All Questions
Tagged with measurement vision
10 questions
0
votes
1
answer
335
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Equalize/balance brightness and saturation of different colors using RGB (across various monitors)
We want to present different colors to participants in an online experiment (in an HTML/CSS-based application, hence we'll use RGB values). More in specific, we ...
- 135
1
vote
0
answers
23
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Why does an image seem smaller through a pinhole when viewing with human eye
I was chewing gum when I took the Trident gum wrapper and rolled it into an open cylinder with a diameter of about 1.5mm (give or take 0.15mm). When I look through the gum wrapper (I have to put it ...
- 11
3
votes
2
answers
183
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Why is deltaE not used as a measure of error?
I've recently read a few articles pertaining to visual memory. Most of them (e.g. Bays et al., 2009 use the continuous color recall task where they ask participants to recall the color of an object by ...
- 31
3
votes
1
answer
88
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Fit a psychometric function when the maximum is not 100% (not because of lapse)
I found that currently the form of psychometric function assumes that the proportion correct lies between 0.5-1 given the range of stimulus level, but how to fit a psychometric function when the ...
- 245
2
votes
0
answers
43
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Ability to identify an "average" vs a maximum (or minimum)?
I have a hypothesis that humans are better able to identify the largest (or smallest) in a set of objects, compared to their ability to identify an average object, i.e. the one closest to the mean.
...
- 21
3
votes
0
answers
70
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How do different emotional intensity ratings within a condition influence the comparison across different conditions in an event-related fMRI task?
I'm planning an event-related fMRI-experiment to investigate the difference in processing natural and computer-generated expressions. For this, we recorded videos of 4 different actors posing fearful ...
- 51
4
votes
1
answer
292
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How do I stream SMI glasses eye tracker data into MATLAB?
We are planning to use the SMI glasses eye tracker. This eye tracker obtains gaze data and we will use it for pupillometry as a measure of cognitive load.
The only thing I'd like to accomplish is ...
- 20.8k
2
votes
1
answer
108
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What is the cause of differences that are too small to see?
Consider two identical pieces of paper.
Scenario 1: On both something is drawn in black ink. If the difference between the areas covered in black ink is sufficiently small, I cannot see the ...
- 121
5
votes
1
answer
163
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Binocular rivalry in animals?
Are there any experiments on binocular rivalry in animals? (In humans, brain responses to Rubin's vase are for example well studied.)
- 51
3
votes
1
answer
61
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How can I create a set of comparable symbols of different shapes?
I was thinking about doing a small experiment during university course where participants have to answer a personality quiz and then they have to compare different symbols (like triangles, rectangles ...
- 133