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Questions tagged [sensory-perception]

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Integrating Distinct Color Info From binocular vision?

Are humans capable of learning to integrate different color information from their two eyes? If someone wore glasses all the time with different filters on left/right eyes (eg a red suppressing filter ...
Peter Gerdes's user avatar
1 vote
0 answers
75 views

Can a person hear hours after dying?

A person close to me passed away recently in the hospital. About 2 and a half hours after clinical death*, the nurse told us that they could still hear** us and encouraged us to keep on talking to the ...
CMK's user avatar
  • 111
1 vote
0 answers
35 views

What does it sound like, subjectively, when a shockwave bursts your eardrums?

A pressure pulse above 150 dB will burst the eardrums. I speculate that displacement of the membrane is far above normal range. I speculate that the initial displacement will get passed along to the ...
DrBunny's user avatar
  • 11
5 votes
2 answers
90 views

Why didn't the animal/human brain evolve to being able to create a comprehensive map of the environment?

I am just wondering about this. I am a computer science student, and I have been looking into the SLAM (Simultaneous Localization and Mapping) problem. The problem is that you want to both create a ...
Krampfmeister's user avatar
1 vote
1 answer
69 views

What are the biological reasons for hearing loss?

I recently stumbled upon an interesting online hearing test on YouTube, and it got me thinking about the root causes of hearing loss. I'm curious about the main contributing factors behind the loss of ...
GEP's user avatar
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0 answers
30 views

What are the effects of an overexposure to solitary confinement?

Solitary confinement has been shown to be bad for mental health. I was wondering if really long solitary confinement, like this one are different to normal solitary confinement. In terms of effects ...
Aseku Vena's user avatar
4 votes
1 answer
274 views

How is 'purple' both ligt at one wavelength and the sum of light at two different wavelengths?

I see purple, violet, magenta, etc. as very similar shades and don't understand why. Consulting color wavelength charts like we see that purple (or violet) is about 400 nm. Consulting color mixing ...
Faur's user avatar
  • 211
2 votes
0 answers
14 views

Long-term effects of looking at restricted color gamuts

Computer screens are very bad at representing pure colors, in particular green (note the large uniformly green area on the charts that wouldn't be uniform if your screen could render highly saturated ...
Kevin Kostlan's user avatar
0 votes
0 answers
33 views

Switching up senses

What if you change the connections of the brain to where the eye is connected to the part of the brain that creates taste. Will it start to adapt and begin to see with that part of the brain? Or will ...
no name the astronaut's user avatar
3 votes
1 answer
320 views

Is thermoception part of the sense of touch in the 5 human senses or is it a 6th separate sense?

In an answer provided by DavidCian, it is mentioned that thermoception is separate to the 5 human bodily senses (sight, hearing, touch, smell and taste). Yet, I would have thought it would be part of ...
Chris Rogers's user avatar
  • 12.3k
3 votes
2 answers
142 views

Are centre-surround antagonism and lateral inhibition synonyms?

On Wikipedia, there is one page for centre-surround antagonism and one for lateral inhibition. They both concern the activity of a neuron being reduced by stimuli present not in the center of its ...
David Cian's user avatar
1 vote
1 answer
77 views

Mirrors/optics and physical adaptation of the eye

Is it possible to use a clever combination of lenses and mirrors placed between your eye and a screen 1m away from you to make the eye react to the screen as if it were 20m away from you? What I'm ...
abelian's user avatar
  • 111
1 vote
1 answer
1k views

The differences between sensory distortions and hallucinations

So, the way I've understood it, "sensory disturbances" can be categorized as follows: Any sensory experience that isn't real goes under "sensory disturbances" in this diagram. If ...
A. Kvåle's user avatar
  • 271
3 votes
1 answer
93 views

What is it called, when people lean forward in the real world while moving forward in a Virtual Environment?

A test subject wears a Virtual-Reality-Headset (like the HTC-Vive). When the test subject moves forward in the virtual world and stands still in the real world, the subject tends to lean forward in ...
kiaat's user avatar
  • 31
2 votes
1 answer
133 views

What scientific evidence is there for the definable real world quality of redness independent our perception?

'With light poise and counter-poise, Nature oscillates within prescribed limits. Yet thus all arise the varieties and conditions of the phenomena which are present to us in space and time.' - Goethe ...
A. E. Sam's user avatar
6 votes
2 answers
213 views

What is the conceptual difference between causal inference and 'prediction'

Unifying brain theories of cortical function often describe the brain as a prediction machine, based on a generative model (given X, what's the probability of Y). In this context, from Bayesian ...
user2305193's user avatar
0 votes
0 answers
32 views

Does the desynchronization of some bands mean an increase in the prevalence of the other bands?

In this article, Broadband Cortical Desynchronization Underlies the Human Psychedelic State, this sentene is said: Psilocybin reduced spontaneous cortical oscillatory power from 1 to 50 Hz in ...
A. Kvåle's user avatar
  • 271
1 vote
0 answers
369 views

Change in perceived direction of body when laying in bed [closed]

Sometimes when I lie in bed, with my eyes closed, I get the sense that my head is actually at the bottom of the bed, where my feet usually are, when I know it is still resting on the pillow on the top ...
A. Kvåle's user avatar
  • 271
1 vote
0 answers
47 views

Requirements and development of depth and spatial orientation sensing

I'm trying to understand from the signal processing perspective how the perception of depth and the ability of spatial orientation is calculated by our brains. One possible explanation seems to be ...
Eugen's user avatar
  • 111
6 votes
1 answer
158 views

Is there a term in psychology for when a tool is perceived as an extension of your body?

Is there a specific term that describes the phenomenon where you perceive a tool as an extension of your own body? An example of this would be when a skilled artist or tradesman has so mastered their ...
Scribbler's user avatar
-1 votes
1 answer
68 views

Question about the role of the sensory receptors compared to the sensory cortoces

I have two questions regarding the fact that each sensory receptor has its specific ion channels that open in response to a specific stimulus (for example, ion channel that opens when streching for ...
Idop11's user avatar
  • 109
0 votes
0 answers
52 views

Are thoughts a kind of internal sensory data?

I know very little about neuroscience and psychology, but I am curious about how our understanding of thought fits into our picture of the brain. Thoughts, as I understand them, are a kind of ...
natojato's user avatar
  • 101
3 votes
3 answers
161 views

Synchronization of perception of sensory information

I am not an expert (actually I am not even psychologist/neuroscientist or anything like it).My question is: Since light and sound comes to, respectively, our eyes and ears at different times and "...
Jp_'s user avatar
  • 33
1 vote
0 answers
41 views

How a living being (a huge collection of atoms) perceive things? [duplicate]

How a series of physical and chemical events leads to a very non physical/ intangible perception? For example, let's say a certain wavelength of light falls on the retina of my eyes, then the sensory ...
Ankit Kumar's user avatar
4 votes
1 answer
258 views

Multistable perception with three possibilities

I know that multistable perception refers to the phenomenon that occurs when we look at an ambiguous image like a Necker Cube or some sort of positive/negative space art, and we can’t perceive both ...
Franklin Pezzuti Dyer's user avatar
1 vote
0 answers
64 views

What is the "perceptually correct" range or map of negative (inverted) colors?

When using software to invert the colors of a picture or screen, the software just blindly (literally) uses a mathematical formula to calculate the inverted color of each pixel. For example, in RGB, ...
Nico Brenner's user avatar
2 votes
1 answer
88 views

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 (...
Chris Rogers's user avatar
  • 12.3k
4 votes
1 answer
171 views

How can someone asleep recognize a very brief sound?

I have a snoring girlfriend. To interrupt her snoring, I make a sound similar to the very brief sound gas makes when opening a soda can or bottle (had a snoring brother, I know this technique works ...
Max's user avatar
  • 43
3 votes
1 answer
469 views

How quick a flash of light is invisible

I know this overlaps a lot of previously asked questions but: I understand that 'A photon hits a photosensitive molecule in a photoreceptor in the retina, which causes a chemical change. [...] Vision ...
James Carlyle-Clarke's user avatar
3 votes
2 answers
220 views

for a persistent perceptual experience, why is video able to have a lower frame rate than audio?

In film, images are typically shown to us at around 24 frames per second, but modern sound files will often have 44100 or 48000 samples per second. There's a threshold above ~12 fps where we will ...
RECURSIVE FARTS's user avatar
6 votes
1 answer
325 views

How are tactile pleasure and pain differentiated in the somatosensory cortex?

A recent question here asked about (mostly) how pain and pleasure are differentiated in pathways involving reward/aversion cues. But there was some confusion as to what the question really wanted to ...
got trolled too much this week's user avatar
4 votes
1 answer
1k views

Is there a difference between physiological stimulations and psychological stimulations?

From what I understand, physiological stimulation (or stimulus or sensation) "refers to sensory excitation, the action of various agents or forms of energy (stimuli) on receptors that generate ...
Ooker's user avatar
  • 1,781
1 vote
0 answers
26 views

is low pitched machine synthesized speech easier to comprehend at high rates?

all I have is anecdotal experience, try it out yourself. I couldn't find any published study, was anything published about that?
Wis's user avatar
  • 111
3 votes
0 answers
149 views

Filter of perception

I read a book about sensory perception in ASD from Olga Bogdashina(Sensory Perceptual Issues in Autism and Asperger Syndrome, Second Edition). She reffer to some kind of filter in sensory inputs, but ...
L.Dodo's user avatar
  • 63
4 votes
0 answers
118 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 ...
Hans-Peter Stricker's user avatar
2 votes
1 answer
353 views

What are the definitions of 'multi-channel coding' and 'opponent channel coding'?

I am looking for the definitions of Multi-channel coding Opponent-channel coding And specifically in the context of visual adaptation. I have searched for information on the web and in books, but ...
Carl Wagner's user avatar
4 votes
1 answer
209 views

Is there knowledge of the receptive field patterns of cortical columns in associative brain regions?

The retinotopic, area-based connectivity patterns of the columnar receptive fields in the visual cortex are well-established. Do any mappings of the columnar receptive field connectivity patterns ...
Iridian Kiiskinen's user avatar
5 votes
2 answers
1k views

Can binaural beats be generated with carrier tones outside the audible frequency range?

I know that binaural beats are a controversial subject, as they might not work for everyone. In my own tests on myself I shuffled multiple recordings of binaural beats, with stereo headphones on, not ...
user1973385's user avatar
1 vote
0 answers
659 views

What makes you like someone? [closed]

Everyone has some friends and some people, you can't get along with. But what makes them different? Is it smell, the voice, attractiveness, the way they express themselves, their sence of humor? I ...
Frezzley's user avatar
  • 121
1 vote
0 answers
40 views

Model of human estimation of correlation tasks

I am looking for a model (bayesian or not) on how people would estimate the correlation between two variables from a given scatter plot. Any one knows of such model?
amaatouq's user avatar
  • 193
2 votes
1 answer
105 views

If light travels at c, and the human nervous system's speed/perception speed<c, why aren't we not seeing or blind at some times?

If light travels at c, and the human nervous system is a lot slower than light speed, therefore it would take a lot of time for us to process what we see, why aren't we blind to what's going around us ...
Jack's user avatar
  • 21
4 votes
1 answer
4k views

Difference between thoughts and sensations

I am interested to know how to distinguish sensations from thoughts, according to the techniques and concepts of neuroscience and psychology. Is there an explicit distinction between them, or are ...
Luoisv's user avatar
  • 43
2 votes
2 answers
93 views

How are positions and counts of higher concepts encoded in sparse representations?

I understand that levels in the sensorimotor hierarchy of the brain learn recurring features of their input streams. The results are activation patterns with single neurons firing for the existence of ...
danijar's user avatar
  • 771
5 votes
1 answer
6k views

What causes the sensation of taste when Dimethyl Sulfoxide (DMSO) is absorbed through the skin?

The Wikipedia page for DMSO says: The perceived garlic taste upon skin contact with DMSO may be due to nonolfactory activation of TRPA1 receptors in trigeminal ganglia ...and references a PLOS1 ...
kartik_subbarao's user avatar
2 votes
1 answer
99 views

Does the retina contribute in distinguishing lines and borders?

I think there is a phenomenon behind the way which our eyes judge between lines of contrast, like black lines on a white page, by just recognizing the contrast areas at the level of the rods and cones....
Usman Mehmood's user avatar
6 votes
1 answer
574 views

In psychophysics, why are log luminance rather than absolute luminance values reported?

Are there any papers which justify converting into log luminance? For example papers showing humans being sensitive to changes in log luminance rather than luminance per se?
Lenna's user avatar
  • 71
6 votes
1 answer
110 views

Does synesthesia lack symmetry?

Some synesthetes report seeing bright flashes when hearing a loud noise. However, in the same person, bright flashes of light are not reported as being loud. I've read of other examples like this; ...
Dan Bryant's user avatar
3 votes
1 answer
4k views

Difference between active and passive touch?

I am considering the role of whiskers in the development of the mouse brain, and came across the following: 'we found that the signals sent to the brain by the whiskers during active touch differ from ...
Meep's user avatar
  • 425
6 votes
1 answer
125 views

Is inhibitory brain circuitry involved in cross-modal sensory perception?

In many research articles, a vague description of a inhibitory circuitry in the brain is mentioned. This is presented as an inhibitory mechanism that prevents input from one sensory modality to excite ...
Mehdi's user avatar
  • 297
3 votes
0 answers
61 views

Tactile perception of printed advertising materials and brand image

Does texture of paper (e.g.matt or glossy) of printed advertising materials affect the perception of brand image? From what I've researched so far (http://entermotion.com/blog/2014/01/this-...
drabsv's user avatar
  • 955