Questions tagged [neuroscience]

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

Filter by
Sorted by
Tagged with
2 votes
2 answers
1k views

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 ...
achabacha322's user avatar
2 votes
1 answer
107 views

Is the energy of an action potential divided among multiple axon terminals?

My understanding is that the bulk of an axon is myelinated, greatly adding to the efficiency of transmitting action potentials. However, the axon terminals are not myelinated. I'm wondering if the ...
visual-kinetic's user avatar
2 votes
2 answers
67 views

Are there any standard tools for neuroscience models programming, like for spiking neural networks?

I come from deep learning environment and there is quite a few standard tools and frameworks that you can use in different occasions. I am trying to build a spiking neural network model in Python and ...
czechpy's user avatar
  • 21
2 votes
1 answer
296 views

How to evaluate the convergence of a staircase?

I have a 2AFC staircase, with transformed up and down method (2up 1 down) or (2down 1 up), with equal step size (at the beginning there are higher step sizes, at the end there are the lower value). ...
Mik's user avatar
  • 21
2 votes
1 answer
352 views

Types of receptors on a single synapse or neuron

I have been googling and couldn't find the answer to these questions. For a given synapse, can a post-synaptic neuron have multiple types of receptors for different neurotransmitters or is typically ...
Matt Miguel's user avatar
2 votes
1 answer
41 views

Difference between conditioned freezing, shock sensitization to startle and conditioned fear potentiation to startle?

I am reading paper-listed below-that talks about three terms, Conditioned freezing; Shock sensitization to startle; Conditioned fear potentiation to startle. I understand that conditioned freezing ...
Malaz Kreiker's user avatar
2 votes
1 answer
46 views

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
Jack's user avatar
  • 123
2 votes
1 answer
475 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 ...
Wuschelbeutel Kartoffelhuhn's user avatar
2 votes
1 answer
40 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?
Dadep's user avatar
  • 213
2 votes
1 answer
194 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 ...
Feelsbadman's user avatar
2 votes
1 answer
268 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 ...
rus9384's user avatar
  • 567
2 votes
1 answer
82 views

Why is the distribution of mean firing rates assumed to be Gaussian?

I'm reading "Principles of Neural Information Theory" by James V Stone and in section 3.5 he says that the distribution of firing rates (of a single neuron) is generally assumed to be approximately ...
Eben Kadile's user avatar
2 votes
1 answer
2k views

Why do I perform better at rhythm games after a long period of not playing?

Every once in a while I decide to play Phase Shift (very similar to Guitar Hero). I might go weeks or months between plays, but when I return, I often break a high score within the first few songs I ...
Kendall Frey's user avatar
2 votes
1 answer
72 views

Do major historic events have a lasting impact on humankind's objective happiness?

In his book "Sapiens - a Brief History of Humankind", Harari argues that the biochemistry of "happiness" in any person can only move within bounds, dictated by genetics. He also argues that happiness ...
Claas M.'s user avatar
2 votes
1 answer
2k views

Function of heart neural network?

I have found articles the try to give a possible biological neural network for the movement of limbs, neurons in the eyes, etc. Is there an explanation on how the neural network that controls the ...
fanix's user avatar
  • 55
2 votes
1 answer
8k views

Is the Rubin Vase illusion an example of inattentional blindness?

Generally, people looking at an example of a Rubin Vase see either the vase, or the faces. The brain seems to make a decision on which one is being viewed, but both cannot be focused-on at the same ...
D. Wade's user avatar
  • 129
2 votes
1 answer
64 views

How long does a spiking signal last?

It is surprisingly hard to find information about the timing of neurons, in particular how long an action potential can contribute to the summation of a neuron. Is it on the order of milliseconds or ...
Lenar Hoyt's user avatar
2 votes
1 answer
1k views

How large is a neurotransmitter? Max and min sizes?

What size(s) are neurotransmitters? What is their size relative to the synaptic cleft? Relatively speaking, can we tell how far they must travel to cross the gap? Twice their own length? More? I ...
Kay Stoner's user avatar
2 votes
1 answer
3k views

"top-down" and "bottom-up" processes

What kind of processes are "top-down" and "bottom-up" processes in the context of processing visual information in brain? Context: ...There are discrete areas in the visual cortex dedicated to ...
user9258's user avatar
2 votes
2 answers
113 views

Are there any serious neuroscientific theories of emotional valence?

Could anyone tell me if there are any serious neuroscientific mechanisms that have been proposed to explain how feelings of body states take on a positive or negative character (valence)? An example ...
user avatar
2 votes
1 answer
104 views

What are the neurobiological factors associated with intelligence in animals?

For example, is there a well-defined relationship between "number of neurons in the cortex" and some measure of "intelligence" in animals? I'm familiar with the encephalization quotient - that is, "...
rphv's user avatar
  • 123
2 votes
1 answer
551 views

OCD Motivation and Dopamine Motivation, is there a connection?

I understand that OCD is something that causes sufferers to perform irrational behavour consciously, I also understand that the motivation comes from performing the irrational behaviour/behaviours to ...
Sam Chahine's user avatar
2 votes
1 answer
78 views

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
  • 55
2 votes
1 answer
115 views

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
2 votes
2 answers
72 views

What does "all-or-nothing" means in spiking neural network?

I'm reading a paper by Auge et al. (2021). In the introduction they said "Spiking Neural Networks (SNNs) use short 'all-or-nothing' pulses to encode and transmit information". I'm not sure ...
Natchapol Patamawisut's user avatar
2 votes
1 answer
449 views

How to calculate Fano Factor for spike train data?

I've heard this used many times but never had to do it myself. How does one calculate Fano Factor (FF) for spike train data? Let's say that you have for some neuron the spike count in a certain time ...
Alex's user avatar
  • 21
2 votes
1 answer
161 views

How do the outer hair cells amplify the traveling wave?

Depending on the movement frequency, outer hair cells can stretch and contract, amplifying the amplitude of the traveling wave at the basilar membrane. How can they do this exactly? what is the point ...
Math_Man1's user avatar
2 votes
1 answer
317 views

Deflection of the basilar membrane

The basilar membrane becomes thicker and heavier from the basal end to the apical upper end - this is why high frequencies are perceived in the lower range and low frequencies in the upper range. But ...
Math_Man1's user avatar
2 votes
1 answer
280 views

What is the cochlear frequency response by number of hair cells?

I am trying to recreate the cochlea/basilar membrane response to sound and want to know how the hair cells are bucketed or binned by frequency, so an ideal list would be something like 10 kHz - 12 kHz:...
Keno's user avatar
  • 597
2 votes
1 answer
67 views

Neurologically, how does a thought terminate?

What prevents my brain from holding the same thought forever, like a frozen computer? How do neurons terminate a firing pattern and move onto the next?
Alexander Weir's user avatar
2 votes
1 answer
167 views

What is the difference between recurrent and feedback synapses?

In the paper proposing recurrent convolutional neural networks (RCNN), "Recurrent Convolutional Neural Network for Object Recognition", it is stated that "recurrent synapses typically ...
David Cian's user avatar
2 votes
1 answer
49 views

research based criteria domain and DSM5

Is there any major difference between the two classification systems ? and why is there no awareness as of yet about research based domain for classifying mental disorders when it for the larger part ...
Radhika 's user avatar
2 votes
2 answers
127 views

In principle, could a brain be rewired to experience more pleasure and/or pain?

I'm not sure if these are two separate questions, but I'm curious: in theory, could an existing adult mind/brain be modified to perceive pleasure/pain signals more intensely than otherwise? Without ...
productivesnail12's user avatar
2 votes
1 answer
64 views

Can two neurons stimulate each other?

Is it possible that two neurons stimulate each other in an everlasting two neuron circuit?
WinnieThePooh's user avatar
2 votes
1 answer
136 views

Can eye tracking be used as a form of biofeedback?

I'm an occasional meditator and I've noticed that conceptual thought often produces eye movements, and I'm curious if anyone has tried using eye movements as a form of biofeedback. The Muse headset ...
ak0000's user avatar
  • 123
2 votes
1 answer
29 views

Is the approximation of the Medial Frontal Gyrus in the region of the Dorsolateral Prefrontal Cortex?

I'm wondering if the MFG is located in the region considered the DLPFC?
TomD's user avatar
  • 23
2 votes
1 answer
81 views

Mechanism for deleting old memories

Do we have any mechanism for deleting neuronal connections? That is, if I learn a better version for doing something, I assume the brain will create a new neuronal connection, and we will use this ...
Quora Feans's user avatar
2 votes
1 answer
162 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. ...
George Ntoulos's user avatar
2 votes
1 answer
104 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 ...
ashukid's user avatar
  • 123
2 votes
4 answers
102 views

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?
DSP_CS's user avatar
  • 123
2 votes
1 answer
35 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.
Muhammad Umer's user avatar
2 votes
1 answer
41 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 ...
norlesh's user avatar
  • 409
2 votes
1 answer
48 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 ...
norlesh's user avatar
  • 409
2 votes
1 answer
230 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?
John Doe's user avatar
2 votes
1 answer
350 views

Kinetic synesthesia evoked by abstract thoughts?

Can the experience of movement when mentally visualizing the network/structure of the code of a complex application, and the information that flows through the network as a programmer be a kind of ...
dsvensson's user avatar
  • 123
2 votes
1 answer
61 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, ...
Forsete's user avatar
  • 21
2 votes
1 answer
73 views

Performance of a damaged brain

I have heard stories/reports that if a certain part of the brain (taking care of certain functions) is damaged other parts take over the function of the damaged part. Intuitively this could mean 2 ...
DuttaA's user avatar
  • 171
2 votes
1 answer
64 views

In TD learning, is the weight function used as a linear filter?

In the Temporal difference learning algorithm (TD-learning), an agent seeks to predict the total value of future rewards that will be received during the current trial. The agent updates the ...
Nasorenga's user avatar
2 votes
1 answer
262 views

What is "synaptic polarity" in a chemical synapse?

I'm reading a paper and they are discussing modelling the neural networks of an organism. One of the key things they are interested in is finding out the synaptic polarity of chemical synapses. What ...
Michael Stachowsky's user avatar
2 votes
1 answer
57 views

Does a comparable metaphor exist for cognition that exists for slow & fast twitch muscle fibers?

Skeletal muscles have slow and fast twitch fibers that differ in their rate of fatigue. Is there an analogue in the subject of cognition? For example I might be very quick at doing coding but very ...
Gabriel Fair's user avatar

1
11 12
13
14 15
21