Questions tagged [neuroscience]

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

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To what degree are discussions and concepts within philosophy of mind relevant in the field of neuroscience?

Philosophy of mind is a branch of philosophy that deals with the nature of the mind and its relation to the body and the external world. The mind–body problem is a paradigmatic issue in philosophy of ...
Mark's user avatar
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Is there any type of neuron capable of modeling "nonlinear function" (e.g. trigonometric, instead of "linear" in traditional Neural Networks)?

Modern Deep Learning technologies such as Self Attention and RNN, kind of integrated higher-degree nonlinear functions fundamentally. e.g. $(w_{1_{branch1}}x_1 + w_{2_{branch1}}x_2) \cdot (w_{1_{...
Life-is-DLC's user avatar
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Research and theories related to the physical form of Cognitive Fallacies

Is there any research about what physically happens inside our brain anatomically and neurologically when we humans commit cognitive fallacies (especially those fallacies documented in the book of ...
Piinhuann Chew's user avatar
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Pyramidial vs Motor vs Interneurons

According to Wikipedia... Interneurons are neurons that connect to brain regions, i.e. not direct motor neurons or sensory neurons. And.. Approximately 20–30% of the neurons in the neocortex are ...
th2o's user avatar
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What is the role of mesolimbic dopamine in associative or reinforcement learning?

I was recently told about a Science paper that suggests the old model of association of cause with effect is incorrect. In this model, cue comes, reward occurs, cue comes again, prediction of reward ...
Malcolm Forbes's user avatar
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Encounters, interactions, and great losses

When you encounter someone and interact with someone, it forms a pattern in the brain (and the brain stores, stuff, in some way). When something goes missing, then something in your mind can't be ...
Joselin Jocklingson's user avatar
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Can neurons belong to multiple communities?

I've been reading a little about neural networks in the brain, such as this paper. Most models have a resolution parameter $γ$, and for each value of that parameter a network can be partitioned into ...
GregRos's user avatar
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Bias towards lower frequencies in toy EEG

I am currently working on a scientific experiment that involves the Star Wars Force Trainer II, a toy EEG from Neurosky. It has three dry metal electrodes; one active electrode on the forehead, and ...
gabe12345's user avatar
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What is the point of having two hemispheres if one works just as well?

Hemispherectomy is a surgical procedure employed to treat epilepsy where an entire hemisphere of the cortex is removed. Astonishingly, when it is performed on very young children, they are seemingly ...
Enrico's user avatar
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Calculating Intra-Assay Coefficient of Variance

I am using cortisol data for my master's thesis and I need to report inter-assay and intra-assay coefficient of variance [CV]. In my study, we collected vials of saliva at 5 different time points. The ...
Mona's user avatar
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How is the noise covariance matrix computed and why is it a good measure of sensor reliability?

When using minimum norm methods for source estimation (in the case of EEG), which is to say going from the signal at the recording sites on the scalp to the signals in source space, i.e. equivalent ...
David Cian's user avatar
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Are there any papers on the neurobiology/ neuroscience of hyper-industriousness?

I'm quite intrigued by this topic, and, unfortunately, I haven't been able to find any interesting papers on the subject...More specifically, I'd like to know more about the mechanisms that regulate ...
Belarusian's user avatar
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What is meant by increased vagal tone?

Smiling ,for example,can stimulate vagus nerve as written in the following quote: Whether it’s through mindfulness, paced breathing, sports, sex or simply smiling, increased vagal tone is important ...
Dheeraj Verma's user avatar
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Why do certain individuals struggle to memorize song lyrics?

Some people have a hard time memorizing song lyrics, even after repeated listening. What individual factors contribute to the difficulty in remembering song lyrics?
Pluto's user avatar
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Phases of Brain Development and Gender Identity

What stages of brain development are represented by sexual differentiation and linked to prenatal development of gender identity?
user33699's user avatar
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Averaging across electrodes in P300 to make a figure

I have a dataset in which we expect to evoke P300 peaks in an oddball setting. My part of the project considers building a machine learning model to classify whether a participant saw a relevant ...
Smamorti7's user avatar
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Does being rocked in a cradle or sleeping on a ship improve sleep quality in the same way?

As we all know, mothers tend to rock the child in a cradle or in their hands. Is there any research finding that supports the claim that rocked babies sleep better than ones only held still in their ...
LimeAndConconut's user avatar
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Main Breaktroughts in Neuroscience in the past decade [2014-2023]

I just finished an online introductory course on neurobiology, dated 2014. Given the fast pace of progress in research in science in the last decade, I wonder if any of the core principles known to ...
Rexcirus's user avatar
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What happens to your body when overcoming side effects of SSRIs?

When you start taking SSRIs your body experiences side effects like vomiting, headaches, diarrhea etc. Apparently these side effects go away after regular consumption. What happens inside your body to ...
Derk Hurk's user avatar
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1 answer
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The mechanism behind the ADHD?

Nowadays, is there any knowledge about the mechanism through ADHD act? Why the people which have ADHD manifest the symptoms related to the disorder? Is some type of malformation or the presence/...
Gabriel Marino's user avatar
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Gene Expression Database for Psychological Disorders

Is there a comprehensive database available online of gene expression across the brain taken from individuals with psychological conditions? Resources like the Allen Institute's Human Brain Map (link ...
Lambda's user avatar
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What decides which pathway-forming neurons relate to a given thought or behavior? [duplicate]

So I know pathways of neuron connections are what store or “activate” behaviors, memories, information, etc and relate to specific thoughts and other brain functions occurring, and that when we learn ...
inkwell87's user avatar
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Is the equilibrium potential of the leak current equal to the rest potential?

Correct me where/if I am wrong: At rest, ionic channels in a neuron are closed, except for leakage (like with CL- ions) for instance. So I'd assume that the equilibrium (or reversal) potential for CL- ...
Johncowk's user avatar
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Is there a complete overview and classification of all Probabilistic Neuronal Codes (PPC)?

I am trying to gather an explicit and complete overview of so-called Probabilistic Neuronal Codes (PPC). I have found various PPC models from literature, but have difficulties having them classified, ...
al-Hwarizmi's user avatar
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Roles of Brain Regions (neocortex and hippocampus) in Explicit (declarative) LTM

My question is what is the role of the hippocampus, neocortex and amygdala in the encoding, storage and retrieval of declarative (explicit) memory, specifically episodic and semantic I am sort of ...
charl2.718's user avatar
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Does the Nernst equilibrium in a neuron for a specific ion represent the potential voltage that would be needed to bring the net to 0?

I am learning about the Nernst equilibrium in a neuron (along with the Goldman equation), and while I understand certain concepts individually, I struggle to bring it all together. The Nernst ...
TheMatureNeuro's user avatar
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Tears help remove chemical imbalances caused by stress?

Crying is a natural response to grief and loss. I don't think anyone would deny that. Whether it is an important part of the grieving process is debatable according to some circles, though. Should you ...
Chris Rogers's user avatar
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Is it possible to completely describe a real object in terms of brain activity?

I've read that the way perception works in the brain, stimuli from the external world is converted into signals that travel through the brain until they reach regions of the brain that can "...
Chidi 's user avatar
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Cranial nerve ganglion, or Cranial nerve nucleus?

I have a question that I hope some of you may be able to clarify for me. I have been taught that dorsal root ganglia are analogous to cranial nerve ganglia except that dorsal root ganglion is located ...
TheMatureNeuro's user avatar
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1 answer
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Why is the same process responsible for both synaptic strengthening and excitotoxicity?

Here are two quotes from Wikipedia with their respective pages. Synaptic Plasticity "Two molecular mechanisms for synaptic plasticity involve the NMDA and AMPA glutamate receptors. Opening of ...
Pickle Rick's user avatar
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Sylvius 4 like software

Good afternoon, I was hoping if someone could suggest a software akin to Sylvius that is free to use. An open source program. Any and all suggestions are welcome.
TheMatureNeuro's user avatar
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Mesolimbic pathway

I am trying to gain a better understanding of the etymology of terms used in neuroscience as that helps me remember things. In this case I am trying to understand the phrase "mesolimbic pathway&...
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4 votes
1 answer
284 views

Why are there receptors inside neural cells?

Reading a recent article which argues on why psychedelic substances are more effective than the naturally occurring neurotransmitters in the brain: *Breakthrough study discovers that psychedelics ...
Evamentality's user avatar
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1 answer
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Network Architecture Diagram

I am trying to teach myself some computational neuroscience and am reading through the following textbook: https://www.oxcns.org/b6_text.html. I'm finding this diagram confusing in particular c). My ...
Gustavo's user avatar
2 votes
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Transplant patients experiencing changes in preferences to match their donors

Similar to Where exactly do Emotions and Feelings arise in the human body?, I have been hearing of a phenomenon where transplant patients have been experiencing changes in preferences to match their ...
Chris Rogers's user avatar
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Possible explanation for patterns of dementia progression?

(I'm asking this question as a lay-person with respect to neurobiology, so apologies if it lacks rigour.) Dementia progression is different for each individual, but it seems like there are some ...
Stidgeon's user avatar
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Literature reviews on nerve conduction velocity?

The Wikipedia article for nerve conduction velocity is frustrating because it lacks citations. What is a good survey or overview of the research on nerve conduction velocity? I'm particularly ...
jskattt797's user avatar
3 votes
1 answer
88 views

What are the evolutionary advantages of displaying fear?

The advice to not show fear is often given, and for good reason. Displaying fear will make one appear weaker, increase the likelihood of others attacking, and cause self-doubt to spread. However, it ...
Pascal Widmann's user avatar
0 votes
1 answer
240 views

Can an EEG response be phase-locked but not time-locked?

In EEG, there are two commonly encountered notions of linkage between a stimulus and a response, usually encountered in literature surrounding event-related potentials (ERPs) or evoked potentials (EPs)...
David Cian's user avatar
2 votes
0 answers
49 views

Is there any neurological research on schema theory?

I noticed schema theory is frequently mentioned in educational psychology and sociocultural topics but didn't find neurological research related to it. I wonder if there are some shared mechanisms ...
angushushu's user avatar
1 vote
0 answers
21 views

Are there open data for long-term potentiation/depression experiments?

The following is Figure 8.2 from Dayan & Abbott (2001), p. 292: It describes the phenomenon of long-term potentiation/depression (LTP/LTD): Change in synaptic strength (y-axis) is inversely ...
Joram Soch's user avatar
-1 votes
1 answer
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Is there a name or any research on white flashing behind the eyes?

I have encountered anecdotal evidence that sometimes when people meditate, as they progress to higher levels, they sometimes experience flashing white light behind the eyes. And I have also ...
Julius H.'s user avatar
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Does varying evening exposure to blue light sabotage a consistent sleep/wake schedule?

Sleep hygiene measures include keeping a consistent bed time and, more importantly, wake time (Chaput et al., 2020). It is also suggested to minimize exposure to evening blue light (Chellappa et al., ...
Eggman's user avatar
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1 answer
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Flow of ions in postsynaptic potentials [closed]

My understanding of postsynaptic potentials is that excitatory neurotransmitters cause Excitatory postsynaptic potentials (EPSPs) and inhibitory neurotransmitters cause inhibitory postsynaptic ...
Rider's user avatar
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Can this concentration exercise improve cooperation between the left and right hemisphere?

This exercise aims to stimulate and practice the communication between both hemispheres of the brain, thereby increasing the "processing power" of your conscious activity. https://thiaoouba....
Philips Screwdriver's user avatar
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Question about How to assign the order of vertices of a pial surface in FreeSurfer

I'm a CIVET user but I recently started to use FreeSurfer. As far as I know, for a surface from CIVET, its vertices are ordered by upsampling a polygon. So I could access downsampled surface by ...
yanghee Im's user avatar
1 vote
1 answer
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Can brain improve "non-active" functions?

I'm from computer science background and this question struck me when learning about neural networks as they are initially filled with random values. Can brain improve "non-active" functions ...
tmvkrpxl0's user avatar
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Is sprouting an example of an axonal or dendritic mechanism of synaptic plasticity?

Hi I am having trouble wrapping my head around the mechanisms of synaptic plasticity which include Sprouting Rerouting Pruning I have read conflicting sources of information, some suggesting that ...
charl2.718's user avatar
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What experiments have explored qualia by pursuing neural channels from their sensory inputs?

I was just thinking that it seems like the most immediately accessible way to try to observe in greater detail how the electrical flows across synaptic connections constitute qualitative experience ...
Julius H.'s user avatar
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5 votes
1 answer
759 views

How do hair cells recognize frequencies?

I read that "a neuron can fire up to 1000 all-or-none impulses/sec" 1. But the hair cells in our ears are trimmed to recognize frequencies up to 20 kHz. How can a hair cell detect a ...
Leon Schreiber's user avatar

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