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

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Are there specific neurotransmitters for specific sensations?

Nerves can detect pressure, temperature, light (eyes), sound, friction- at least. Does each sensation have its own neurotransmitter? I'm only a little familiar with neurotransmitters. This page ...
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1answer
59 views

Can dendrite spines fire action potential toward the soma?

I am confused about how the signal propagates from the dendrite spines toward the soma. I believe it is commonly taught that the signal diffuses "passively", i.e. electrostatically with no ...
4
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1answer
291 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
87 views

When does reward occur? When dopamine is released or when it is binded?

I know this is a silly question, but I'm curious as to what is the exact phase when we experience of the thrill of doing an exciting activity. I believe this briefly describes the whole process. So, ...
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1answer
97 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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21 views

Does testosterone level cause more sexual dream content?

I have long been interested in dreaming, including how dream content can shed some light on brain chemistry. I did a search on the subject of testosterone levels altering dream content and see some ...
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1answer
52 views

Is the ordering of Brodmann areas arbitrary?

A single Brodmann area is defined based off cellular composition. Are the Brodmann areas ordinal, and if so for what reason? (e.g. is there something that makes Brodmann area 1 the "first one", and ...
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26 views

How separate are the left and right hemisphere vasculature?

It appears as if there are communicating arteries between the right and left hemispheres of the brain, but it is difficult to grasp the larger picture. To what extent is the blood supply to each ...
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59 views

very weird Split Brain Dual Consciousness experiments references on Wikipedia

I have been reading about the problem of possible dual consciousness in split brain patients and I came across this wikipedia page about: ...
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38 views

How common is it for twins conjoined at the head to share thoughts and visual stimuli?

I've always been interested in the possibility of a pair of conjoined twins, joined at the head, being able to read each other's thoughts, react to stimuli that one of them can't see/hear/feel, and ...
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32 views

How are psychological bio-markers discovered?

Recently, this paper claiming to be able to distinguish bipolar disorder from major depressive disorder via a urine sample has come to my attention. Despite reading the paper, I'm unable to ...
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53 views

What personality traits correlate with estrogen?

I'm looking for psychological traits that are proved to correlate with estrogen levels. Anything of specific behavior, attitudes, life styles, emotions, preferences, you name it. (I'm looking for ...
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39 views

How does oxygen deprivation affect neural activity?

It is increasingly common for someone to regain a heartbeat after a cardiac arrest. During the time that the person is without a heartbeat, and so without circulation, the brain is deprived of oxygen. ...
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94 views

Have any drugs been shown to increase the neuroplasticity of adult brains?

I read recently in the book "meet your happy chemicals" that the hormones of puberty are neurochemicals that cause your neurons to connect and myelinate more easily. If this is true have any studies ...
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44 views

Why does the unilateral 6-OHDA lesion Parkinson's model cause ipsilateral rotations?

As far as I understand, the loss of dopaminergic neurons should hinder movement in the contralateral side of the body, resulting in contralateral rotations when the animal tries to move forward.
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65 views

What is the relationship between topographic maps and sensory memory?

Sensory maps are defined functionally: they exist for a certain time window, are overwritten quickly, are generally inaccessible to introspective control. Topographic maps are defined biologically: ...
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99 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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85 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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59 views

What regulates the strength of motoric signals?

I've seen cognitive/roboter models where the input signals from the sensors are directly used as the signal for outgoing motoric control. This doesn't make much sense, because obviously we're able ...
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0answers
200 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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0answers
445 views

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

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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1answer
91 views

Interpretation & Actual Result of “10% of your brain” Myth

It is well known that the common myth that an individual only ever uses 10% of their brain is.. well, a myth. I had a question about a possible interpretation of this idea, and a follow-up question ...
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3answers
156 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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2answers
113 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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2answers
150 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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1answer
726 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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1answer
22 views

Voltage sensitive dyes technique: What is the underlying measure?

I just discovered voltage sensitive dyes technique: I have seen that figures are labelled with dF/F0, what does it stands for?
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89 views

Which parts of the brain are affected by dopamine?

Does dopamine spread and interact across the whole brain? If not, which areas are affected most and which least?
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80 views

Are action potentials necessary for experience?

We know that, for example, during brain surgery, electrical stimulation in certain parts of the cortex is sufficient for experience, and result in reportable experiences in human subjects. We also ...
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2answers
130 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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2answers
71 views

Result of local stimulation in brain

What happens when we stimulate a brain in local regions? Some possibilities: We may trigger an action without the subject's awareness of the action; We can trigger an action in a subject, but we ...
3
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1answer
67 views

What are the highest ranked neuroscience journals that use double-blind review process?

In terms of impact factor (for a lack of a better proxy), what are the highest ranked neuroscience journals that use double-blind review process? I would be submitting a paper that combines ...
3
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1answer
85 views

What is the neurobiological difference between Jungian Judging and Perceiving individual?

Jungian or Myers Briggs type indicator reserves the last letter of a 4 letter archetype to stand for Judging or Perceiving. Part of being a Judging type is punctuality - being on time, keeping ...
3
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1answer
79 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
296 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
328 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
355 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?
3
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1answer
116 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. ...
3
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1answer
100 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
55 views

What is forward masking

I am trying to understand what is visual masking (or more specificaly forward masking). I have read the explanation here, but still.. I understand that a background can interfere with a frontal ...
3
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1answer
55 views

Is the weight of neural inputs in the human brain as central as it is for neurons in an artifical neural network?

As an example of an artificial neural net (ANN), a neural processing unit (NPU) is able to encode previous (learned) information by storing a weighted resistance for each input. Since ANN's are ...
3
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1answer
58 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 ...
3
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1answer
61 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 ...
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3answers
49 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 ...
3
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1answer
685 views

Can the neuronal firing rate be increased through medication/diet?

My rudimentary understanding of the neuronal firing rate is that it varies person to person, and neuron to neuron. So any specific number for a firing rate would be specific to the test subject and ...
3
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1answer
208 views

Does the human visual system implement (adaptive) histogram equalization?

The human visual system is very good at 'cancelling out' shadows and other lightning effects, and focusing on the contrast in images. A famous example of this is Adelson's checker shadow illusion: ...
3
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1answer
29 views

Publicly Available NEURON models

NEURON is a software package for simulating neurons and networks in great detail. Although it's quite easy to find papers that use NEURON with a simple Google Scholar search, is there some way to find ...
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1answer
98 views

How to build a high sensitivity EEG headset for continual monitoring?

After having a conversation with a couple of the more popular "consumer" level EEG makers such as Versus, I have found that their monitoring abilities are either ...
3
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3answers
96 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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1answer
146 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 ...