Questions tagged [neuroscience]

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

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2
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1answer
31 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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52 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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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
104 views

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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70 views

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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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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28 views

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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1answer
524 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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1answer
14 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 ...
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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
62 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
58 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
194 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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27 views

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 ...
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1answer
31 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 ...
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1answer
29 views

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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when is default mode active

AFAIK default mode is important for our well being since as I am concerned one of its functions is to make sense of things we learned, experienced, etc. Here is says default mode is active when ...
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1answer
98 views

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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1answer
31 views

Differences in reaction time on visual tasks with and without binocular disparity ques?

Have there been any studies done that test the reaction time to vision processing tasks with and without the benefit of binocular disparities? I have been wondering how much depth information (such as ...
2
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1answer
42 views

Is there any evidence for or against the existence of neurons that encode surface slant in vision?

In the way orientation columns display selectivity for various edge orientations projected on the retina which is then repeated at various angles in a localised region of the cortex. I am wondering ...
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44 views

Lovheim cube research

Is there any psychology research into the validity of the Lovheim cube of emotion? Aside from the original paper (Lovheim, 2012) and papers from computer sciences (the cube is being used for ...
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517 views

How do we know human brain development stops around age 25?

I've heard this stated as a fact more times than I can keep track of, but I haven't been able to find papers that actually demonstrate this. This seems to be the most cited paper on the topic, but it ...
4
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1answer
47 views

What exactly are the X and the Y axis of a brainwave?

I can't seem to wrap my head around how a bunch of organic transistors (neurons) could possibly produce a wave? What exactly is a brain wave? If you graph a brain wave what exactly would your X and Y ...
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1answer
135 views

Is is possible to “delete” a memory permanently?

If cognitive memory is compared to computer memory, then is it possible to purposefully and permanently forget a specific memory, using known technologies and methodologies?
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Reference request: Parkinson's disease book [closed]

I am about start a project on computational modelling of basal ganglia in the context of motor problems in Parkinson's disease. My background is mostly on computational side (and some neuroscience too)...
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Since we know the 5ht2a receptor impacts learning efficiency why has stimulating it not been tried for alleviating learning disabilities?

If you go on wikipedia or do a search on Google you can quickly find a bunch of articles on the importance of serotonin for impacting the efficacy of learning. Experiments have been run in mice for ...
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1answer
53 views

If a specific neuron is present in my brain, will it be present in another person's brain?

For example if I have a neuron cell that fires when I say the letter 'A' and is located at a specific place in my brain, will another person have that cell at the exact same place and will it fire ...
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Looking for text books comparing animal and human brain

Are there any papers or textbooks comparing animal nervous system and human's ? I'm most interested in "higher" animals such as mammals(Chimps, dogs etc.)
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How are the brains of mathematicians different from typical people?

As a biomedical sciences student who also minors in Mathematics, I am often amazed by some of my classmates who really appear to be born for Mathematics (with regards to both their abilities and ...
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1answer
52 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 ...
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1answer
49 views

Are there animals with only excitatory neurons?

Are there animals with only excitatory neurons? I am not sure it is possible. Also, maybe excitation/inhibition can become relative? I however will be happy to read your opinion.. For example, are ...
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1answer
83 views

What is the difference between principal neurons and pyramidal cells?

I am reading Kandel's "Principals of Neural Sciences". There the book sometimes refers to excitatory neurons as principal cells, and sometimes as pyramidal cells. Can anyone tell me the difference? ...
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Averaging a linear or nonlinear function treatment

In a hypothetical PET study, my sample consists of a clinical population which exhibit brain hypermetabolism. I divide my sample into two homogenous groups. One receives a treatment whereas the other ...
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1answer
53 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 ...
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2answers
179 views

If the optic nerve transmits to both hemispheres, how do split-brain experiments work?

From what I understand, the optic nerve of each eye transmits information to both hemispheres of the brain. This is unlike other sensory and motor information, where (for example) the right hand is ...
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1answer
30 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?
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1answer
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Are there rule of thumb regarding sample size when neuroscientific measurements are used?

According to this paper, 10-25 subjects are enough for an fMRI study. However, regarding EEG, it only mentioned in this paper that some "authors concluded that the relatively small sample sizes (...
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1answer
92 views

What is the human brain made of?

I read an article that stated that the human brain contains 60% fat. Is this fatty tissue structural building material? Or does it just serve as an energy source for the mitochondria? Since our body ...
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1answer
34 views

Why some papers suggest that losses and gains are coded by the same mechanism while other suggest that distinct circuits anticipate gain and loss?

In this paper, it states that "Consistent with neuroimaging evidence suggesting that distinct circuits anticipate gain and loss,..." However in this paper, it states "..., these results are consistent ...
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1answer
18 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. ...
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1answer
93 views

Can logic be traced back to neurons?

In our everyday experience, and in both math and philosophy particularly, there exist some binary order in the sense that some statements can be classified as true or false. Does this have a ...
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1answer
40 views

Reading material for graduate neuroscience program

I have just finished reading 'Neuroscience: Exploring the Brain' 3rd Edition, Bear et al. I am also planning on pursuing a neuroscience degree beginning fall 2019 and was wondering what other reading ...
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Can a CT scan have advserse cognitive effects on the brain? [closed]

If the normal Xrays scans, despite the low amount of radiation (equivalent to a few hours of background radiation, can be sufficient to cause a burning sensation, then I wonder if the much higher dose ...
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1answer
112 views

Is Paul's Churchland claim about qualia supported by science?

Knowledge argument: Mary is a brilliant scientist who is, for whatever reason, forced to investigate the world from a black and white room via a black and white television monitor. She specializes ...
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1answer
37 views

What does “they tend within and between classes” mean in 'The Irreducible Mind'?

I am a philosophy student but I'm also interested in philosophy of mind, a field that overlaps issues in psychology and neuroscience these days. This passage is taken from a similar multidisciplinary ...
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1answer
78 views

Body temperature increasing when trying to solve difficult problems

[ I am unsure if this is the correct site to ask this question ] I am a HS student, currently studying IT and personally I focus on the field of software (programming) and of course where there is ...
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1answer
97 views

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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161 views

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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2answers
184 views

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
94 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 ...