# All Questions

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### When should a percentage be written as a percentage and when should it be written x out of n?

People perceive numbers, percentages and values in different ways depending on what it is and how it is presented. I'm looking for research on when to communicate with an actual percentage and when ...
33 views

### Is there an experiment where participant tries to move object with brain-machine interface and object is moved by someone else?

Psychological experiment where subjects are first taught to move a object just by thinking about moving it (subject's brains are being read with a machine that moves the object). Then the object is ...
247 views

### What's the explanation of this optical illusion where many coloured arcs radiate from a central point?

I saw the image below on facebook. At first, I thought it's a GIF animation since it doesn't appear static but it turned out to be a static JPEG image and the apparent motion is caused by the brain. ...
61 views

### What is a good rough rule of thumb regarding required sample size for questionnaire studies?

I need to perform a questionnaire as part of my final project. What are the quick-and-dirty rules for knowing how many respondents I need to get meaningful results?
30 views

### What is the modern definition for problem solving?

Apart from Polya's definition of problem solving in 1981, "finding a way out of a difficulty, a way around an obstacle, attaining an aim that was not immediately attainable.", is there a better modern ...
108 views

### How many synapses in the average human brain?

Knowing there are 100,000,000,000 neurons in an average human brain, and 7,000 dendrites in each neuron, and neurons are connected to each other by dendrites and axon terminals, how many synapses are ...
34 views

### Research connecting reflection/introspection in computing and metacognition [closed]

I would like to know if the notion of reflection/introspection in computing has prompted research in other fields other than computer science, e.g cognitive sciences. In particular, I would love to ...
50 views

### How does the unconscious mind work and can we consciously have any control over its contents and functions?

I have read up that the unconscious mind has substantial influence over our decisions, reactions and behaviors. Can we have much influence on how it functions and can we use it to our benefit? Also, ...
62 views

### What evidence is there to suggest that delayed gratification is taught and learned and not genetic?

Every evening I spend considerable time and energy trying to get my kids to eat their dinner, holding off treats such as chips or dessert. My experience was that my parents did the same. I have ...
57 views

### What was the quantified brain volume of Albert Einstein?

I have read articles stating that Albert Einstein had an average brain volume but couldn't find a specific measurement. I'm curious because the articles are all so ambiguous. He could have been on the ...
48 views

### Effects of Social Networking websites on Humans?

What are the effects of social networking websites in the evolution of humans (behavioral, intellectual, etc.)? Have their been any studies (published research, articles) on positive or negative ...
71 views

### Are desires influenced by beliefs?

I refer it especially to what men and women look for in the partner. Of course, this is a generalized speech. There is a correlation between the model of beauty proposed to men and what men sees as ...
44 views

### “All lay loads on a willing horse”

Is there any research on an effect described in the proverb in the title, i.e. when people who work well are requested to work even more, while weak workers are usually left without attention?
137 views

### 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 ...
122 views

### Why do dreams lose clarity quickly over time after we awaken?

Right after you wake up from a dream, you seem to be able to remember most if not all of the details. Then, over time, these details fade and often disappear. Is this a form of regression? Why is ...
148 views

### Study Effectively [closed]

I have 1day for the exam and there is much to study and Is there anyway to study Effectively.. This is not just for tommorrow this is for the entire life.. I'm feeling little low. Is there any ...
119 views

### Can a self-paced-reading & grammaticality judgment task be programmed in PsychPy or Open Sesame?

I want to know if it is possible to design an experiment on PsychoPy or Open Sesame in which the subject does a self-paced reading (with measuring the reading times for each word), and then after ...
42 views

### Cognitive (neuro)science and related mailing lists

I am looking for cognitive neuroscience (and related) mailing lists. For some time I have been subscribed to Visionlist and found it to be a tremendous source of information about conferences, PhD and ...
48 views

### 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 ...
29 views

### Are there any programmes to identify modular “NeuroBricks”?

In synthetic biology, an organization called the BioBricks Foundation tries to identify modular biological components that are amenable to engineering design, and publishes them in the Registry of ...
328 views

### Is “Schizophrenic” considered to be a derogatory or offensive term?

In US English, "Schizoid" is considered a derogatory term, while "patient/person with Schizoid Personality Disorder" is the "politically correct" term (and more accurate). For this reason I wanted to ...
109 views

### How common are visual hallucinations in Schizophrenics?

The typical "Hollywood" representation of Schizophrenia involves vivid visual hallucinations. However, in practice, the dozen or so people with a diagnosis of Schizophrenia I have worked with have ...
25 views

### Where do spatial dimensions enter in single compartment neuronal models?

I am trying to understand how the length and diameter of a compartment are specified. For example, in the Hodgkin–Huxley model, we only have conductances specified in $\rm mS/cm^2$. How do you specify ...
29 views

### Is there a pictograms repository under an open-commercial license?

I'm looking for pictograms repositories for non-verbal people. I found two types: ones that I need to pay like PECS or SPC, and others that are free but they have a no-commercial license like ...
64 views

### Can a person control their brain's electrical activity?

In a brain-computer interface paper, I found the following paragraph: Effective assessment of BCI performance requires two levels of evaluation: the user and the system. The user must control the ...
38 views

### How do ligands bind to and release from receptors?

I'm wondering exactly how ligands bind to and release from receptors. Until recently I presumed ligands were attracted to receptors through electrostatic forces with no chemical interaction involved, ...
60 views

### What is a good general reference on cognitive science in military training?

I know that one of the application of cognitive science is military science. Unfortunately I haven't found a good source on how cognitive science could benefit military training. Is there any ...
113 views

### What to do when you have a speed-accuracy trade-off in your data?

Many studies report that a speed-accuracy trade-off (SATO) did not occur in the data since there is a positive correlation between RTs and error rates. In other words, people took longer to respond ...
62 views

### Does referring to each other by number in group meetings lead to better results?

I've learned that the pilots of the Red Arrows never refer to each other by name but by number in the briefing room in order to avoid conflict. Is there a name for this trick? Do any studies say this ...
153 views

### Diffrence between SSVEP and P300

I have read about SSVEP and P300 as different subjects. But its seems that they are related to each other. Is P300 a kind of SSVEP?
49 views

### What is the meaning of semantics to cognition?

I am new to the field of semantic knowledge representation and all I get information about the term semantics = meaning. Can somebody please explain to me what is semantics and how it is important in ...
112 views

### What is the name of the condition where you feel like you have been somewhere before?

It happens many times when you visit a place you have never been before, you feel subconsciously you have been there already. And the events and people you are ...
82 views

### What is the difference between cognition and artificial intelligence in the context of robotics?

A lot of research work is being conducted on artificial intelligence and robotics. Terms like cognitive robotics are used. What is the difference between cognitive robotics and artificial intelligence ...
91 views

### Is there a way to make oneself more sleepy?

Background motivation: Is there is a way to correct sleeping patterns to go to bed at least at midnight, not later than that? If I do not feel tired/sleepy enough, can I "prime" or "cheat" myself to ...
34 views

### What are the neurobiological factors associated with intelligence in animals?

For example, is there a well-defined relationship between "number of neurons in the cortex" and some measure of "intelligence" in animals? I'm familiar with the encephalization quotient - that is, ...
147 views

### Is attraction between two people just physical, not neurological/psychological?

In the Richard Morgan's sci-fi debut Altered Carbon, the technology exists to separate a person's consciousness and put it into another body or "sleeve". The protagonist Takeshi Kovacs, is downloaded ...
57 views

### How does the frequency of a visual stimulus affect the steady-state visually evoked potential?

I want to make a project for EEG signal processing, and in my research I found the concept of SSVEP, which means that if you have a stimulus with low frequency applied to the eye, the electrical ...
88 views

### Is it usually worthwhile to argue to try to convince someone?

I find from personal life experience that arguing with someone is hardly a good way to try to convince someone of something. You might end up getting whatever you'd like from the person you are trying ...
41 views

### Why does autism sometimes impede the ability to produce speech?

My seventeen year old brother is severely autistic and unable to communicate. He can produce sounds, and imitate words, but he doesn't respond to words in a way that suggests he understands them. His ...
37 views

### What does Inter-Personal conflict means in clinical evaluation?

Bob suffers from depression and thinks he has dementia. He goes to see a Psychologist who conducts Rorschach test and gives the following evaluation: ...
3k views

### What is the difference between biological and artificial neural networks?

I read that neural networks are of two types: a) Biological neural networks b) Artificial neural networks (or ANN) I read, "Neural Networks are models of biological neural structures," and the ...
173 views

### 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 ...
147 views

### How do laypeople form a judgement that another person is smart or intelligent?

I am curious: When do we label a person as being 'intelligent', 'smart' or 'clever'? This is subjective, and it seems unlikely that it is possible to reach a bulletproof definition. A high IQ has been ...
134 views

### What is a semantic cognitive map?

Based on: J. P. Carvalho, "On the Semantics and the Use of Fuzzy Cognitive Maps in Social Sciences" (WCCI, 2010 -- PDF) and Richard Dagan's web page Cognitive Mapping. A cognitive map consists of ...
133 views

### 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 ...
43 views

### What is the source for the W3C's Contrast Ratio formula?

The Word Wide Web Consortium (W3C) has a formula for the contrast ratio of any two arbitrary colors, which they use to set minimum standards for text legibility: ...
45 views

### What method(s) are available which demonstrably increase a person's g factor, (assuming such are available)?

Following up on this question: What method(s) are available which demonstrably increase a person's* g factor, (assuming such are available)? (*if a specific target individual is necessary to respond ...
172 views

### What is the minimum angle off horizontal before a line visually appears inclined at first glance?

Here is a straight line, which visually looks like a straight line: At first look (lets say minimum 2–3 sec.) the line below looks straight, but after some time you can see that it is actually an ...