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

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36 views

Source of sensory data related to cognitive effort

How does the brain assess cognitive effort? Is there a chemical that is being created or consumed at a rate that is proportionate to the amount of effort felt? I'm mostly interested in short term ...
4
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1answer
92 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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33 views

How to write a neuroscience research abstract? [closed]

I might have to start working on a research abstract for college soon, and I am looking for basic tips on beginning one. I don't mean information about the research specifically; I simply mean ...
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2answers
123 views

Is the split-brain, dual consciousness experiment from Rhawn Joseph valid?

I have been reading about the problem of possible dual consciousness in split brain patients and I came across this wikipedia page. In the "other experiments" section, the two last paragraphs about ...
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0answers
48 views

Is the fight or flight response considered voluntarily or involuntarily?

I look in my rearview and see someone feet from me still speeding up and my heart rate feels like it doubles. It stayed like that for an hour. Had troubles concentrating and working well into the ...
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0answers
48 views

Why cerebellar input fibers use 2 ways to send a siganl to DCN?

Both groups of input fibers of cerebellum (mossy, climbing) start 2 pathways: 1) project directly to the deep nuclei 2) project to cerebellar cortex, which then (after some processing) sends ...
2
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1answer
177 views

“top-down” and “bottom-up” processes

What kind of processes are "top-down" and "bottom-up" processes in the context of processing visual information in brain? Context: ...There are discrete areas in the visual cortex dedicated to ...
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0answers
33 views

What is the importance of Dissociation (Both Double/Single) in a Distributed Hierarchical Organisational model of brain function?

How does Dissociation fir with a Hierarchical Organisational model Like Luria's or Distributed model of Fellman & Van Essen? Also, how may patients do you think should be the minimal amount in ...
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41 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 ...
5
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1answer
57 views

What are 'gap junctions' (electrical synapses) for?

I was reading this and I found the following sentences: Apart from chemical synapses neurons can also be coupled by electrical synapses, so-called gap junctions. Specialized membrane proteins make ...
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2answers
44 views

Are there models of single neurons on slow timescales?

From what I've come across on the web, most models of single neurons seem to focus on the "fast timescale", where electrical signals are transmitted from one neuron to another. However, neurons are ...
5
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1answer
96 views

Predictive Experiments on Neuroscience of Free Will

It seems to be very interesting that we can use modern neuroscience and cognitive science research to inform us about the ages-old question of free-will vs. determinism. The standard experiment was ...
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1answer
104 views

Are the physical sensations of an emotion due to neural activity strictly in the brain or also in the body?

Symptoms of anxiety and anger are often described as some sort of energetic sensation in my chest and sometimes face or arms. Are these sensations an 'illusion' from neural activity strictly in the ...
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1answer
285 views

Does adult neurogenesis occur only in the olfactory bulb and the hippocampus?

The scholarpedia article on this subject says: Adult neurogenesis is the process of generating new neurons which integrate into existing circuits after fetal and early postnatal development ...
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0answers
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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31 views

Results from machine learning converging with results from neuroscience [closed]

I'm currently picking up deep learning, which is a trending method in the field of machine learning that have recently gained fame for breaking various records (for example in image recognition). It ...
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1answer
123 views

Can Transcranial Magnetic Stimulation (TMS), or a magnets cap make you smarter?

According to wikipedia, TMS is a bunch of magnetic fields directed to the brain which stimulates and activates neurons. If I wear a cap full of magnets, will it stimulate my neurons? If yes, will a ...
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1answer
95 views

Are the human cerebral hemispheres only connected via the corpus callosum?

Are the human cerebral hemispheres only connected via the corpus callosum? Or is there any other structure for interaction between the left and right hemispheres?
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1answer
95 views

How does it come about that specific areas of the brain are associated with specific functions?

During the development of the human brain, specific areas come to perform specific functions. How (and when) does this differentiation come about? Presumably, some areas of the brain naturally take ...
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1answer
52 views

Parasite that takes over cognitive functions [closed]

I am testing an idea for a book. The backbone of the story is that there exists a parasite that can enter the brain of a creature and take over its cognitive functions. I imagine that it could wire ...
6
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2answers
186 views

How do neurons decide how to alter their output signals?

In computer science, neural networks are trained using backpropagation and other methods. Backpropagation heavily relies on mathematical formulas to describe how the weights should be changed ...
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2answers
2k views

What is the role of Chloride (Cl- ions) in membrane potential?

This Membrane Potential article mentions only that Cl- ion is used to model inhibitory GABA synapses. Does it have another role besides hyper-polarizing the cell due to inhibitory neurotransmitter ...
6
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1answer
115 views

Could ketosis be therapeutic for ADHD based on the neuro-energetic theory of attention?

I'm a complete neuroscience novice so please bear with me. One of the more interesting theories of the etiology of ADHD that I've read posits that the disorder may be one of neuroenergetics - the ...
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1answer
56 views

Unified Theory of the Human Brain [closed]

I'm a junior researcher(Life Sciences undergraduate) starting out in computational genetics of neuroscience, and I want to create a Unified Theory/Computational Model of the human brain and all its ...
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111 views

Lifelong avoidance coping style [closed]

Suppose someone has been using avoidance coping style for most of his or her life. The avoidance tendency is present in a broad range of situations, relatively constant through his or her life, not ...
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2answers
84 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 ...
5
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1answer
162 views

Is there a biological limit for “amount” of happiness?

I have heard about neurotransmitters like dopamin and serotonin that are supposed to play a role in our feeling of happiness. I don't know how these chemicals works in our brain, but I am thinking ...
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0answers
58 views

What personality traits correlate with estrogen? [closed]

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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0answers
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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1answer
54 views

Does synesthesia lack symmetry?

Some synesthetes report seeing bright flashes when hearing a loud noise. However, in the same person, bright flashes of light are not reported as being loud. I've read of other examples like this; ...
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0answers
54 views

What exactly is an astroglial calcium wave?

There are quite a few conflicting reports as to what stimulates them, how they propagate, whether they communicate intercellularly, and what they look like. The only consistent information I can ...
3
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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 ...
6
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1answer
133 views

What is the neurophysiological mechanism behind double hearing?

A patient with sensorineural hearing loss can have the symptom of hearing "double" in the damaged ear. Not having a time-delayed echo, but hearing as if he (or other people) speak with "two voices" at ...
3
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4answers
215 views

If a human brain would be placed inside that of an animal: Could it talk?

Assumption: Animals can't talk 'human' because of their small(er) brain. Perhaps a strange thought, but I was really wondering: If we could place a human brain inside that of an animal: Would we be ...
3
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1answer
71 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 ...
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2answers
3k views

Why is the order of white/grey matter different in the brain and spinal cord?

In the brain proper, grey matter forms the outer layer of the brain, and white matter forms the inner layer. In the spine, this is reversed: white matter forms the outer layer of the spine, and grey ...
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0answers
102 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 ...
7
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1answer
47 views

Classical conditioning paradigm for hippocampal learning

I wanted to know what a suitable classical conditioning experiment would be to analyze learning and memory capabilities in rodent models with respect to hippocampal long-term potentiation (LTP). For ...
10
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1answer
334 views

Can stress or training influence the perception of time?

I have had this experience that I fell with my bike on an icy street. During the fall time seemed to slow down and I had an apparent age-long time window to stretch my hand and safely catch my fall. ...
2
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0answers
36 views

Neurobiology of addiction recovery [closed]

While addiction is one of the most studied topics in neurobiology, I don't see very much info on recovery. The information I have found is confusing. This one says striatal DAT bindings return to ...
9
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1answer
74 views

Does an action potential abolish an excitatory postsynaptic potential?

From some sources, I've read that excitatory postsynaptic potentials (EPSPs) decay over time, which would imply that they aren't abolished by action potentials. However, other sources seem to indicate ...
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1answer
124 views

How similar are the brains of twins?

I am currently reading undergraduate essays on biological dysfunction and schizophrenia. The students put a lot of weight in the fact that studies of monozygotic twins show only a 50% rate of ...
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1answer
57 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 ...
5
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0answers
41 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 ...
5
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1answer
430 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 ...
10
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1answer
144 views

Are the center surround receptive fields learnt or inherited?

I know that neurons higher in visual pathways can learn their receptive fields after birth, but what about the connections between bipolar cells and Amacarine cells which form center/surround on/off ...
7
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1answer
291 views

Why does anger “cloud the mind”?

There are a lot of anecdotes on frustration and anger inhibiting judgement and problem solving. Examples include "anger clouding the mind" in pop culture, or in programming, where a rule of thumb is ...
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0answers
44 views

Psychological problem with glasses and hats on head? [closed]

I knew a kid who, when they was little, they would have attacks when a relative removed their glasses. She would sometimes do it on purpose in front of them and they would have emotional outbursts ...
3
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1answer
55 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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0answers
41 views

How does de-myelination occur in multiple sclerosis? [closed]

From what I understand, only the oligodendrocytes are affected in multiple sclerosis, and they are attacked by T cells which cross the blood-brain barrier. This leads me to two questions: How is the ...