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Questions tagged [neuroscience]

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

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A project of mine on which I could use help: two theorems on consciousness expansion with brain organoid implantation [on hold]

For a post presentation, I composed two theorems on how the brain could respond to neural mass addition due to minibrain implantation. I could use some feedback, an expert opinion on whether or not I ...
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1answer
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Can signals from the prefrontal cortex alone trigger a readiness potential in the pre-supplementary motor area?

Background In Haggard, Patrick. "Human volition: towards a neuroscience of will." Nature Reviews Neuroscience 9.12 (2008): 934., the author states in the caption of Figure 1 (pg. 4): The ...
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2answers
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Clear definition of ego

Is there a clear definition of the ego which is accepted by the neuroscientific community? I have seen a previous post (What do id, ego and super-ego exactly mean?) but this definition is for the ...
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35 views

Thinking of Committing Suicide because of mental illness [on hold]

It first time to write here, but I am in a desperate need for scientific guidance since I have tried psychoanalysis, but I did not help a lot. Long story short, I am at the end of the twenties, I was ...
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1answer
360 views

Why could too much BDNF be detrimental in terms of depression and memory?

I am interested in looking at the effects of too much BDNF and other proteins such as repressor element one silencing transcription factor (REST). Most research suggest that elevated levels are ...
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2answers
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Simulating Hudgkin Huxley neural network

I'm starting work on a computational neuroscience project where I want to create my own model of a spiking Hodgkin-Huxley neuron and connect many instances (about 400) of this model through synapses. ...
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Is anyone aware of up-to-date neuroscientific research on talents / aptitudes? [on hold]

I’m writing a paper and am looking for research into aptitudes / talents / natural abilities (as opposed to learned skills or ‘intelligence’). Specifically, how/whether these connect to job ...
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1answer
45 views

What would happen if we saw an impossible thing? Would we see it? [on hold]

Consider there is a multiverse where all kinds of impossible worlds and things occur. Where illogical/logically impossible things exist. Where there are even, somehow, things that are logically ...
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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 ...
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0answers
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Which are some comprehensive but upper-intermediate textbooks on the neurochemistry of cognitive function?

I am studying medicine to be a radiation oncologist. Nonetheless I am also interested in cognitive function as I want to specialize on the Brain. I need a few textbooks not too advanced that a student ...
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6answers
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Why would the brain flip the images perceived by your eyes?

The following is a common scientific statement, which you don't have to google long for to find: The eye views images upside-down in the manner of a camera lens, but our brains reinterpret this ...
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4answers
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Difference between Psychology & Neuroscience in lay man terms?

I am electronics engineer by profession But i am confused in difference between Psychology & Neuroscience? Please explain in lay man terms?
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Neuroscience - Spikeing due to conductance of Sodium and Potassium

I'm currently working on a project concerning the HH (Hodgkin-Huxley) model. I'm using nest to simulate action potentials. My problem is that I'm supposed to set the conductances as to increase the ...
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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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Is there any empirical support to “chemical imbalance theory” for mental illness?

Has it been proved by measurement of chemicals in the brain that psychiatric disorders have either their origin or continuance due to chemical imbalance in the brain? I saw the documentary Diagnostic &...
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1answer
42 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 ...
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1answer
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What structures in the brain are called upon to strengthen coupling between bilateral movements?

It is very difficult for the normally-coordinated person to be able to pat his/her head and rub his/her stomach at the same time (or pick a similar activity). It seems to be possible to maintain the ...
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Best implementation of large scale neural network simulations

I'm doing research in computational neuroscience and I want to run simulations of large neural networks with complex dynamics. Specifically, using the Hodgkin-Huxley model on ~400 neurons with 30,000 ...
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2answers
224 views

Predictive Experiments on Neuroscience of Free Will

It seems to be very interesting that we can use modern neuroscience and cognitive science research to inform us about the ages-old question of free-will vs. determinism. The standard experiment was ...
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1answer
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Voltage Clamp Method

I don't understand some points of the voltage clamp method. In the resting state, Command voltage and membrane potential are both -65mv. If the command voltage increases to 0mv, current is injected ...
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2answers
3k views

How many synapses in the average human brain?

Knowing there are 100,000,000,000 neurons in an average human brain, and 7,000 dendrites in each neuron, and neurons are connected to each other by dendrites and axon terminals, how many synapses are ...
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1answer
48 views

How do we know what colors animals perceive?

Humans have three kinds of photoreceptors corresponding to different wavelength-spectra: If say photons with wavelengths of around 530 nanometers hit the human retina, this would lead to the ...
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What are the neuroscience research findings on the importance of breaks in cognitive function and specifically learning?

When I say breaks I mean breaks between periods of the same course, breaks between two distinct courses, single days of, weekends, couple days of, few days of, longer periods of holidays of duration ...
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If someone becomes a split-brain patient, which side will “maintain” the continuity in their consciousness?

The brain injury might apparently produce two "independent" consciousnesses, and I'm wondering where the original person's "consciousness" would "transfer". We had a debate on this over at Reddit ...
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How action potentials work

At this point, I have a fairly solid grasp on the process of an action potential from some of my own reading. However, I fail to see how sending excitatory signals to a specific neuron can encode any ...
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2answers
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Cerebellum question

Sorry if this sounds at all like pretentious armchair theorizing(it basically is), but I have a question which I can't really figure out how to search. So, given the resemblance of the cerebellum to ...
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free will studies in long term decisoin making [duplicate]

this wikidepia article has a list of experiments and discussion around free will in neuroscience. One thing it notes is that there aren't studies focused on long term decision making in relation to ...
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1answer
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How can different ion channels of the same type have different cell responses?

The NMDA receptor is an ion channel and contributes to synaptic plasticity and memory. It is said that calcium ion flux through the receptor is critical for this mechanism. However, there are other ...
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3answers
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What are current neuronal explanations and models of 'consciousness'?

I would like to understand more about consciousness from a neuroscientific perspective. I have a limited understanding of it in the philosophical/psychological sense through lectures. Although it is ...
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1answer
51 views

What is the exact chemical reaction that gives consciousness? [closed]

Something very bizarre is consciousness, it is our ability to virtually feel things such as emotions and ability to control our thoughts and physical movement. We can also imagine a non-conscious ...
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1answer
87 views

Why can't human thoughts be stored in metals?

As metals are good conductors of electricity and they can be charged by the electrical activity of thoughts, why can't human thoughts be stored in metals? Why thoughts cannot be stored in the form of ...
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1answer
101 views

Are neural adaptation and drug tolerance to psychoactive drugs related?

Neural adaptation is "...a change over time in the responsiveness of the sensory system to a constant stimulus". The example given is placing your hand on the surface of a table. Eventually, you no ...
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1answer
28 views

How fast can stimuli be administered for evoked potentials?

I'm looking for a reference about the ability for sensory stimuli to generate separate evoked potentials in the brain. What is the maximum repetition rate for sensory evoked potentials?
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1answer
44 views

Is the Thatcher Face Illusion only limited to face recognition?

The so called Thatcher-Illusion has been documented not only on humans but also in some monkeys. However I can't find literature clearing out if this effect only applies to face-recognition. What ...
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1answer
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How can someone asleep recognize a very brief sound?

I have a snoring girlfriend. To interrupt her snoring, I make a sound similar to the very brief sound gas makes when opening a soda can or bottle (had a snoring brother, I know this technique works ...
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Is there a Big Five personality assessment under an open-commercial license?

I am currently working on a project with a few students. It's an app that can test the big 5 personality test. The problem is, I am having trouble finding one that is under an open license and that we ...
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Have there been any right-hemisphere-dominant split-brain-patients?

Do any case studies of right-hemisphere dominant individuals who have undergone a severance of the corpus callosum exist? Thanks.
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1answer
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Integrated Information Theory - If correct could humans create artificial consciousness?

First off please keep in mind I am self-learning and am learning about this for fun, I have no end goal. I'm trying to make predictions about what I am learning implies or means, so I can ask better ...
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Using neuroscience to study a new organism [closed]

Consider a situation where you discover a new species and of organism. Using research methods of neuroscience or otherwise, how would you go about analyzing the nervous system and the brain of this ...
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3answers
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Why does neuroplasticity decrease in adults?

Although adult brains are malleable and even undergo limited neuorgenesis, the extent of the neuroplasticiy is much lower than in children. This is most obvious in language acquisition, and recovery ...
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1answer
159 views

What's the difference between the neuroendocrine system vs endocrine system?

No one in the Biology site seems to be answering this, so I thought I'd post it here as a last resort. I would really appreciate if you guys can take a look at it. This is what I have understood so ...
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Which are the arguments for asserting mental life/consciouness happen only in the cerebral cortex?

I've read many articles / researchs and they are hard to follow. Several times concepts are hard to understand, it would seem certain concepts such as "cognition" are fuzzy terms and they become part ...
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3answers
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What is the “static” in human vision called?

Sort of like a cheap digital Camera, the human eye has certain feedback that's perceived but doesn't actually exist in the real world; a little layer of Static that's especially noticeable in pitch ...
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1answer
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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 ...
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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 ...
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Is there any research on whether primates with sign language use same fronto-temporal language networks observed in humans?

I have been reading up on research carried out at Ev Fedorenko's MIT Language Lab on localising the high-level language processing regions in humans using fMRI and was wondering if any comparative ...
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1answer
55 views

Can the brain be enhanced by adding more neurons?

I was wondering of ways to enhance the brain. Couldn't we add a sort of substance to improve the brain? Will it somehow adapt? The brain should 'wire up' the new substance to the existing one. As ...
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1answer
54 views

Bottom up thinking - what is it?

Mlodinow has book Elastic thinking, which sounds interesting and where he mentions bottom up processes/thinking; which he equates with elastic thinking. I have watched numerous videos about it, and ...
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1answer
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Can a device create/guide neuron connections between them?

Is there a device of some sort that could promote/guide/create exact connections between neurons? I wish there was a device that could get me PhD by just wearing it for a few months.
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Do neurons involved in reflex movements process information or they just transmit a signal?

According to Reflex A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. A reflex is made possible by neural pathways called reflex arcs which ...