For questions about the biology of the nervous system, from a macroscopic to microscopic perspective.

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What is the neurological mechanism behind the feelings associated with loneliness?

Loneliness can be debilitating, and the feelings associated with it can be overwhelming, including feeling 'cold inside', sad, hopeless and even helpless. Many things can 'cause' loneliness', both ...
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95 views

Is dominance a hypothetical construct or is it based in neurobiology?

There are several personality tests which have dominance as trait or type as result. In addition to this question: How to measure dominance and submissiveness? How are dominant types constructed in ...
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52 views

To what degree does environment govern the severity of symptoms in schizophrenia?

From what I understand about the physiology of schizophrenia it is thought to be caused by chemical imbalances resulting from genetic factors, fueled by environmental factors. I've garnered that ...
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121 views

What biological processes occur when you love someone romantically? [closed]

How can romantic love be described by scientists?
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69 views

When did neurotransmitters derived from monoamines first appear in evolutionary history? [closed]

When did neurotransmitters derived from monoamines first appear in evolutionary history? What are main the points in evolution for monoamines based on the neurotransmitter system ? Edition I'm ...
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182 views

Plot a schematic outline of the brain [closed]

I know that I can read, write and analyse different type of brain scanning data using various Medical Imaging Tools available for R. But I am looking for something very simple - a possibility to just ...
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341 views

Is human Central Nervous System arousal related to choice of activity? [on hold]

I'm interested in learning more about the central nervous system (CNS) arousal and the choice of what people do and how they feel about it. Lets define CNS arousal in the context of this question as ...
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2answers
281 views

Neural Microfilaments for Computation?

I just watched an interesting TED talk (http://www.youtube.com/watch?v=1d5RetvkkuQ) where a Stuart Hameroff proposes that a neuron's microtubules are responsible for computations, and that they are ...
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153 views

What are the effects of implanting electrodes into the brains of monkeys?

If one implants electrodes into a monkey's brain in order to allow the monkey to control a mechanical arm, then is the monkeys able to move both it's natural and it's mechanical arms at once? What ...
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199 views

How are personality traits “encoded” in the brain?

How are personality traits – such as optimism, sensation seeking or need for cognition – "encoded" in the brain? Do people with different levels of, say, extraversion have different neuronal ...
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2answers
93 views

Are the lobes of the brain anatomically distinct, or is the distinction between them not as well-defined?

If I had a brain in front of me, would I be able to find some kind of crevasse or something separately each lobe from the next? I guess what I'm asking is, are lobes more arbitrarily-defined regions ...
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120 views

Neurosurgically grown neural link between two brains?

I guess it's possible to surgically restore neural connection after a trauma (e.g. a severed hand can be reattached if done quickly). And, from history of evolution of hominids, it seems that just by ...
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101 views

Does a person experience release of dopamine while doing something she/he enjoys?

I am wondering if a person would experience an increase in the level of dopamine while doing something she/he enjoys such as playing guitar or reading a book. And what are some other neurotransmitter ...
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1answer
515 views

How does posture affect cerebral blood flow?

This is a follow-up question to an answer on Quora: In the upright posture, venous outflow is considerably less pulsatile (57%) and occurs predominantly through the vertebral plexus, while in ...
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2answers
53 views

Are there mental reflexes?

Similar to knee-jerk or withdrawal, are there any innate reflexes in cognition? Are they based on personality, or are there any that are universal?
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1answer
74 views

Where in the brain is meaning extracted from visual information?

I am looking into several systems for improving learning speeds and ran into a question I seem unable to answer on my own: When we read a word, it somehow gets converted into it's abstract meaning. ...
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1answer
230 views

Neuroplasticity and Treatment of Depression

After reading 'The Brain That Changes Itself' by Norman Doidge, 'The Mind and The Brain' by Jeffrey Schwartz and a few other books, I've become curious about the science of neuroplasticity, which, as ...
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1answer
158 views

What causes lack of energy? The relative importance of testosterone versus emotional, genetic, and environmental factors

Some people assume that males lack of energy because of low testosterone. I would think that lack of energy could be due to esteem levels, emotional abuse, low self-worth, and even genetics to some ...
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1answer
191 views

Does reading a book out loud make you better in social situations?

Suppose a person reads a book out loud for 1 hour straight. Would this "exercise" the parts of the brain involved in speech? Would this make the person a better communicator in social situations?
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1answer
82 views

How can pain sensations appear to originate within the person's skull?

I've read that humans have some sort of a kinesthetic model of their body and muscles. This internal representation of the body is used to control and coordinate locomotion. I don't remember if ...
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1answer
47 views

What's the difference between executive functions and cognitive control?

I suspect that the difference between these terms may vary from researcher to researcher, since the wikipedia page treats them as synonymous. What's the difference between executive functioning and ...
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1answer
45 views

Can fMRI and EEG signals be generated from NEF models?

The basic function of the NEF is to map the outside world onto neurons, using the firing rates of the neurons. It also supports various neuron models. Have these firing rates been used to create EEG ...
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1answer
50 views

How is averaging used in calculating the Bereitschaftspotential?

I have a question about the averaging involved in the Bereitschaftspotential. On http://en.wikipedia.org/wiki/Bereitschaftspotential you can read that, because it is so small, the ...
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2answers
115 views

Is learning and memory formation mostly comprised of new synapses forming, or already-existent synapses strengthening?

I'm guessing it may be some combination of the two. If so, which is the more frequent situation? I'm also guessing it varies depending on the type of memory being formed. Let's take for instance, my ...
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1answer
265 views

What is the difference between computational neuroscience, theoretical neuroscience, and neuroinformatics (if there is one)?

In particular, theoretical and computational neuroscience seem to be synonymous with each other. Neuroinformatics at least seems to deal somewhat more with solving things numerically and the usage and ...
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1answer
67 views

What are presynaptic puncta?

What are presynaptic puncta? And what makes them different from presynaptic terminals?
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1answer
99 views

Why do some people stutter only when they are nervous?

Background: I don't stutter at least not always. For example, if I be reading out a article to myself, It is sure that I will not stutter even that I am reading it out loud. The times when I do ...
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51 views

What is the metabolic load of the visual system?

The brain consumes energy at eight times the rate that would be predicted from mass alone (20% of total organismic load). How much of this is drawn from the visual system? How does the metabolic load ...
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2answers
40 views

Is pacemaker action potential considered a calcium dependent or sodium/calcium dependent?

Is a sinoatrial node action potential (AP) considered a Ca2+ dependent (No Na+) action potential? I was under the understanding that Ca2+ dependent APs were present only in Purkinje and endocrine ...
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1answer
66 views

Where to find published results of positive psychology cancer treatment study mentioned in Martin Seligman's book?

In Dr. Martin Seligman's book, "Learned Optimism: How to Change Your Mind and Your Life", there was mention of a study involving teaching cancer patients to fight learned helplessness. I believe this ...
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129 views

Why neural architecture is not hardwired for N-dimensional vision but hardwired for abstract math?

In The Theoretical Minimum, in lecture 1, Leonard Susskind says that you can only visualize 3 dimentional images. (see yourself). Therefore, he says, in order to deal with N dimensions, you need to ...
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1answer
39 views

How does Parkinson's disease result in tremors?

From what I understand, Parkinson's disease is caused by the death of dopamine producing cells in the substantia nigra, however I don't understand how that causses the symptoms of Parkinson's. I am ...
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1answer
55 views

What is the difference between a biological and behaviorist perspective in psychology?

I was recently reading through a textbook and was unable to clearly identify the differences between the two due to a vague definition of both. Can someone provide an in-depth explanation of the two ...
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1answer
92 views

Is meaning-seeking behavior a biological optimization problem?

In short, I'm interested in cognitive, neuroscientific, biological and/or computational perspectives on what we vaguely refer to as meaning seeking. Of course, this is a large topic, but any ...
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203 views

The psychology of nymphomania

So this is a question that requires maturity and discretion. I present it as an authentic point of research for a class I am taking. I understand the basic principles of mania, psychomania, and ...
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3answers
87 views

Can repetitive sports-related head injuries make a person senile many years later?

Would repetitive football injuries to the cranium show up decades later, causing symptoms resembling mild retardation, OCD, etc.? What is the best way to determine this in terms of imaging, testing, ...
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2answers
28 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 ...
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1answer
168 views

Why do the hemispheres of the brain control the opposite sides of the body?

History of question: This previous question asked about both hemispheric specialisation and control of opposite sides of the body. The point was made that these are two very different questions. So ...
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1answer
150 views

What causes a muscle to be unsteady?

I have noticed for myself that sometimes, certain muscles may become unsteady. Here are three examples: Sometimes it is more difficult to hold my hand still in the air. Another example is how my ...
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1answer
116 views

What are the neurological mechanisms behind risking one's own life for another?

Every so often, we hear of people who go that extra mile and put their life on the line (and sometimes, give their life) for another person - whether it is a loved one or a complete stranger ...
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1answer
34 views

How do we localize pain?

I know that different points of the brain correspond to different point of the body. But how a sensory information reaches its correct corresponding area? For example, let say I put a pencil's ...
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1answer
81 views

How does an understanding of the brain explain why people experience strong emotional responses to major sporting events?

Anyone know studies or theories that explain how massive competition events between countries or parties, like the Soccer World Cup Tournament finals or Olympic Games affect our brains? Why do people ...
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17 views

Is movement/activity level related to serotonin availability or reuptake rates in the brain?

I'm aware of this research article that explores the relationship between motion and serotonin systems: 5-HT and motor control: a hypothesis. Based on the article above, it seems to me that a "very ...
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68 views

What are the brain regions related to tinnitus shown in this figure?

I am interested in learning about the neural mechanisms behind tinnitus, and was wondering if someone could help me to name the parts of the brain on this image that show increased activity in ...
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54 views

Can positive self-affirmation improve mood?

Most people get "depressed" every now and then - nothing serious, but people sometimes feel down. I am wondering if positive self-affirmation can make you happier by physically increasing the ...
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0answers
53 views

What are the smallest neurons ever identified? [closed]

What are the smallest neurons ever measured? I'm happy with any superlatives, such as the thinnest axons or dendrites, smallest somata etc. Thank you :)
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33 views

Are there parts of the brain which don't change over a lifetime?

We know that during our lifetime the brain develops new neural connections and also there is pruning of neural connections. These phenomena together are called neuroplasticity. Is there any research ...
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43 views

What neurotransmitters can be suppressed/promoted by tDCS

Transcranial Direct Current Stimulation (tDCS) has been shown to modify suppression in the visual cortex and GABA suppression in motor control. As of now, the exact neurobiological mechanism that ...
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30 views

How does neurotransmitter distribution and usage vary thought the brain?

I understand that neurotransmitters are used to send signals between neurons in the brain and that some are used for rather specific functions. However, is the exact ...
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55 views

Neuropharmacology and Simulation [closed]

I've been wondering whether neural simulations have had applications in (cognitive)neuropharmacological research already. One always reads about the promise of the technology in helping us cure ...