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Questions tagged [neuroscience]

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

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How do we imagine? How do images have qualia?

After reading a bit about qualia and hard problem of consiousness, I came up to theoretical solution. The reason why we have this problem is because we can imagine. We can imagine an object visible to ...
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How are tactile pleasure and pain differentiated in the somatosensory cortex?

A recent question here asked about (mostly) how pain and pleasure are differentiated in pathways involving reward/aversion cues. But there was some confusion as to what the question really wanted to ...
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Can addiction develop to the absence of a normally present negative stimulus?

I am wondering, can someone become addicted to the absence or the removal of a negative stimulus? Normally, addiction is associated with pleasure-inducing drugs, like opiates and amphetamines as ...
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1answer
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Is there a region of the brain that mediates pain in a manner reminiscent of the mesolimbic pathway?

The mesolimbic dopamine pathway is a common neural pathway upon which rewards converge AKA the pleasure pathway. So I am trying to find a comparable pathway in the brain for pain -- is there such a ...
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Will studying formal logic improves logical reasoning?

Reason for asking question: I am looking to see if there is any good empirical evidence or study that shows or suggests that studying former logic or maybe informal logic would actually improve ...
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1answer
28 views

How is the relationship between hypothalamus and homeostasis & fear and how does it evolve across human development stages?

This is my claim, or what I [mis?]understood: Hypothalamus is well-known for its role in homeostasis (self-regulation including, but not limited to, temperature/energy) and also reactions / stimuli ...
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Is there neuroanatomical evidence for Groves & Thompson dual-process theory of habituation and sensitization?

The introductory textbook of Domjean mentions some empirical evidence for Groves & Thompson (1970) dual-process theory of habituation and sensitization. Presented a dual-process theory of ...
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50 views

Cognitive Effects of studying for the LSAT?

Is this study/article scientifically valid. http://news.berkeley.edu/2012/08/22/intense-prep-for-law-school-admissions-test-alters-brain-structure/
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What happens in the brain that allows access to a previous unavailable memory?

What happens in the brain that allows you access to a memory previous unavailable? For example I forgot the name of someone I've known for years. Two weeks later, without notice, "Diana" popped up. ...
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107 views

How addictive is Heroine?

I keep hearing that "*Heroine is so addictive the very first dose is enough to get you hooked on it*". Personally, I have a hard time believing any substance could do that to you. But I could believe ...
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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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Kinetic synesthesia evoked by abstract thoughts?

Can the experience of movement when mentally visualizing the network/structure of the code of a complex application, and the information that flows through the network as a programmer be a kind of ...
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Why does the graph have a logarithmic shape? That is, why does the increase rate in %/hr decrease over time?

The graph attached has a logarithmic line, but I can't figure out why. Does anyone have any potential justifications with respect to neuroscience? Thanks!
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How convincing is the evidence that LTP underlies memory formation?

(Yeah, I'm aware this question probably is rather close to being opinion based, but I'll ask anyway.) A (widely cited) 2004 review by Lynch was somewhat reserved on the topic, noting that some ...
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1answer
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Why do we see shadows in the following black-and-white optical illusion?

How does neuroscience explain the following optical illusion? Look at tiles. You will see spots of shadow near all corners. The shadow will be missing from some corners very near the center of your ...
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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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Why are there still left handed people?

About 90% of all people are right handed. About 10% of people are left handed. So why has left handedness persisted for so long throughout human evolution? Why does it stick around? What are the best ...
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1answer
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Are emotions local or purely global? Can there be two inconsistent emotions in different parts of the brain?

I am NOT asking whether people can experience two inconsistent emotions "at the same time". Clearly this can happen, e.g. when people have "mixed feelings" about something. What I'm interested in, is ...
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1answer
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Why is the distribution of mean firing rates assumed to be Gaussian?

I'm reading "Principles of Neural Information Theory" by James V Stone and in section 3.5 he says that the distribution of firing rates (of a single neuron) is generally assumed to be approximately ...
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2answers
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Converting human's memory into digital data

I am wondering whether converting someone's memory into digital data is possible or not. It may sound ridiculous. However, if chance is not 0 then what kind of studies might be used? What kind of ...
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1answer
44 views

Could we develop a notion of conceivability that would allow us to imagine impossible/inconsistent/illogical things?

There are things that we cannot imagine because they are impossible (like a solution to Russell's set theory, since it is impossible to reach that solution because it is illogical.) Some months ago, ...
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1answer
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How is the brain cooled?

I remember[ed] reading a story on a brain-inspired integrated mechanism for energy-delivery and cooling in (experimental) new computer chips: The human brain packs phenomenal computing power into a ...
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1answer
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Performance of a damaged brain

I have heard stories/reports that if a certain part of the brain (taking care of certain functions) is damaged other parts take over the function of the damaged part. Intuitively this could mean 2 ...
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1answer
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Why is a cross-dominant/ambidextrous brain more susceptible to mental illness?

The left and right hemispheres of the brain are connected by a bundle of fibers called the corpus callosum. Ambidextrous, left handers and cross-dominant people have symmetrical brains as opposed to ...
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What might be the daily experience of someone who does not have an orientation association area?

The orientation association area gives us a sense of our body in time and space. What would it be like without this part of the brain assuming everything else works normally? Can the brain separate ...
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Are facial muscles activated in verbal thought? [duplicate]

In this video, Dr Russel Barkley states the following: I can put electrodes all over your face and I can ask you to cite your Canadian pledge of allegiance in your mind. You still move your face. ...
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Human vision detection of faint blinking or moving point of light, guidelines for sensitivity versus frequency

This question is in the neurology/neuroscience rather than the psychology aspect of this site. I'd like to check the limits of visibility of a (presumably green) LED at large (kilometer) distance, ...
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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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1answer
238 views

What would happen to the human brain after running out of memory?

According to this answer humans have enough memory to store 300 years of TV shows. However, of course, it is disputable, as storage system would be completely different from storing TV shows (videos) ...
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1answer
507 views

What is the name of the bias that associate a thing as good because it has a relation to another good thing?

A customer buys X from "brand A" and has positive experience with it. "Brand A" also sells Y. Now the customer things it is good to buy Y because of his/her positive experience with buying X from ...
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2answers
93 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
77 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 ...
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1answer
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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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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.
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1answer
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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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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
114 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. ...
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1answer
374 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
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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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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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171 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
95 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.
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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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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 ...
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1answer
81 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 (...
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1answer
72 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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2answers
178 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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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
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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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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?