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

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109 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 ...
4
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1answer
84 views

What is the lifetime of the synapse in the mature brain?

I know there is synaptic plasticity in the mature brain. There is a great number of plasticity mechanisms like LTD and LTP, acting on different time scales. Apart from the synaptic weight change, ...
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1answer
171 views

How many calories do we burn when we try to understand mathematical proofs?

While thinking we burn calories. For comparison: "And if it’s the right wood and the right chess grand masters in the middle of a tournament, they are going through 6,000 to 7,000 calories a day ...
4
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1answer
86 views

Are connections in the human brain directed?

Do connections in our brain have a direction, or do they behave equally in both directions? I am especially interested in the structures responsible for memory.
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0answers
107 views

What is the neurobiological basis of Spearman general factor of intelligence?

I found here a brief intro to genetic factor of human intelligence: http://www.ncbi.nlm.nih.gov/pubmed/1036362 Also there is known that gyrus hipocampii is basis of STM which have role in general ...
3
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0answers
64 views

Diagram of the peripheral nervous system of different animals? [closed]

Can anyone recommend a good resource (free or paid) for finding detailed images of the nervous systems of various animals? In particular I am looking for images of the peripheral nervous system of ...
5
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0answers
73 views

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 ...
4
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0answers
143 views

What are the neurological differences between varying types of love?

It stands to reason that the biochemical cascade involved when a person experiences love, gives a feeling of well-being and drive. Studies in neuroscience have involved chemicals that are present ...
3
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2answers
138 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 ...
4
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2answers
163 views

Is it possible to objectively measure the amount of pleasure a person is experiencing?

I'd like to know if it's possible to quantify somebody's "fun meter". Maybe by measuring the amount of endorphin produced. Because every person is unique, I don't expect that amount to make another ...
7
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3answers
350 views

Non coitus sexual activity and the brain

Most animals will only engage in sexual activity that can result in reproduction. There are some exceptions; Bonobos, for instance, engage in a lot of sexual activity that does not involve coitus. ...
3
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1answer
119 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 ...
5
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1answer
177 views

When a person starts to scratch, why does this often start others to scratch?

Often, when a person starts scratching and complains of being itchy, whether they suggest there might be a bug biting them (for example fleas, head lice, mites) another person with them will start to ...
3
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1answer
71 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 ...
4
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1answer
121 views

How does chronic stress improve memory processes?

There seems to be more information on the detrimental effects of stress on memory. There is evidence to the contrary. Stress effects on memory: an update and integration. Schwabe L, et al doi: ...
8
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1answer
90 views

Have there been any mechanisms proposed for normalization in probabilistic population codes?

I heard a talk yesterday by Dora Angelaki about multi-sensory integration. Part of the talk was about bayesian inference with multiple noisy sources of information. I know that there has been a lot ...
10
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3answers
259 views

What neural mechanism explains the tendency to visually attend to the whole scene before attending to details?

I have the intuition that human vision first attends to large-scale objects and then small-scale details. Is there any mechanism in the visual cortex that will explain this phenomenon? Is there a ...
8
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3answers
219 views

Is serotonin conclusively linked to depression?

Some highlights from this article: http://www.thedailybeast.com/newsweek/2010/01/28/the-depressing-news-about-antidepressants.html ever since a seminal study in 1998, whose findings were ...
19
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1answer
634 views

How long should I work before taking a break?

I'd like to work as effectively as possible for 8-9 hours a day, whether at work or studying. At some point in completing my major in psych I remember hearing about the importance of taking breaks ...
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1answer
427 views

Studies linking brain chemistry to sexual infidelity

This study Oxytocin Modulates Social Distance between Males and Females examines the effects of Oxytocin (OXT) on men in monogamous relationships. It demonstrates that OXT assists in maintaining ...
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0answers
96 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 ...
4
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1answer
1k views

How do we get used to smells?

How do we get used to smells? For example, you walk into a room with a certain stench, but it seems no matter how strong it may be, spending enough time in the room will allow you to stop smelling ...
4
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0answers
192 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 ...
7
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1answer
680 views

What is the relationship between sociology and cognitive sciences?

I want to know what is the relationship between sociology and cognitive sciences. Let me start by short consideration of both: Sociology - well established discipline or a field of research ...
3
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1answer
184 views

What is the neurological mechanism responsible for losing one's temper?

I'd imagine that losing one's temper is quite normal, I can not think of anyone who has not experienced it. For me, it is rare, but does happen, I find that there can be 3 broad stages occur (note: ...
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0answers
81 views

Can “7 deadly sins/virtues” be explained in terms of brain hormone level or receptor mutations? [closed]

I'm thinking about this question on biology.se: do hormones make men think of sex? From the interview linked in the answer, I get two takeaways: a man who lost most testosterone for 4 months ...
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0answers
59 views

What are the neurobiological mechanisms behind clumsiness

Some people are inherently clumsy (including your's truly). Everything from frequently stubbing their toes to, as in my case 2 days ago, falling down a single step and managing to crack a rib and ...
4
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1answer
251 views

What are the neurobiological triggers for sleepwalking?

This phenomena has always fascinated me, ever since my parents told me (and filmed me) doing exactly that - sleepwalking. I have read the pamphlet "Sleepwalking" from the Sleep Health Foundation, ...
12
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1answer
317 views

Does cognitive training enhance dopamine release?

Joe Hardy reports on a study by Backman et al (2011) in Science, where from the authors report: Updating of working memory has been associated with striato-frontal brain regions and phasic ...
5
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1answer
71 views

Is the process of long term potentiation (LTP) definitively linked with brain plasticity?

Given that the process of Long Term Potentiation (LTP) is one of the processes that increases synaptic efficacy: Is it reasonable to conclude that the process of LTP is sufficient and necessary to ...
9
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1answer
107 views

What evidence is there that the adult brain can produce new neurons?

At school I was taught that the adult brain did not produce new neurons. That we had the maximum number of neurons and this would only diminish over time due to events, like head injuries, drinking ...
8
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1answer
281 views

Can stress be detected by an fMRI?

How does stress damage the brain (if at all)? Is it akin to taking drugs, heavy drinking, or a minor stroke? Would an fMRI of a stressed person present evidence of stress?
7
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1answer
118 views

Dopamine deficiency more frequent in the addiction prone?

I found this clip about dopamine deficiency. ...[P]eople with low dopamine activity may be more prone to addiction. Is the reverse also true? Does susceptibility to addiction (genetic, etc.) ...
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1answer
252 views

What causes laughter?

I was looking at this video from VSauce: "Why did the chicken cross the road?", where several facts about this old joke are exposed and explained. At some point, (6:59) Michael explains that there is ...
6
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1answer
119 views

What are the neurological differences between those who have a high tolerance to pain and those who do not?

I am curious to learn what are the neurological differences between those that have a high tolerance to pain than to those that do not. Specifically, by high tolerance to pain, I am referring to ...
4
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0answers
56 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 ...
2
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2answers
245 views

Neural basis of primitive (newborn) reflexes

The Wikipedia article on primitive reflexes, or newborn reflexes, states that they originate in the CNS. Here's the list of reflexes from the article: Moro Walking/stepping Rooting Sucking Tonic ...
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1answer
94 views

Are there neurological conditions that can be worsened by B group vitamins?

I know that vitamins B6 and B12 are very important for the brain function, and both are involved in metabolism of homocysteine. Buildup of homocysteine has been associated with cognitive impairment. ...
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3answers
177 views

Abstract idealized mental visualization improves motor task performance

I practice martial arts (Aikido), which involves a lot of rotation. When practicing, I find that holding an abstract image in my head, instead of thinking about the actual technique, improves my ...
5
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1answer
148 views

How is light processed by the human brain when awake and in dreams?

I've recently seen this great video: How your brain tells you where you are. The video discusses how certain cells within the brain fire based on proximity to objects. There are great examples of ...
6
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1answer
280 views

Transsexuality in animals other than humans?

In some research papers, transsexuality is correlated with measurable differences in brain structure. For example: Zhou et al. (1995) inspected the central subdivision of the bed nucleus of the ...
6
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1answer
145 views

Classic cognitive neuroscience studies that highlight conclusions that could not be drawn from behavioral experiments

Background: I studied psychology prior to going into cognitive neuroscience for my PhD. While I know my own area in depth, I lack the kind of broad overview that people who have done their Masters in ...
8
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1answer
195 views

Fusiform Face Area (FFA) for within class recognition?

Is there any evidence (papers, studies, etc) that the Fusiform Face Area is used for any other type of recognition besides facial recognition? I remember hearing or reading a long time ago that ...
2
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3answers
302 views

Getting started with EEG data

I want to get started with getting signals from EEG and learning on how I can read data. I have some programming skills, so designing a database and manipulating data with ruby (python seems also ...
2
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1answer
254 views

Does every human brain have the same shape?

Apart from the general structure (6 layer cortex, same areas, etc.) does every brain have the exact same number and arrangement of sulci, gyri, etc? Do these elements have the same shape?
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0answers
70 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 ...
5
votes
1answer
407 views

What are the effects of social rejection on the brain?

What are the effects of social rejection on the brain? If the external circumstance can not change, how can the impact on the brain be reduced? What is the average sensitivity to social rejection ...
12
votes
3answers
654 views

Is there a better way to describe brain activity than EEG “brain waves”

I've been reading about EEG brain waves, which are specific waveforms that are observed on the EEG output, and are usually scored by humans. This concept has been around for quite some time. Is there ...
6
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1answer
446 views

Neurotransmitters appearance in the evolutionary process

Recently I disagreed with the assumption, that lots of neurotransmitters came within recent 10,000 years of Homo Sapiens evolution. Judging from the available information sources, there is possibility ...