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Questions tagged [neuroscience]

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

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2answers
106 views

Parallel arrangement of capacitor and resistor in leaky integrate-and-fire model

I have read from several sources that in the leaky integrate-and-fire model of a single neuron resistor (leakage) and capacitor (membrane potential) are arranged in parallel. Look at the following RC ...
3
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1answer
85 views

What extent is non linear dynamics and chaos helpful to study brain function?

Recently I've started reading dynamical systems in neuroscience by izhikevich and was fascinated by the subject. I would like to pursue PhD in computational neuroscience after my masters. Is it worth ...
3
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1answer
70 views

What are the neurological similarities between humans and primates?

I don't know exactly what primate specie is considered to be out ancestor. But the next question regards them. Assuming that in the beginning *we considered true the remnants of many trial & ...
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1answer
28 views

Does anybody know a source having multi-electrode (several channels) recorded data of multiple Neurons (I prefer real data not artificial)?

I mean recorded data of multiple Neurons with multi-electrode. I need this data as the input for my experiment.
3
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1answer
104 views

Is there any evidence for the cell assembly?

What is a cell assembly? In Principles of Neural Science Eric Kandel, and colleagues wrote: After this strengthening has occurred, a group of three neurons that are strongly coupled by excitatory ...
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0answers
48 views

Brain Dynamics at the Edge of Chaos

I've repeatedly come across the claim that brain dynamics operate near the edge of chaos, but usually they do not give any useful sources on how we actually know this. I'm also aware that there are ...
0
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1answer
121 views

What is the neurophysiology of a thought?

PURPOSE 1) To find out if there is evidence in favor of one of Hebb's claim. In is book "The Organization of Behavior" he claimed that cell assemblies are the physiological foundation of thought. ...
3
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1answer
543 views

What does “diffuse slowing” mean in the context of EEG and Alzheimer's?

Horvath et al. (2018) mention that: The disappearance of posterior dominant alpha rhythm and the diffuse slowing in AD (alzheimer disease) are easily detectable EEG signs for the experienced ...
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1answer
50 views

The number of things we can focus on at once

In terms of computer science, a programming runtime like JavaScript can be assumed to have 1 thread, or one thing to focus on at a time. The processor moves sequentially through instructions, ...
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0answers
107 views

ADHD and the Anterior Cingulate Cortex (ACC)

The cingulate cortex plays a significant role in mediating cognitive influences on emotion (Stevens, Hurley, & Taber, 2011). Lower-than-normal activations within cingulate cortex have been ...
8
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2answers
186 views

Why do brains oscillate within specific frequency ranges?

Why do brains oscillate within specific frequencies? I have two specific questions: What are the physiological mechanisms which generate the oscillations within these very frequencies? What would ...
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2answers
131 views

Brain and General Sections

Whereabouts in the brain gets triggered/switched on when an addictive substance is ingested/taken. I'm doing an addiction study with a couple of colleagues and would like some help with it.
6
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1answer
68 views

Do we know a priori any rules about the world?

1) Is there any set of rules that human beings or, more generally, other sentient living beings know a priori before any learning process? In other words, do sentient living beings always were born ...
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29 views

How serious is my case and should I get help? [closed]

So I have been experimenting a bit with pshycadelics nothing too much , I did lsd twice in a period of 3 months , inbetween i have done mdma once. Two weeks after my last use of lsd I started noticing ...
5
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1answer
125 views

NEO-FFI vs. NEO-FFI-3: What's the difference?

I just ran out of a large shipment of NEO-FFI booklets, so I went to order more from PARinc. This shipment has lasted since 2014. It seems that the original version of the NEO-FFI that I was using (...
6
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1answer
84 views

What hormones stimulate non-sexual intimate behaviour?

From wikipedia article sexual motivation and hormones, it is said that testosterone/estrogen, oxytocin and vasopressin are stimulating sexual behaviour. But I'm wondering if any of these hormones are ...
6
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2answers
204 views

The computer model of the brain

I am a computer programmer or computer engineer, and am interested in comparing the brain to a classical computer in some way. How well does this comparison hold up? This is a general introduction ...
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0answers
23 views

Is it an issue to use a model for stimulus selection, when the same model is later tested against fMRI data based on those stimuli?

I am planning an fMRI experiment which looks at similarity of human brain activation when prompted with known words. The goal of the experiment is to compare the similarity of activation with ...
1
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1answer
43 views

What are the top contributions from neuroscience to AI and viceversa? How much progress has been made from the interaction between these two fields?

What are the top contributions from neuroscience to artificial intelligence and viceversa? How much progress has been made from the interaction between these two fields? Is there a formal research ...
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0answers
27 views

What are the thoughts? [duplicate]

At the neuroscience level, what are thoughts? I mean, are they just electrical synapse through the brain in a recognizable patterns? if so, How are those electrical pulses originated?
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28 views

Is subcortical brain possible to investigate with functional resonance imaging (fMRI)?

Signals from Amygdala may be confounded and according to Huettel et al.,2009, "subcortical nuclei such as the caudate, putamen and the thalamus are all sufficiently large to encompass multiple ...
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0answers
29 views

How does the brain learn and execute causal reasoning for short-term and long-term planning?

What does state-of-the-art neuroscience research say about the way the brain learns and performs causal reasoning when it has to come up with short-term and long-term plans in order to achieve a ...
3
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0answers
35 views

Inducing error-related negativity

Which tasks induce the strongest error-related negativity? I'm trying to build a classifier that measures EEG signals to detect when a subject observes an error being committed by another subject. It ...
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0answers
23 views

Somatosensory evoked potentials

I am wondering what the best EEG recording montage is to use for recording of electrically evoked somatosensory evoked potentials after median nerve stimulation?
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1answer
182 views

Variation in prefrontal cortex development

I have read everywhere that the prefrontal cortex is not fully developed until about the mid twenties, but everyone's brain develops differently. Is it possible for a teens prefrontal cortex to be ...
0
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1answer
18 views

Names of branches of neuroscience and related fields dealing with hunger, taste, attachment, and digestion, and their relationship to other perception

I would like to know what the branches of neuroscience, cognitive science, psychology, and psychiatry related to what happens when the tongue touches and other possible related mouth sensors, touch, ...
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0answers
22 views

Negative Rewards(punishment) processing in Human Brain?

Can someone please tell me how negative rewards or punishments are processed in the human brain? Do we have a separate segment to process positive and negative reward and are the positive and negative ...
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0answers
14 views

Can reuptake absorb a selective or non-selective agonist?

For example, a lot of antipsychotics are chemically similar to serotonin, and at least partially trigger certain types of serotonin receptors. Is there any evidence to suggest that, because of their ...
6
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1answer
48 views

Does NMDA-receptor activation depend on neighboring AMPA-receptor activity?

This question is coming out of a couple points of confusion after I learned about about NMDA receptors' role in LTP. I got the impression that after AMPA receptors were activated enough, which ...
7
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0answers
64 views

Probiotics and Mental Health

While trying to find research articles within the realm of Psychosynthesis, I have been looking at the "collective unconscious" Image Source: Wikipedia Commons - (CC BY-SA 3.0) Lower Unconscious ...
2
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2answers
128 views

Are thoughts transferred along with a brain during a brain transplantation?

If I'm transplanted with, e.g., Stephen Hawking's brain, would I start to think like him, or would I remain to think like me? On which, "thinking" ability depends , is it the physical structure of ...
4
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3answers
171 views

Why aren't any advancements being made in physically diagnosing Bipolar and other psychiatric disorders?

I was involved in a discussion where somebody had asked if others had thoughts of doing risky things during their manic episodes. Two people commented, including myself. I worried that only relying on ...
4
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1answer
106 views

How does the brain generate answers to questions?

Firstly, I would say that this question is probably beyond current knowledge. But I would like to hear the latest theories. Given an input "Can you name as many animals as you can until I say 'stop'?...
2
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1answer
101 views

Why do I perform better at rhythm games after a long period of not playing?

Every once in a while I decide to play Phase Shift (very similar to Guitar Hero). I might go weeks or months between plays, but when I return, I often break a high score within the first few songs I ...
2
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1answer
23 views

Stroke amelioration

Excessive sugar, like Pepsi, is considered harmful. However, I am wondering if it could be helpful if taken by a victim of stroke during or immediately after a stroke, or somewhat after a stroke? My ...
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0answers
64 views

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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0answers
28 views

Task-based fMRI dataset with very simple task (e.g. view stripes)

For my Bachelor thesis I need an fMRI dataset in order to look for causal relationships. I want to be able to confirm my work, so the causal relationships should already be known. Therefore, ideally ...
2
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0answers
40 views

Is the phenomenom of “subjective consciousness” or “qualia” formally captured by any state-of-the-art Theoretical Model in Neuroscience?

Is the phenomenon of "subjective consciousness" or "qualia" formally captured or defined by any state-of-the-art Theoretical Model in Neuroscience? If so, can you share a brief summary of such ...
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1answer
1k views

How is the g-factor of intelligence calculated?

I am currently reading Dr. Richard Haier's book The Neuroscience of Intelligence and I am a little confused about the g-factor. Note that I have no education in psychology outside of general ed ...
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1answer
51 views

Do major historic events have a lasting impact on humankind's objective happiness?

In his book "Sapiens - a Brief History of Humankind", Harari argues that the biochemistry of "happiness" in any person can only move within bounds, dictated by genetics. He also argues that happiness ...
5
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1answer
200 views

Is there any disease that prevents a person from being angry?

Is there any disease that prevents a person from being angry? As a reference, the resection of the amygdala reduces feelings of fear. web links ABC news on damage to the amygdala reducing fear ...
2
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1answer
53 views

Is the effect related to shutting your eyes when a car is turning well known?

Since I was little I realized that when you close your eyes when being in a car and the car turns in a street to the side, you perceive the car turning more in one direction than it actually does. ...
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0answers
32 views

Are cognitive functions strictly divided in the left and right hemispheres? [duplicate]

I often see this kind of picture, claiming the strict lateralization of brain functions. Is this valid? Then, what happens to left-handed individuals? Are their cognitive functions also switched ...
0
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1answer
45 views

neurolinguistics: origin of language

Taking the definition of language a symbolic way to represent an object, is there any explanation for its origin? Is it dependent of any part of the brain? Scientific info about this issue will be ...
4
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2answers
133 views

Can an axon connect to dendrites of multiple other neurons?

In a typical multi-polar neuron, an axon has multiple axon terminals that can connect to another neuron's dendrites. Are there cases where an axon connects to dendrites of multiple neurons?
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2answers
121 views

How much pleasure can brain endure?

As of 2018, is it possible to induce pleasure in humans by some intervention like sending electrical signals? I've read that it's been done on mice. If not, it's quite imaginable that it will become ...
3
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1answer
93 views

From a neuroscientific standpoint, what are the most effective ways to develop empathy, love and compassion for others?

From a neuroscientific standpoint, what are the most effective ways to develop empathy, love and compassion for others? For example, in the Buddhist lore there are some meditations targeted at ...
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0answers
41 views

Can someone who is born a psychopath acquire empathy through conditioning and neuroplasticity?

Are there any studies of conditioning and neuroplasticity being used to bring back empathy to psychopaths?
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1answer
41 views

Is it possible to develop dementia by eating bone marrow?

A psychiatrist once told me to avoid eating bone marrow because it could contain prions that could cause dementia. However, I haven't been able to find any studies that confirm this. Could this happen?...
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1answer
27 views

Are cycles possible in circuits of neurons? [duplicate]

If we consider neurons nodes and connections between them edges, are cycles (from graph theory) are possible in the brain? To put it another way, would the signal generated from ...