Questions tagged [neuroscience]

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

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74 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 ...
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1answer
145 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
883 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
55 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
178 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 ...
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2answers
219 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
153 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
70 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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30 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
189 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
101 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 ...
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226 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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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 ...
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1answer
46 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
28 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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38 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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24 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?
5
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1answer
214 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 ...
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1answer
25 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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26 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
15 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
52 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 ...
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79 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 ...
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2answers
147 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 ...
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3answers
179 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
117 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'?...
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1answer
275 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 ...
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1answer
26 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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68 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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31 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 ...
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45 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
2k 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
53 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 ...
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1answer
226 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 ...
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1answer
54 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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60 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 ...
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1answer
48 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 ...
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2answers
195 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
136 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
106 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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48 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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2answers
72 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
28 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 ...
4
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2answers
142 views

What exactly does paranoid mean in terms of psychoactive drugs?

When I went to my local marijuana dispensory, since recreational use of it is legal, they told me that when I first use it, I might get paranoid. When I read this word in context, I imagined somebody ...
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409 views

Is Tinnitus a result of brain damage?

It is well known that loud noises can lead to hearing problems such as temporary hearing loss or tinnitus (ringing in the ears) and even permanent hearing loss. But this is the first time scientists ...
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1answer
223 views

Jung's Anima and Neurological Basis in Split-Brain Patients; Left-Persona and Right-Anima

So, having skimmed some studies on split-brain patients, it makes me wonder about the whole "left-brain/right-brain" dichotomy that made its rounds in public perception some time ago. I'm not sure ...
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1answer
51 views

In TD learning, is the weight function used as a linear filter?

In the Temporal difference learning algorithm (TD-learning), an agent seeks to predict the total value of future rewards that will be received during the current trial. The agent updates the ...
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2answers
2k views

Can you get addicted from using topical or local anaesthetics to ease pain?

I've been wondering if there was such a thing as developing some kind of physical or psychological dependence on things that relieve pain. While we often hear about opioid addiction, which is ...
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0answers
137 views

Are there any practical implications for the purported neuroprotective effects of lamotrigine?

Lamotrigine is an antiepileptic drug used to treat seizures. Off-label, it is used to treat a variety of neurological and psychiatric disorders. Judging from Google Scholar, lamotrigine continues to ...
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2answers
2k views

Due to Gestalt Psychology, is the face an illusion?

Gestalt Psychology maintains that we perceive a whole from parts, and that we fill in missing gaps. The "whole" we perceive is more than the sum of parts we perceive - it also involves what our minds ...