Questions tagged [neuroscience]

For questions on the structure and function of the nervous system.

180 questions with no upvoted or accepted answers
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Task-based vs task-positive networks

Do the terms "task-positive network" and "task-based network" refer to the same thing, such as the Fronto-Parietal Control Network (FPCN), as distinct from the task-negative networks such as the ...
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Does increased motor development always occur at the expense of speech development, or vice versa?

It is often said that infants / toddlers* develop in a focused manner. I am specifically interested in the notion that a quick development of speech occurs at the expense of motor skill development ...
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Infants tend to look longer at novel stimuli than at repeated stimuli, is this true in adults?

I have recently read an article in which it is stated, that the researchers can discriminate if a baby knows an object, by looking at the length of time the baby looks at the object. Do adults also ...
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Neurotransmitter detection in the brain

How are the effects of drugs in the brain, in terms of neurotransmitters measured? For example, Selective Seretonin Reuptake Inhibitors are a class of anti-depressants. How was and is this type of ...
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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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How does neurotransmitter distribution and usage vary thought the brain?

I understand that neurotransmitters are used to send signals between neurons in the brain and that some are used for rather specific functions. However, is the exact distribution/concentration/...
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Can microdialysis be made in Drosophila melanogaster?

Microdialysis is a common method to study the effects of drugs on specific mamal brains zones (mostly in rats), in order to study the it's interaction with the function of those specific areas that ...
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489 views

How does the body experience free-fall during a hypnic jerk

Today I learned that a sudden jerk that you sometimes experience when you are just about to fall asleep due to a sense of free-fall or weightlessness is called a hypnic jerk. If, while sleeping, I ...
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2answers
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Why is it only positive charge that gets injected into a neuron when we inject a current into it?

Learning about the basics of theoretical neuroscience from the youtube lectures from Michale Fee's introduction to neural computation course. We're considering a very simplified model of a neuron, ...
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1answer
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What's the exact definition of a cognitive mechanism?

I've been trying to get to a specific definition of a cognitive mechanism, but googling it surprisingly didn't give me anything. The only things I've found out are : How to know if something can be ...
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From a neuroscientific point of view does internet gaming disorder have the same effect on the brain as porn addiction?

Wang, et al. (2015) proved that among people with internet gaming disorder GMV (Gray Matter Volume) of the bilateral anterior cingulate cortex (ACC), precuneus, supplementary motor area (SMA), ...
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Question about nest cell

I'm reading the PNAS paper Neural encoding of the concept of nest in the mouse brain by Lin et al. 2007 A certain 'nest cell' is described in the paper that fires only when the mouse approaches its ...
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Is the GMC (ganglion mother cell) in Drosphila the same thing as the basal daughter cell? Does a highly active Notch pathway obstruct cell division?

"Numb acts as a negative regulator of the Notch pathway (discussed above), which keeps Notch pathway activity low in the GMC. Low Notch activity causes the de-repression of proneural genes, as ...
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Different plasticity mechanisms in different species

Are the neural plasticity mechanisms behind learning essentially the same across different species? For instance, is STDP assumed to be a standard mechanism in almost anything with a brain, or is it ...
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64 views

Rate of Change in Neural Plasticity

I read that children brain has more neural plasticity compared to adults, with the possible explanation as appeared in this question, pertaining to synaptic changes, where if you learn something, the ...
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72 views

How does the brain interpret electrical brain stimulation?

I believe I understand the natural path, in which stimuli appear and by neural plasticity our brains "learn" these stimuli. I recently learned about electrical brain stimulation and I was ...
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39 views

Are there any ways to naturally speed up my reaction speed without any drugs?

I play a lot of video-games and did some research online and came to the conclussion that a certain set of things are linked to an above average reaction speed and an general improved cognitive ...
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34 views

Biological Neural Network Modification to Unlearn Understandings

Lets assume that a person grows up thinking that religion X is true religion. So he builds up a profile in ones head and when notion of religion X appears the neurons that is related are fired, giving ...
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Is there any correlation between conection and function?

I have been searching why different functions exist in even a similar structure cortex. The first reason is differences in cortical neuron density. The neuronal density contour plot (Fig. 1D) reveals ...
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A new kind of optical illusion?

By accident, I stumbled over this optical illusion: It is not a strong one, and maybe you don't experience it, but I see the size of the circles in the second last row decrease from left to right. I ...
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Function of the Left Medial Prefrontal Cortex

I am searching for a specific (as specific as is currently known) region of the brain that has a known(?) large role in deductive and inductive reasoning. My research has narrowed me down to the Left ...
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What effect does the size of the soma have on firing characteristics?

For example, cells in layer 5 of the neocortex have a larger soma than do other layers. I'm wondering what the functional difference is between smaller and larger soma. On one hand, I can imagine that ...
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Minimum constant neuron firing rate

Please forgive what may be an elementary question for many of you. I am trying to understand the range of firing rates in an idealized neuron. I understand what governs the maximum firing rate of a ...
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Is a New Software Library to Simulate Natural Processes like Hunger Needed?

This sort of dovetails off a question I asked on the AI Exchange: Is There A Need For Stochastic Inputs To Mimic Real-World Biology And Environment? I figured this site would give more insight on ...
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What determines whether a monoamine neurotransmitter is recycled or broken down by MAO?

When a neurotransmitter detaches from the receptor and is returned to the neuron via the transporter, what are the primary factors that influence whether that molecule is re-stored in a vesicle by ...
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What characterizes Grossberg's resonances?

Following Bryan Krause's advice I tried to be more specific and picked as one specific neural theory of consciousness Stephen Grossberg's Adaptive Resonance Theory in which a specific group of ...
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34 views

Retinotopic mapping to higher visual cortex

I know visual stimuli from retina presented in Cartesian coordinate is mapped to V1 as a form of polar coordinates. Wikipedia, Scholarpedia But I wonder whether this spatial representation in polar ...
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What happens neurologically and chemically when an individual is confused?

For example, trying to understand a mathematical problem and its solution, or abstract reasoning, but in the process get lost even have no clear idea of what part is 'not understood'
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Neuralink in depression treatment

In this article there is a statement that Neuralink can help people with Parkinson’s disease, epilepsy, and depression by promptly sending electric pulses into the areas responsible for their ...
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123 views

Neurodevelopmental Disorders, Cognitive Function and Causing someone to Learn

Children may elicit, either through active engagement or some feature of their personality or appearance, a response from their environment that might protect them from deprivation-related risk either ...
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Bipolar Disorder Patient data

Can someone provide me with an electrocardiogram signal of a bipolar patient? I'd like to have a trace obtained in an intermittent period, i.e., when the patient is not experiencing a depressed or ...
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143 views

Is there a neurological reason why women do not occupy top positions in the chess ranking?

I want to turn arround this question posted on chess exchange where sociological arguments are given to explain why only two of the world's top 100 chess players are women. Are there neurological ...
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220 views

What's the pathfinding algorithm the human brain uses?

I was trying to build a software simulation of people using different pathways in a city to get from point A to point B. I do know the Dijkstra's algorithm and the A* algorithm, but what they do is to ...
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Has there been any neuroscientific study of polydactyly?

I have been reading about polydactyly and found that surgery is only necessary in certain cases. It depends on way the extra digit on the hand or foot is attached. For example, central polydactyly (...
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Which neurodevelopmental disorders constitute learning disabilities?

I am actually looking at DSM-5 but I cannot find any exhaustive or otherwise comprehensive list or explicit association of which neurodevelopmental disorders are also learning disabilities.
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when is default mode active

AFAIK default mode is important for our well being since as I am concerned one of its functions is to make sense of things we learned, experienced, etc. Here is says default mode is active when ...
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Lovheim cube research

Is there any psychology research into the validity of the Lovheim cube of emotion? Aside from the original paper (Lovheim, 2012) and papers from computer sciences (the cube is being used for ...
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Why does “name it to tame it” work from an evolutionary psychology perspective?

There seems to exist a phenomenon where being aware of one's feelings gives us power over them. I have seen this in everyday life, but the strongest piece of evidence I've seen is from a talk by UCLA ...
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fMRI datasets for emotion states

Would there be any open fMRI datasets available that specifically analyse a subjects emotional state? The objective is to apply deep learning methods to categorise subjects emotional state based on ...
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227 views

Can tapering reduce the risk of sedative kindling and brain damage?

So we know that repeated withdrawal from GABAeric substances like alcohol and benzodiazepines will cause kindling and worsen future withdrawal symptoms. Also, it appears that withdrawal from alcohol ...
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Temporal and frequency analysis of brain network to study autism disorders

I know it has shown in the literature that autism disorder affects brain network connectivity based on rs-fMRI data (Plitt, Barnes, & Martin, 2015). They have local over-...
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What are the names of the white matter tracts in the cortico-ventral basal ganglia circuit?

I am looking at diffusion tensor imaging (DTI) data. The data are clustered by regions of interest (ROIs). The clusters have locations with names, which I have listed below. Which location names ...
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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 ...
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42 views

How can we analyse user behavior to predict urge of smoking?

The problem which I want to target is to be able to successfully predict (to a degree) that a person is going to smoke in near future. I want to look at the relationship between chemical reactions ...
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How can we use EEG data to predict urge of smoking?

I am from Computer Sciences background. The problem which I want to target is to be able to successfully predict (to a degree) that a person is going to smoke in near future. I have a brainwave ...
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74 views

Brain structures related to risk-taking behavior

I did a preliminary research on brain structures in which activity might underlie risk-taking behavior. I came to two research that described right prefrontal cortex (Knoch et al., 2006), or ...
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2answers
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Why both hypokinetic and hyperkinetic changes are seen in Parkinsons?

In Parkinsons disorder the substanstia nigra pars compacta get affected and there is destruction of the dopaminergic neurons, which ultimately disturbs the direct and indirect pathways. Now we know ...
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1answer
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Measuring postsynaptic potential vs action potential at axon hillock?

I have been reading literature regarding Neuronal potential measurement. Conventionally, researchers use electrode-based method to measure action potential. However, as it's of high invasiveness and ...
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1answer
133 views

Quit smoking supported by mental training

Given that mental training/workout releases acetylcholine (something I read in a popular-scientific book and on Wiki, see also below) , and that acetylcholine and nicotine bind to the same receptors. ...
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Difference in neural activity of a thought vs. a memory

I want to understand the difference in neural activity between a "thought" and a "memory impression". Is it a "thought" while the neural activity is present in working ...