Questions tagged [cognitive-neuroscience]

For questions regarding the study of the underlying neural substrates of cognition, especially those at the crossroads of psychology and neurobiology

Filter by
Sorted by
Tagged with
5
votes
1answer
74 views

When your two eyes disagree sharply

Now and then, the image from each eye is so different from the other that it seems the brain has trouble combining them into a coherent image. You can create this situation by putting a hand or sheet ...
1
vote
0answers
38 views

Why is it hard to not read some text

I have observed this and felt very uncontrollable. Whenever I see some text (in a language that I know) I start reading automatically. I don't see them as some curves... With intense focus I could ...
2
votes
0answers
29 views

Why we do what we aren't allowed to do

Don't touch the red button, or don't touch that chocolate cake while I'm gone. Why is it that we most likely will touch them anyway?
6
votes
2answers
91 views

Why does cathodal tDCS (negative) produce sensation, while anodal tDCS (positive) does not?

If neurons fire due to an intracellular influx of positive ions, why are the negative electrodes in tDCS felt more strongly than the others? For example, see "Reducing Procedural Pain and Discomfort ...
2
votes
1answer
108 views

Why do brains prefer internal consistency?

I need to preface this by saying I know next to nothing about this topic, so if the question is built on wrong premises, feel free to address that in an answer. From and related to: What is the ...
1
vote
1answer
33 views

What is a effective and interactive exercise to demonstrate cognition to a class

I'm new to this site so I may mess up here and there with the question process. I need to come up with an interactive exercise for a class to demonstrate cognition. The problem is, I find cognition ...
1
vote
0answers
28 views

What ways are there to think? [duplicate]

When I think, I generally think in words (in English primarily, though sometimes in Russian). Essentially, I speak to myself in my mind, and ask questions and formulate plans. However, sometimes I ...
3
votes
0answers
51 views

If demyelination doesn't typically occur, what happens when a musician doesn't practice for a month?

In "The Talent Code," the author makes this statement: What's the simplest way to diminish the skills of a superstar talent? The answer: don't let them practice for a month. Causing skill to ...
1
vote
0answers
14 views

Mirror neurons in different ape & child rearing

Somewhere in the the past I saw a study talking about a type of ape that raises it's young in creches, unlike chimpanzees which at most carefully choose occasional babysitters. The study made the case ...
3
votes
1answer
501 views

Can you give an example of automatic appraisal process?

I was reading this slide provided by my prof. of Affective Neuroscience. I've read that appraisal is considered a constitutive component of emotion by most of the actual theories. Appraisal is defined ...
2
votes
1answer
94 views

Are the skills trained and learn from world memory championship transferable?

I recently learn something about world memory championship and I am considering to embark on some training. But I would like to know if the skills trained and learn from world memory championship are ...
1
vote
0answers
40 views

Longitudinal studies on: how attention to emotional stimuli develops from infancy to childhood?

According to LeDoux’s model (1996) we have specialized pathways for processing emotional cues. Pourtois, Schettino and Vuilleumier (2013) offer a neural model of how emotional signals capture ...
2
votes
1answer
295 views

Is detection of angry faces more efficient in humans?

Hansen and hansen proposed the anger superiority effect: threatening faces pop out of crowds, perhaps as a result of a preattentive, parallel search for signals of direct threat. Pinkham (2010) ...
4
votes
1answer
267 views

How exactly does transcranial direct current stimulation (tDCS) work?

The method of transcranial direct current stimulation (tDCS) involves the flow of electric charge from a positive electrode to a negative one. This method is not exactly a stimulation method because ...
3
votes
2answers
2k views

Do stimulants increase the IQ tests score for everyone?

There is some meta-analytic evidence that stimulants increase the IQ test scores of ADHD children by 2 to 7 points (Jepsen et al., 2009). Although giving stimulants to non-ADHD children may be ...
1
vote
0answers
212 views

Do central pattern generators control musical performance?

Are the sometimes very fast and complicated rhythmic movements and often long lasting patterns a musician performs while playing a piece of music generated by central pattern generators (in the sense ...
12
votes
1answer
187 views

By which neuronal mechanisms does music make us happy or sad?

There are brain regions (X) that show stronger activation for joyful music, regions (Y) that show stronger activation for sad music, and regions (Z) that show similar activation for both. Assuming ...
2
votes
0answers
154 views

How to analyse EEG files recorded from Brain Products V-Amp (Brain Vision Recorder)?

I have 3 files recorded from Brain Vision Recorder. They are in the following formats: .eeg .amrk ...
2
votes
1answer
44 views

Representations of negated propositions

The following question is quite hypothetical, and just to get an idea. Assume any model of how positive propositions $p$ are actively (opposed to synaptically) represented in a neural network, e.g. "...
2
votes
1answer
42 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 ...
5
votes
2answers
95 views

What are the benefits of giving feedback to subjects during a discrimination task?

Context I am planning an experiment where the subjects would need to determine the language of the stimulus after listening to it once, given two alternatives, L1 or L2. In total I have 500 trials ...
2
votes
1answer
194 views

Benefits of Preserving Dopamine

I recently came across a short piece on Twitter advocating for the preservation of dopamine release. The writer stated that a list of things should be avoided to preserve dopamine. Preserve your ...
4
votes
0answers
98 views

How do patients with an amputated limb experience and report their phantom perceptions?

[I changed "sensations" to "perceptions", due to @AliceD's comments here.] Suppose a patient with an amputated limb experiences and reports some phantom perception at the limb: the limb just being ...
4
votes
0answers
34 views

Region of Interest Proposal in Vision

In machine learning, Region of Interest (ROI) proposal is a method for subsampling an image to identify "interesting" subregions. A canonical example is from Region Convolutional Neural Networks, ...
0
votes
0answers
34 views

Are there any methodological challenges to study real-time social interactions?

If the emotion of fear (for example) has evolved so that humans can react in an adapted way to danger, why would we be afraid in a laboratory setting, and would this fear be similar to that we ...
5
votes
1answer
422 views

What does “non-linear processing” mean, exactly?

In the following sentence from "How does the brain solve visual object recognition?" by DiCarlo et al.: In sum, our view is that the “output” of the ventral stream is reflexively expressed in ...
2
votes
1answer
32 views

Do action potential thresholds vary in “capacity” significantly, and if so, does input frequency correspond to action potential thresholds?

To clarify, I'm asking if the level of stimulation / polarization required for a neuron to reach action potential / excite the neuron varies significantly from neuron to neuron- even differing in ...
4
votes
2answers
937 views

Can drugs cause positive reinforcement for undesirable tasks?

For this example, I will use alcohol as an example drug, since it's legal and increases dopamine. Can drinking alcohol when performing unpleasant tasks, such as homework, cleaning, or laundry confuse ...
3
votes
1answer
44 views

Cockroach olfactory bulb response to novel stimuli

I've heard anecdotally, that the cockroach olfactory bulb responds differently to novel stimuli vs. known stimuli. Specifically, it sends an oscillatory firing pattern for known stimuli and a constant ...
7
votes
1answer
118 views

Question concerning Jeff Hawkins' On Intelligence

In 2004 Jeff Hawkins' book On Intelligence was widely praised. But Hawkins made some claims about artificial neural networks that seem (to me) untenable today, only 13 years later. He gives the ...
3
votes
2answers
150 views

Efficiency of multitasking depending on task difficulty

How does the efficiency of multi-tasking differ by task type? My understanding is that multitasking impairs efficiency for cognitively challenging tasks. Does this apply to trivial tasks as well?
4
votes
1answer
332 views

During body-scan ('sweeping') meditation, what does brain-imaging (e.g. fMRI) look like?

I do not know how extensive body scans have been studied with brain-imaging techniques, e.g. fMRI. Body scan is a meditation technique developed by Jon Kabat-Zinn. It was derived from a meditation ...
1
vote
2answers
92 views

Can we identify specific emotions on the basis of fMRI scans?

I am looking for fMRI studies in which the emotional response of a person listening to music is visible in the fMRI scans, paralleled by a retrospective think aloud report of the person describing his/...
3
votes
0answers
58 views

Which is the actual scientific position on the expression of human emotions?

According with Darwin's “Expression of the Emotions in Man and Animals”: specific emotional states seek to appear on each human being - even on blind people - , with no differences of cultures. ...
3
votes
1answer
81 views

Effect of plateau in BTSP

In "Behavioral time scale synaptic plasticity underlies CA1 place fields" by Bittner et al. an alternative to Hebbian plasticity is proposed called Behavioral Time-scale Synaptic Plasticity (BTSP). ...
1
vote
0answers
78 views

Hypothetical working and function of grandmother cells [closed]

I wonder, if the following model of the working and function of hypothetical grandmother cells is worthy of consideration or not (or if it is even a common view, just differently stated). I assume ...
1
vote
0answers
54 views

Single person with largest number of fMRI scans [closed]

Is there a known single test person of whom the largest number of fMRI scans (while performing different tasks) have been recorded? Are these publicly available? I assume some overarching patterns ...
5
votes
1answer
98 views

Conceptual representations in brain by distributed groups of neurons

It seems generally agreed upon that semantic concepts are distributedly represented by groups and groups of groups of neurons spread over the cortex. Disregarding the localizations, shapes and ...
1
vote
1answer
59 views

Does increased neural complexity slows down brain operation speeds?

If a sensory input is perceived, one needs to process this input from the sensory end organ (sensation) up to the brain (perception). Does a more more complex neural network consume more time than a ...
3
votes
1answer
103 views

The role of high-performance in neuropsychology

As far as I understand, neuropsychology gains most of its insights from the reconciliation of lesions of the brain and cognitive impairments. Normal functioning (both of the brain and the mind) plays ...
3
votes
1answer
351 views

What is the computational role of the cortical column?

The cortex is supposedly composed of semi uniform cortical columns that are interlinked. Many of the resources on cortical columns I found using a Google search do not discuss what a column computes (...
4
votes
1answer
145 views

Does night-sleep-deprivation have any effect on cognitive performance?

Sleeping during the day might lead e.g. to vitamin D deficiency. But I am interested in what effects might night-sleep-deprivation have on cognitive faculties. Does sleeping during the day and ...
2
votes
0answers
166 views

Which Meditation Techniques Correlate Best with Certain Brain-Waves? [closed]

Which meditation techniques are better at "entraining(?)" specifically desired brainwaves? For each brainwave range, (Alpha, Theta, etc) - are certain meditative technique more effective? For ...
5
votes
0answers
56 views

Is the effect of music on stress just due to beat entrainment?

Different music genres have different beat and rhythm patterns. The lower beat and rhythm frequencies are similar to the frequency of heartbeat and this relax us. However in my opinion, it's relevant ...
10
votes
1answer
80 views

How to differentiate attentiveness, arousal and memory via gamma oscillations

I am planning an experiment using mice with in vivo extracellular recordings (and maybe also optogenetic stimulation). In these kinds of experiments, the mouse is getting a reward after executing a (...
3
votes
1answer
373 views

Any research on brain's processes involved in evil actions? [closed]

I'm reading Zimbardo's The lucifer effect: understanding how good people turn to evil in which he describes the famous Stanford prison experiment that investigated the psychological effects of ...
7
votes
2answers
650 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 ...
2
votes
0answers
109 views

Which long-term effects can hypocortisolism have on behavior?

Chronic stress can have a serious impact on our physical as well as psychological health due to sustained high levels of the chemicals released in the ‘fight or flight’ response. In abused children ...
7
votes
1answer
235 views

How does the neocortex distinguish between perception and imagination?

From my understanding, the neocortex performs both perception and imagination/planning within the same hierarchical structure. During perception, an area of the neocortex receives current input from ...
4
votes
2answers
2k views

Is praying the Catholic rosary a meditation and does it enhance brain plasticity?

Futurism.com says that meditation can shape brains and increase brain plasticity and fit. Can we say that praying the Catholic rosary is a kind of meditation and does this prayer have all the benefits ...

1 2
3
4 5
10