Questions tagged [neuroscience]

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

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44 views

Comorbidity of Neurodevelopmental Disorders between them and Obsessive Compulsive Disorder and Obsessive Compulsive Personality Disorder

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3416662/ OCD being an anxiety disorder and OCPD being a personality disorder it is entirely possible that these two can be present on the same patient. ...
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Good neuroscience research blogs

In the field of AI research there are really good research blogs that regularly analyse methods and review papers. Examples that come to mind are: BAIR blog: The Berkeley AI Research blog Distill: an ...
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Myelin and Myelin Sheath

https://medlineplus.gov/ency/article/002261.htm Why is Myelin used as a term to mean the Myelin Sheath as opposed to the proper term? It is apparent to me that Myelin is the substance itself ...
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Neurodevelopmental Disorders, Cognitive Function and Teaching [on hold]

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130248/ Could neurodevelopmental disorders particularly autism spectrum disorders without concomitant cognitive impairment and ADH/D, mixed type, ...
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Trust after the first 200 milliseconds

In the first 200 ms of meeting someone our implicit / System 1 brain makes a number of inferences (based on age, gender, race, voice, smell among others) to determine whether we ‘like’ the other ...
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1answer
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Understanding the 'Wiring Catastrophe'

Introduction: In 'Wiring optimization in the brain'(2000), Dmitri Chklovskii and Charles Stevens analyse the dependence of the complexity of cortical circuits on the number of synapses per neuron ...
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1answer
58 views

How can higher concepts get unrolled with upward and feedback connections differing?

In the neocortex, input patterns are compressed hierarchically. Sensory inputs in the lower levels are combined by higher levels to form abstract concepts. However, there are even more feedback ...
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25 views

How neurons and mind can be related? [duplicate]

As we know neurons are matter . But mind is not matter .You can see a brain but can't see a mind . Why from outside brain is full neurons , but when it's inside you , it starts to create mind, visions,...
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The same neuron sometimes released different neurotransmitters, so how does this affect our interpretation of computational models?

Most studies I see compare firing rate with some observed variable (stimuli or behavior). However, they treat all spikes the same. But neurons sometimes release different neurotransmitters depending ...
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32 views

Why do solutions to problems feel simple (or obvious) once we are given them?

I was watching a video about one of the hardest maths problems even examined in the IMO (International Math Olympiad). And once I was walked through the solution, it seemed so obvious to me, as I'm ...
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William James “Principles of Psychology” and Brain Plasticity

I am reading William James' "Principles of Psychology". It is clear in his research that he was acutely aware of brain plasticity and the limited capacity for a precise "schema" (ie. static brain map)...
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Neurological explanation for differences in what motivates runners?

I have noticed differences between how my friends and I are motivated with regards to exercise, and would like to better understand what is influencing this difference psychologically. Personally, ...
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How to filter noise in EEG data

I am a computer science student and I'm doing something for a psychology professor. We have EEG data from an experiment where a person was shown 140 images for 2 seconds each. We placed 64 electrodes ...
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Bipolar Disorder Patient data

Can someone provide me with an electrocardiogram signal of a bipolar patient? I'd like to have a trace obtained in an intermittent period, i.e., when the patient is not experiencing a depressed or ...
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What are the average dimensions of human Purkinje cells in the cerebellum?

I'm looking for the dimensions, specifically the dendritic tree of the human Purkinje cells. All classical papers such as Eccles, Andersen, Palay Chan-Palay mention dimensions of cat, mouse, rat or ...
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1answer
15 views

How can we know which types of brainwaves is dominated at particular state?

I am a freshman at Neuroscience. As I learned there are 5 types of brainwaves: Gamma, Beta, Alpha, Theta and Delta, each types have a different frequency range. So my question is when onserving a ...
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Is there a neurological reason why women do not occupy top positions in the chess ranking?

I want to turn arround this question posted on chess exchange where sociological arguments are given to explain why only two of the world's top 100 chess players are women. Are there neurological ...
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1answer
68 views

How much we should trust our brain

Our brain is trained from culture and environment that we're raised in. So we don't control what we're learning until we get to teenage. But by that time our behaviour is already been shaped. This ...
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1answer
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Is the hippocampus responsible for storing or creating memories?

I've heard that severe damage to the hippocampus results in the inability to form new memories but still remember old ones. Am I mistaking something? Is the hippocampus responsible for storing ...
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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 ...
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Are personality characteristics correlated with certain underlying features of the facial expressions of a person?

For instance is it possible to determine with some degree of accuracy if a person is ranks high in openness to new ideas by some photos of the person?
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1answer
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Anomalous activation of temporal lobes

The result of wakeful EEG shows persistent activation of temporal lobes - high level of delta and theta waves in the left temporal lobe (3 on the scale from -3 to 3) and slightly lower in the right ...
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How common is it to include unmedicated patients in first episode psychosis (or any type of psychosis) studies?

Is anyone familiar with this open access study? Radua, J., Borgwardt, S., Crescini, A., Mataix-Cols, D., Meyer-Lindenberg, A., McGuire, P. K., & Fusar-Poli, P. (2012). Multimodal meta-analysis of ...
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1answer
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Do psychiatrists and researchers themselves don't have an idea how antidepressants work?

This question may be seen as an extension of my previous question, here. I was talking to a person online where s/he mentioned that psychiatrists themselves don't have an idea as to how SSRIs work. ...
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What's the pathfinding algorithm the human brain uses?

I was trying to build a software simulation of people using different pathways in a city to get from point A to point B. I do know the Dijkstra's algorithm and the A* algorithm, but what they do is to ...
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Has there been any neuroscientific study of polydactyly?

I have been reading about polydactyly and found that surgery is only necessary in certain cases. It depends on way the extra digit on the hand or foot is attached. For example, central polydactyly (...
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1answer
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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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What is a sensorimotor connection in plain English?

I have googled, but haven't found any definition simple enough that I understand. I would appreciate it if you could give me an example as well! Thanks, Jack
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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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Supposed 'brain training' [duplicate]

The term brain training is nothing new, however how effective is the 'N-back' method, does this work scientifically speaking? There are mixed reviews on this: one claiming it works https://www....
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1answer
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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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2answers
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Are the images in our heads physical?

I can think of a banana in my mind, and I can see it, it's there, but it's not really there at the same time. It doesn't feel physical, but for me to be able to see it, it must be physical, right? Are ...
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1answer
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Is doubting a claim more taxing in terms of energy spent by the brain?

I was at a conference some time ago in a university near my city, a Neurologist was part of the various talks held there, and in his words: "There is a, let's call it Neuro-Psychologic ...
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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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1answer
50 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 ...
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How to analyze EDA data collected from mindware?

How to pair event and skin conductance response of data from mindware? Does it need to downsampling? Thanks.
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107 views

What sources of randomness does the brain use for sampling?

As an applied mathematician, I have a growing interest in the mechanisms for uncertainty representation and computation in the human brain. In fact, I recently compiled a list of papers on this ...
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Are there any psychological studies of thirst following food that account for SFO-Nos1 activity?

Some studies up to 2015 surprising found that salty vs. non-salty food doesn't make much difference to thirst. E.g. a 2015 study found that: However, according to Prof. Leshem, despite our gut ...
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2answers
692 views

Why do we have so many wishes and desires?

Two years ago I started to learn (as self-education) evolution theory and neurobiology for to understand - who we are and where we came from? Now I see clearly that we are our brains, which are the ...
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Is there a structural difference between Nerve cells in the Somatic and Autonomic Nervous Systems

Do the actual nerve cells in the Somatic and Autonomic Nervous Systems have a different structure or chemical make up or are they the same thing just separate systems?
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1answer
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Assuming a neuron does not reach activation, what is the rate of repolarization in the absence of new stimulus?

How long does it take for a neuron to return to it's resting state, due to absence of further stimulus?
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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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1answer
102 views

Is there a mindfulness meditation technique that tends to produce gamma rhythms in the brain (and not just the alpha frequencies that are typical)?

This is a follow up to a paper (^) that was cited in a response to one of my past questions here. It was found that experienced Buddhist monks generate a substantial increase in gamma waves on demand ...
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1answer
50 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 ...
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1answer
114 views

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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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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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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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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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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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.