Questions tagged [neuroscience]

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

Filter by
Sorted by
Tagged with
1
vote
1answer
37 views

How are ocular dominance columns monocular despite binocular complex cells?

Orientation columns in the primary visual cortex are known to have (mostly) simple cells in layers 4 and 6, and (mostly) complex cells in layers 2,3 and 5. Orientation columns spanning an entire range ...
1
vote
1answer
99 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/
1
vote
1answer
410 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 ...
1
vote
1answer
12k views

What is input resistance and how to interpret its values?

For example, this site gives a distribution of values of the input resistance of various cells. The values are in MOhms. The definition says that "input resistance measured at steady-state voltage ...
1
vote
1answer
55 views

What is meant by “serotonergic” in “serotonergic psychedelics”

"Serotonergic psychedelics" is apparently a sub-class of psychedelics. Now, I believed that the pharmacological definition of psychedelics is that they all agonise 5HT receptors, especially ...
1
vote
1answer
58 views

How to determine nerve conduction velocity?

Can anyone suggest good sources or papers to understand about experimental setup and procedure for measuring nerve conduction velocity for various types of neurons? I wish to learn how such ...
1
vote
2answers
57 views

Memory game - short or long-term memory?

There is a game where "a suitcase is packed" and you have to remember all the words or objects that are packed into the suitcase. Each participant adds a new word to the "chain of words&...
1
vote
1answer
46 views

How are neurotransmitter receptors discovered?

Many neurotransmitter receptors are known, for example 5-HT2a, Mu, NMDA, and so on. How have these receptors been discovered?
1
vote
1answer
54 views

Why can't we do the things we know instantaneously?

In the following video eventhough people know that when handlebar of the bicycle is turned left the wheel of that bicycle is turned towards right and vice versa, they can't ride that new bicycle ...
1
vote
1answer
34 views

How do we know brain Is not involved in knee reflex?

How do we know that compressing the knee generates a feedback signal that makes the leg extend even before the signal reach the brain?
1
vote
1answer
66 views

Find volume of lesion mask

I have drawn a lesion mask using FSLeyes on a T1-weighted image for MS patients. Is there tool to get the lesion volume from the mask?
1
vote
1answer
286 views

Unilateral vision in split brain subjects

I am just beginning to learn psychology and came across concept of split brain. I was wondering if a person has only left eye working and has their corpus callosum cut, would they be effectively blind ...
1
vote
1answer
31 views

Would non-neural physiological insights be considered to be in the field of neuroscience?

For example, would e.g. SCR (skin conductance response) or hormone level be considered to be "neuroscientific measures" according to general definition of neuroscience?
1
vote
1answer
75 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 ...
1
vote
1answer
126 views

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 ...
1
vote
1answer
52 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 ...
1
vote
2answers
499 views

Why do people like to listen to sad songs?

Why do people like to listen to sad songs? Sadness is not a positive feeling, so people should avoid it, right? Listening to sad songs is like inflicting some pain to yourself just for pleasure. Did ...
1
vote
1answer
67 views

Does increased neural complexity slows down brain operation speeds?

If a sensory input is perceived, one needs to process this input from the sensory end organ (sensation) up to the brain (perception). Does a more more complex neural network consume more time than a ...
1
vote
1answer
45 views

Do gating mechanisms in the neocortex have individual degrees for all gated connections?

For example, the upward connection between layers in the neocortex flows through the thalamus which is assumed to have a gating function. I wonder whether there is a single value per gate, ...
1
vote
1answer
188 views

Is the heart conscious?

I have read that our heart can think like our brain. Of course it doesn't have complete functionality of brain but it has its own consciousness. Is it true?
1
vote
1answer
94 views

Parasite that takes over cognitive functions [closed]

I am testing an idea for a book. The backbone of the story is that there exists a parasite that can enter the brain of a creature and take over its cognitive functions. I imagine that it could wire ...
1
vote
1answer
129 views

Brain after (electrical) blackout

I was wondering what happens if we lose all electrical impulses in our nervous system for a minimum amount of time. So first of all it is obvious that we will break together, as we are dead while we ...
1
vote
1answer
70 views

Law and its formula that says: more time organism working the slower (or less precise) the movements

What is the name of the law and the equation that says that "the more time an organism is working the slower (or less precise) its movements." ? I read once that there is a law in behavioral science ...
1
vote
1answer
363 views

How do thoughts work at the neuron level?

How does thought work at the biological level of individual neurons? I believe there are many neurons which are active in the brain at the same time. For example, our senses are constantly taking in ...
1
vote
1answer
28 views

How close are fluorescent dyes to individual neurons in two photon microscopy?

Considering the minute electrical excitation produced by neural cells needed to excite fluorescent dyes, how close are they to these cells, considering that being too close will disrupt cell processes....
1
vote
1answer
21 views

What is the actual interpretation of the “correlation of a connection between neurons”?

I am student of Mathematics who is currently studying the utility of Algebraic Topology in the field of Neuroscience. In the paper I am reading (Reimann et al 2017) the authors explain that for ...
1
vote
1answer
78 views

Neural oscillations and activity patterns

Both single neurons and groups of neurons can generate oscillatory activity spontaneously. In addition, they may show oscillatory responses to perceptual input or motor output. Even memory and ...
1
vote
1answer
31 views

How to handle single trial ERP (P300)

I am learning to work with EEG data in young and elderly subjects. The goal is to find differences in P300 (amplitude & latency) between both age groups during learning. I analyzed the data based ...
1
vote
1answer
69 views

What are the factors that make the membrane more permeable to Potassium ions than Sodium or Chloride (or any other ions)?

I'm just into my first week of Neuroscience and reading about membrane/action potential. It is my understanding that when the membrane potential changes, it is more K+ ions move across the membrane ...
1
vote
1answer
49 views

What is the neurological basis for the association between Bipolar type 2 and autism spectrum disorder (ASD)?

Bipolar disorder type 2 and autism spectrum disorder (ASD) is regularly seen together. What is the neurological explanation for this?
1
vote
1answer
103 views

Brain network datasets

I am a student from Computer Science and interested in graph theory. I was looking for datasets for brain networks (structural and functional) for graph analysis. I have found brain image datasets ...
1
vote
1answer
46 views

How action potential is generated while dreaming

I would like to know what generates the action potential in the brain areas that is relevant to dreaming, since our sensory nervous systems don't work (or do they?). What else can generate the action ...
1
vote
1answer
38 views

Where to find information regarding the effect of ion concentration in the brain on behaviour?

Hopefully this is the right area. but for some background, for a school project I'm currently trying to design a medically accurate zombie. I have half a semesters knowledge of basic physiology, and ...
1
vote
1answer
79 views

Which characteristics of neural activity patterns underlie conscious experience?

Which specific characteristics of neural activity patterns are unique for the cortex and neocortex as the presumed "seat of consciousness" and can only be observed there? Activity patterns having ...
1
vote
1answer
40 views

Functional vs. synaptic connectivity

I used to believe that connectivity is nothing but synaptic connectivity and thus a long-term concept: synapses grow and synaptic strengths change on rather large time scales. But recently I found ...
1
vote
1answer
123 views

what causes an action potential to propagate exactly and why should it propagate?

Hello I am taking a neurophysiology course and learned about the action potential and that it propagates in one direction from axon hillock down along the axon. I understand that action potential is ...
1
vote
1answer
79 views

What information does the connectome actually contain?

I am not a brain scientist but the following question seems reasonable to me. Prof. Sebastian Seung has given a TED talk named "I Am My Connectome". If I understand correctly, connectome is ...
1
vote
1answer
77 views

Are there ways to accelerate the recovery from depression via novel pharmacological antidepressants?

Are there any scientists making substantial progress in the development of far more effective antidepressants? Are there any groups of people interested in developing antidepressants based on genetic ...
1
vote
1answer
85 views

Is the visual cortex of a newborn baby immediately capable of object detection or is this skill learned over time, and if so, how?

Is the visual cortex of newborn babies right off the bat capable of making sense of raw visual data, for instance, converting the constant stream of raw RGB images perceived by the eyes into a ...
1
vote
1answer
17 views

Typical and minimum voxel sizes for various field strength MRI machines?

Hoping somebody can give me some real world numbers on the typical capabilities of 3T and 7T MRI machines in terms of there minimum voxel size (specifically in relation to there use in fMRI studies if ...
1
vote
1answer
64 views

How does modulation of the activity of an afferent neuron lead to increase in MEP's?

I was confused reading this: Another example has been described with the primary motor cortex, where the afferent axonal synaptic input (Figure 1) can be facilitated by anodal tDCS (Rahman et ...
1
vote
1answer
20 views

Nociceptor (possible threat signal)

I've read this on Wikipedia: A nociceptor is a sensory neuron that responds to damaging or potentially damaging stimuli by sending “possible threat” signals to the spinal cord and the brain. ...
1
vote
1answer
131 views

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 ...
1
vote
1answer
50 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, ...
1
vote
1answer
145 views

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, ...
1
vote
1answer
60 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, ...
1
vote
1answer
30 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 ...
1
vote
1answer
246 views

Which possible methods can be used to determine if a certain part of the brain is active?

The question goes back to this tweet: Julia‏ @JuliaHass I just learned that elephants think humans are cute the way humans think puppies are cute (the same part of the brain lights up when they see ...
1
vote
1answer
76 views

People with dead nerves cell, can they feel pain/emotions?

Exactly what the title said, can they feel love/sad/hurt/disgust/fear/etc, emotions, after their neurons are dead? Also are there specific nerves for each emotion that transmits emotion? So let's say ...
1
vote
1answer
86 views

Searching for real biological neuron firing data [numeric] [closed]

I am searching for real neuron firing data, so I can look at each neuron for fire timing (frequency) and incoming/outgoing signal-strength. I already found short youtube videos of real neuron firing ...

1
13 14
15
16 17
19