using, and how quickly time appears to pass?
It seems to me that time passes more slowly when I am drinking coffee, but when I stop, or I am tired it seems that time passes a lot faster.
Could this have something to do with the sampling rate at which the life-loop in my brain can perceive…
leeand00
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What is the state of the art in computerised coding of Thematic Apperception Tests (TATs)?
Thematic Apperception Tests (TATs) involve showing test takers pictures and getting them to write stories based on the pictures. Coding such stories for themes and traits can be complex, time-consuming, and potentially suffer from issues of…
Jeromy Anglim
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7
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What's the relation between BCM and Oja's learning rule?
A software I'm using has implemented two unsupervised learning algorithms, Oja's and Bienenstock, Cooper, Munro's (BCM) learning rule. I understand that they are two very different algorithms for adjusting a neuron's connection weight, but I was…
Seanny123
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7
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2 answers
How to interpret a BBC news article on the effect of race on intelligence?
In spring 1998, Robert Plomin claimed to have discovered a gene linked with intelligence. More recently, the Human Genome Project was cautious when approaching areas implying racial differences since research actually shows greater genetic…
user6479
7
votes
1 answer
What's the functional difference between the NEF and normal ANNs?
Aside from obvious biological plausibility, from a computational standpoint, what's the motivation of using the Neural Engineering Framework (NEF) instead of Artificial Neural Networks (ANNs) for computing functions? From what I can tell, they both…
Seanny123
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7
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3 answers
Is there a name for a scientist's resistance to disconfirmation of his or her theories?
Confirmation bias is the tendency to search for or interpret information in a way that confirms one's beliefs or hypotheses. And some results illustrate that people set higher standards of evidence for hypotheses that go against their current…
user6480
7
votes
1 answer
How does the alpha brain wave frequency range distribute over the population?
Alpha brain waves show up in your EEG when you close your eyes. Alpha waves are brain waves between 8 and 13 Hz.
How does this frequency range distribute over a population of people?
draks ...
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7
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What is the difference between social anxiety disorder and shyness?
It seems that there are similar symptoms shown by people who suffer social anxiety and shyness, but what is actually the main difference between them? Thank you.
Teguh Kurniawan
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What's the neurological basis for "practice makes perfect"?
I was reading Marvin Minsky's The Society of Mind:
This (practice makes perfect) is really is quite curious. You might expect, instead, that the more you learned, the slower you would get-from having more knowledge from which to choose! How does…
Eric
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7
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Why "fractional" anisotropy?
Why is Fractional Anisotropy (FA), a measure in diffusion tensor imaging, called "fractional"? I'd have thought "local", i.e. voxel-wise, would have been the correct way to qualify the anisotropy that is calculated from the tensor model, so why…
z8080
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2 answers
Are there NP-Hard or NP-Complete problems that humans a really good at solving?
It has been noted that humans are good at solving the travelling salesmen problem under certain constraints. Are there other NP-hard or NP-complete problems that human beings are good at solving? Has there been other research (psychological,…
Seanny123
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7
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1 answer
What causes people to rapidly lose skill after becoming moderately good at something?
I've noticed that people often manage to become moderately good at something, but seem to reach some sort of peak at that level and then rapidly start getting worse again.
I've seen this happen with videogames (most notably Starcraft 2), pool…
Valyrion
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7
votes
1 answer
Does "The Brain Machine" work?
I came across this article on Make Magazine on "The Brain Machine" which will supposedly put one into a trancelike meditative state via a combination of sound and light pulses.
Is there any scientific evidence supporting the effectiveness of such a…
Steve French
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7
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1 answer
Manipulating cognitive load in online experiments
I'm under the impression that standard cognitive load manipulations (e.g., remember a 7-digit number while completing some other task) wouldn't work for online subject pools like Mechanical Turk. Are there other cognitive load manipulations that…
amanda
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