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
1
vote
0answers
226 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
208 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
179 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
47 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
49 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
118 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 ...
3
votes
1answer
310 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
113 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
40 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, ...
1
vote
0answers
41 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
445 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
37 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
944 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
46 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
135 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 ...
4
votes
2answers
182 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
414 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
97 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/...
4
votes
0answers
70 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
93 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
80 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
104 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
69 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
109 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
440 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 (...
5
votes
1answer
173 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
183 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
66 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
82 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
388 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
1k 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
112 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
299 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
4k 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 ...
5
votes
1answer
2k views

How do brain zaps occur?

I've recently witnessed someone undergoing brain zaps and subsequent panic attacks after having stopped their SSRI medication and 48 hours partying with heavy boozing and no sleep. Having reviewed ...
4
votes
1answer
428 views

Does taking antidepressants, anxiolytics and sleep pills significantly affect a person's intelligence?

Do antidepressants, anxiolytics and sleeping pills significantly affect the intelligence of a person, for example as expressed by the general (g) factor? Do these compounds affect the g factor each ...
4
votes
1answer
4k views

Success rates or reviews of Brain Working Recursive Therapy (BWRT), and number of sessions needed on average

Brain Working Recursive Therapy (BWRT), introduced by hypnotherapist Terrence Watts in 2011, is a brand new form of therapy. Hence, my internet search doesn't seem to give me any idea of how ...
4
votes
1answer
111 views

Can you become "mentally" bilingual after 8?

Is it possible to learn a second language good enough to be able to think in it the same way we think in our first language after the critical language learning period?
3
votes
1answer
507 views

Calculation of d'prime in forced choice experiment

I am working on psychtoolbox and in my experiment I have given two images containing two roads (one is shortcut and other is longer way). In one image, the longest way is safe and in the other the ...
2
votes
1answer
88 views

What is the neural adaptation underlying the habituation to reversed visual images? [closed]

When a person wears glasses that reverse the image upside-down, it is possible to adjust your vision in a matter of days. What are the suggestions behind the neurological process?
1
vote
1answer
25 views

Can we learn to adapt to image-reversal when being intermittently exposed to them?

I know that human vision can get accustomed to reverse vision when wearing reverse glasses for several days. But does it work when we see the reverse image just in certain moments throughout the day? ...
2
votes
0answers
400 views

In which way emotional "interference" affect the brain / the behaviour? [closed]

Think of two different scenarios. In both scenarios the subject is looking at emotional images, but in the first one emotional stimuli "interfere" with the behaviour, while in the second one ...
3
votes
1answer
319 views

How to denoise and get rid of 1/f trend of a PSD in an EEG synchronization experiment

I'd appreciate some help from you guys. I'm currently analyzing an experiment where I've entrained participants to these frequencies: Condition 1: 4.16Hz-8.33Hz Condition 2: 2.77Hz-8.33Hz ...
2
votes
0answers
36 views

Cognitive impairment in fibromyalgia

People suffering from Fibromyalgia (FM) and Chronic Fatigue Syndrome (CFS) often have memory and cognitive complaints. (Glass, 2006) In FM as in CFS, some abnormalities of cerebral blood flow have ...
1
vote
1answer
40 views

How to fix a nii or rec file with partial volume

The problem I have is that the MRI scan is stopped manually, before the exam card is completed. Thus data anaylsis programs read the header and expect a certain number of volumes but it has less, and ...
2
votes
0answers
31 views

Syncing up CPT device with EEG recording

I'm working on setting up an EEG experiment that will be going through a battery of various cognitive tasks. One of the tests is a Continuous Performance Task and to conduct that we'll be using a ...
4
votes
1answer
1k views

What are the advantages of 2AFC in a psychophysical discrimination task?

As far as I understand. In the task of Two alternative forced choice (2AFC), given two possible stimuli, $S1$ or $S2$, the subject has to decide weather he\she (it) saw the sequence $(S1,S2)$ or the ...
1
vote
0answers
34 views

Are there any approaches to measuring “physical”/“neurophysiological” aspects of one's intellectual tone/state of fluid intelligence?

Is it possible to measure/approximate/estimate intelligence with a physiological metric? What I mean is, if I put it correctly: to measure/estimate short-term memory capacity/long-term memory ...
1
vote
0answers
134 views

Is there a connection between synaptic density and cognitive capacity?

Are there studies that reveal how many synapses per mm3 are there in the average dolphin brain, compared to elephants and humans? I am wondering if there is a connection between synaptic density and ...

1 2 3
4
5
10