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

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88 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 ...
7
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2answers
97 views

Which are the multisensory brain areas?

What would be an example of a multisensory brain area, where multiple senses (e.g. smell and taste) are combined to decode the corresponding stimuli from more than one sensory organ? I was thinking ...
4
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0answers
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 ...
6
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1answer
171 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 ...
5
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1answer
111 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 ...
4
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0answers
111 views

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

How can romantic love be described by scientists?
3
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2answers
115 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 ...
2
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1answer
129 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?
5
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2answers
196 views

How would synapses behave if resting potential was zero?

Assuming that the resting potential is zero and the other mechanisms were exactly the same, how would it affect the generation of spikes in terms of excitatory and inhibitory postsynaptic ...
5
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2answers
132 views

Are there useful applications for three channel consumer EEG?

I stumbled upon the consumer EEG Melon (at Kickstarter). It has three electrodes and is advertised as measuring how "focused" you are. In the FAQ it says: The Melon headband has three electrodes. ...
7
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0answers
82 views

What is the mechanism behind unihemispheric sleep in animals?

It is known that dolphins have the ability to sleep with only one half of their brain at a time. According to this popular science source: Dolphins sleep by resting one half of their brain at a ...
2
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1answer
69 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
117 views

Can prolonged neural adaptation lead to HPPD?

The human brain adapts to a constant stimulus of our neural system. For instance, if we ride a train and look out of the window for a long time and the train stops, we have the feeling of slowly ...
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1answer
145 views

How do SSRIs work?

I've found a reasonable explanation on Wikipedia... SSRIs are believed to increase the extracellular level of the neurotransmitter serotonin by inhibiting its reuptake into the presynaptic cell, ...
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2answers
116 views

Does not using the brain erode its power? [closed]

Does not using the brain erode its power? If so, are perpetual brain exercises recommended to prevent (or increase) its power (chess, puzzles, etc)?
2
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3answers
239 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 ...
15
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1answer
428 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 ...
5
votes
1answer
266 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 ...
6
votes
1answer
77 views

In a central pattern generator based on reciprocal inhibition, how does one “side” get picked over the other to start out?

Consider two neurons, A and B, which reciprocally inhibit each other. If both of the neurons receive input at the same time, it seems to me that no oscillation will occur between the two. Such would ...
8
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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 ...
9
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1answer
163 views

What is the difference between psychophysics and neurophysiology?

I'm an engineering student who is doing some subjective tests. What are the difference between psychophysics and neurophysiology? Is it correct that in the latter case, we have to implant to read ...
8
votes
1answer
117 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 ...
4
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0answers
59 views

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

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 ...
4
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4answers
383 views

Computational Neuroscience software

What are the most common software tools you use in your day to day work in computational neuroscience? I am referring to neuroscience tools like GENESIS and NOT to generic tools like Excel.
5
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1answer
37 views

How many thalamocortical relay cells synapse onto each spiny stellate cell in neocortex?

I am curious about how many different thalamocortical relay cells synapse onto each layer IV spiny stellate cell, on average? The answer is likely to be different per region and species, of course. I ...
4
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2answers
240 views

What brain skill does Nonogram (Picross) games develop?

I've been playing Nonogram Picross a lot lately. I really like it and you can always find a harder challenge but I would hate to waste my time for nothing. What brain skill does Nonogram (Picross) ...
5
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0answers
49 views

What are the common nutritional deficiencies in western countries related to reduced mental performance?

What are the common nutritional deficiencies in western countries related to reduced mental performance ? I've heard about omega 3, folid acid, and vitamin D deficiencies, the last two are now reduced ...
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1answer
59 views

Practical Use For a Neuroimager [closed]

You may be aware that neuro-imagers have become much cheaper and many are available with a SDK. I think this will open up a huge gateway for much more intimate human interfaces. However, I am stumped ...
2
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0answers
203 views

How much information does the somatosensory system produce?

Are there any approximations of how many bits of information human somatosensory system produces? Especially mechano-receptors as measured in average number of bits per area of skin per second? I've ...
6
votes
1answer
273 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 ...
9
votes
1answer
137 views

In C. elegans, which neuron has the largest span, and why is it this large?

The model organism C. elegans is about 1 mm in length. This is quite small. In fact, some C. elegans neurons span >25% of the length of its body (ref.). This observation leads me to the following ...
5
votes
1answer
154 views

What computerized EEG analysis algorithms are there?

I got a commercial-grade EEG headband and am trying to look at the data it outputs. The headband quantifies raw EEG signal from a single forehead dry sensor into a range of EEG bands (alpha, beta, ...
4
votes
1answer
87 views

Does the Hodgkin-Huxley Model take into account the action of the ion pumps (e.g., Na-K-ATPase)?

After the firing of a neuron, the sodium and potassium concentration differences vanish. It requires some time for cell to actively transport the ions in and out to re-establish the balance. Does ...
12
votes
2answers
279 views

What causes short-term dysphoria following intense pleasure?

I'm interested in the phenomenon of short term Dysphoria: Dysphoria is a state of feeling unwell or unhappy; a feeling of emotional and mental discomfort as a symptom of discontentment, ...
5
votes
1answer
76 views

How can the aversion response be explained neurologically?

If Dopamine and Dopamine D2 receptor is involved in craving, wanting and clinging towards something or incentive salience Dopamine is closely associated with reward-seeking behaviors, such as ...
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0answers
74 views

Do widespread brain toxins explain violence rates?

Saw this: http://www.motherjones.com/environment/2013/01/lead-crime-link-gasoline Lead emissions from tailpipes rose steadily from the early '40s through the early '70s, nearly quadrupling over ...
2
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1answer
67 views

Is the energy of an action potential divided among multiple axon terminals?

My understanding is that the bulk of an axon is myelinated, greatly adding to the efficiency of transmitting action potentials. However, the axon terminals are not myelinated. I'm wondering if the ...
5
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1answer
75 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 ...
4
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1answer
191 views

How are qualia localized in consciousness?

I understand that evolution incorporated arbitrary qualia into the default network to inform consciousness (the largest cranial global processing information subnetwork) about properties and qualities ...
7
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1answer
75 views

How does one study the effect of a dietary supplement on cognition?

I've really enjoyed this talk by Molly Crockett: Beware neuro-bunk. The speaker outlines the limitations of modern neuroscience when accessing the effectiveness of dietary supplements intended to ...
10
votes
3answers
189 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 ...
2
votes
1answer
185 views

Possibility of perfect virtual reality [closed]

Is it biologically possible to build a "perfect" virtual reality, in which the person in that world cannot distinguish it from the real world? (e.g. as in the movie The Matrix) From my knowledge ...
11
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3answers
289 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 ...
3
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0answers
35 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 ...
3
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1answer
75 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 ...
2
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0answers
118 views

Is happiness a result of cognitive or a side effect of neurobiological processes? [closed]

This morning I've heard this talk on Ted.com: Matt Killingsworth: Want to be happier? Stay in the moment The presenter is discussing an iPhone app used to track happiness, and seems to draw a ...
6
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3answers
142 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 ...
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0answers
283 views

What is a good beginner level book on neuroanatomy? [closed]

I'm looking for a beginner level book on neuroanatomy. I haven't any background in neuroanatomy, other than what I learnt back at school. I'd like to take up a post grad neuroscience course to help ...
5
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0answers
89 views

How can I test whether Dorsal Raphe Nucleus(DRN) activity at night is related to variations in mood?

I'm reading this paper, which discusses Serotonin activity in the Dorsal Ralphe Nucleus(DRN), and even includes some mathematical models of how serotonin is released and reabsorbed. The paper states ...
5
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1answer
125 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 ...