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

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Has a Split Brain patient's right brain been asked if he has qualia?

For split brain patients, usually only the left brain is capable of language and thus deep communication is done only with that part. However, some split brain patients have a more or less language ...
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1answer
22 views

The function of pumps in forming the resting potential

I am confused by the following. Apparently the resting potential of -65mV is reached when the two forces, diffusion and electrical gradient are in equilibrium. So why does the book say "The ...
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2answers
106 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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49 views

Why does optogenetics not mean that perfect brain-computer interfaces are possible?

There have been multiple articles and videos circulating on the Internet claiming that optogenetics has made it possible to have perfect input/output to the brain from a computer. This is obviously ...
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1answer
70 views

MRI images upside-down in FSLVIEW

I'm visualizing structural data in FSLVIEW, but the sagittal and coronal planes are both upside-down / not in the conventional orientation, i.e. rotated by 90º and 180º. I understand that this ...
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1answer
116 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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3answers
195 views

What's the major difference between mind and brain?

I am preparing a presentation on "Mind Reading Computer", and all articles that I came across were focused on reading interpretations from brain through sensors. Articles like this clearly show a ...
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1answer
140 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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284 views

How does the brain learn what something is for the first time?

I'm trying to understand how the idea of what a thing is originates in humans. For example, in computer science, it is possible to know what an object is and what it does, by examining its ...
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1answer
36 views

What is the current consensus on if fMRI studies in blood flow actually match brain activity?

How good is blood flow (BOLD signal) as a measure of actual neural activity? What deficiencies exist?
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1answer
91 views

Can tinnitus be measured with EEG or MEG?

Can tinnitus be measured with EEG or MEG (magnetoencephalography)? Is it visible in a power spectrum? In an ERP/ERF?
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26 views

Do our brains have difficulties detecting no?

In most business seminars, or in movie the secret, for example, it is said that if we want to be rich we need to believe we want to be rich. We got to want peace, not anti war. We got to be pro ...
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61 views

Are our brains just energy conserving systems? [closed]

Is the brain a purely energy conserving system that creates behaviours for conserving the energy distributed to the brain, based on the input of sensory information that our bodies take in?
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How is fasting related to insomnia?

Yesterday I started a new diet using intermittent fasting. For this reason I only ate one meal all day. I was pretty surprised how well I passed that day: I studied a lot, did some sports and ...
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69 views

Does data support Domhoff's neurocognitive theory of dreams?

Background: A friend described consistent feelings and themes during a dream. It is my understanding that the contents of our dreams are our subconscious/unconscious/preconscious processing stimuli ...
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1answer
55 views

Is there another example of a strongly emergent phenomenon besides the mind?

If you agree that the mind arises from the brain and is an emergent property of it, then the mind has to be strongly emergent, rather than weakly emergent. Is there any other example in reality of a ...
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2answers
151 views

Does law of attraction have psychological basis? [closed]

A common claim in business and self-help seminars is that optimists are luckier. Is it true that optimism leads to greater success in life? If so, what part of the brain support this so called ...
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1answer
65 views

How does the brain learn abstract maths?

I have found quite a bit of information of how, on a neurological level, we learn the most basic forms of maths. We seem to be hardwired from the get go, to deal with manageable quantities, can ...
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2answers
218 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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1answer
74 views

Structural descriptions of neuronal networks are important for understanding brain dysfunctions; which dysfunctions, in particular?

In a recent paper, we find this quote: The brain contains vast numbers of interconnected neurons that constitute anatomical and functional networks. Structural descriptions of neuronal network ...
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1answer
371 views

Modern replacement for Panksepp's “Affective Neuroscience” book?

Jaak Panksepp's book (Amazon link here) is a phenomenal and highly readable systems-based introduction to not only affective neuroscience, but the neuroscience of motivation in general. The problem ...
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2answers
63 views

Sensitivity of human eye to luminance

I heard once that the human eye has a logarithmic scale for luminance, e.g. to "feel" that a surface is three times as luminous compared to another, the former emits a light 8 times more powerful than ...
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2answers
61 views

How to make diagnosis of these symptoms using Pet scan, fMRI, and EEG?

The symptoms are muscle weakness, slow reaction time, visual perception issues, seizures, hearing loss, weight gain, general sense of pain and delusions. Using the above scanning techniques, a doctor ...
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2answers
83 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
68 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
122 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 ...
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1answer
78 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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45 views

Neurotransmitter control via biofeedback?

According to this thread, certain regions of the brain, and even some distributed activation patterns can be up/down regulated via bio-feedback. Is it possible in theory and is there any research ...
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90 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 ...
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57 views

Diagram of the peripheral nervous system of different animals?

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 ...
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53 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 ...
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92 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 ...
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2answers
112 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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2answers
579 views

What do the super-large brains of whales and elephants map to?

Elephants and whales have brains that are much larger than those of humans. It is presumed that much of their brain is used up for their larger bodies (after all, there is a allometric scaling between ...
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121 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 ...
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3answers
251 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. ...
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1answer
97 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
100 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 ...
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1answer
59 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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1answer
105 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: ...
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1answer
83 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 ...
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85 views

Why does strobe lighting trigger seizures in photosensitive epilepsy?

Photosensitive epilepsy (PSE) is a form of epilepsy in which seizures are triggered by visual stimuli that form patterns in time or space, such as flashing lights, bold, regular patterns, or ...
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186 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 ...
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3answers
155 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 ...
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1answer
400 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
250 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
87 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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1answer
618 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 ...
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157 views

Plot a schematic outline of the brain

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 ...