Questions tagged [vision]
For questions regarding the visual system, which serves to transduce light energy into neural impulses, or regarding visual perception, how we interpret such incoming visual information.
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Why do evenly spaced colors have varying hue differences?
When looking at a color wheel with evenly divided colors in RGB/HSV/etc. the difference between them seems to vary a lot. For instance, the difference between Violet and Magenta seems so much more ...
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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 ...
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gamma correcting a sinusoidal grating [psychophysics]
I am developing a stimulation setting wherre I present a sinusoidal grating to a subject. Because of the monitor gamma expansion by a factor of 2.2, I need to gamma compress my sinusoidal grating by a ...
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Can a blind-from-birth individual experience vision or visual imagery during a Near-Death Experience (NDE)?
I recently watched a testimony in which a blind-from-birth individual described two NDEs they had had in which they supposedly were able to see with 20/20 vision (inside the NDEs). The person ...
user34126
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Functional/Cognitive Acuity/Manipulability
I'm trying to find an existing construct for what I refer to in my research as "Functional Acuity" (hereafter FA). The concept of FA is analogous to what one can see with v w/o one's glasses....
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Is the retinal image a picture? [duplicate]
I have some books on visual perception in which the retinal image in the human eye is described and represented (in pictures) as a "picture" or "visual representation" of the ...
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Average number of neurons a signal travels through?
What is the average number of neurons a signal goes through before reaching the end?
Although it may be naive, it seems that the maximum amount of neurons a visual signal, for example, that passes ...
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How to calculate latency between two different brain region in Steinmetz dataset?
I am new to Computational Neuroscience and recently, I came across to Steinmetz dataset and looking into the dataset, I had an idea of calculating the latency between two brain regions in terms of ...
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Do humans see rates of change of colour
On a computer, we measure colour numerically, as three values, say red, green, blue. While our eyes include detectors for red, green and blue (although these aren't exactly the same as the light ...
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Is there a Mach band on a step edge or not?
Recently, I've been reading about the Mach band effect and there is a particular case which is confusing me a little bit, since people don't seem to agree on what actually should be perceived.
It is ...
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Which unit should be used to compare perceived spatial frequency of 2 different sized image? Cycle per image or cycle per degree?
I am interested in the topic of spatial frequency and its impact on face processing. I have been reading about previous studies that have used different spatial filtering thresholds for their stimuli. ...
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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 ...
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Macaque V1 excitatory and inhibitory neuron tuning properties?
I am looking for tuning properties of excitatory and inhibitory neurons in V1 of Macaque (like orientation and direction selectivity), similar to results reported by Niell and Stryker (2008). Most ...
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Does the human eye have a muscle that if paralyzed would make us only see things that are in motion?
In "Kwantechizm", a relatively popular book written by a Polish physicist Andrzej Dragan, I read that chickens move their head so that they can see things that are not in motion, with the ...
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Which waveform for photic stimulation should be used to generate SSVEP in a narrow band around desired frequency
I am trying to build my own flickering light stimulation device. The light source will be a COB Red LED cluster (~627nm) (like one of these) with brightness controlled using Pulse Width Modulation ...
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