For questions about the quantitative study of varying a stimulus's properties to observe the effect on sensation (and perception)

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10
votes
1answer
45 views

Are staircases more efficient than the method of constant stimuli?

A Bayesian Quest adaptive procedure (Watson and Pelli 1983) is the theoretically most efficient procedure for estimating thresholds under a certain, potentially unrealistic, set of constraints. In my ...
2
votes
1answer
64 views

Do unequal step sizes in staircase procedure affect the convergence?

Consider a psychophysics procedure using a standard staircase method to adaptively find the threshold, using a 2AFC paradigm and a 1-up, 3-down method to determine the 75% threshold. Now suppose the ...
3
votes
1answer
42 views

Optimal number of dimensions in multidimensional scaling

I have run an experiment on consonance-dissonance evaluation of musical intervals on 40 individuals using all the possible intervals from 3 registers (plus their inversions), and I want to apply a ...
2
votes
1answer
40 views

What hardware setup is commonly used for low-latency audio stimulation?

I need to carefully control the latency and timing of auditory stimulation in an upcoming experiment. Some of this depends on software, but my question is specifically relating to hardware, drivers ...
3
votes
1answer
53 views

How can I design a staircase function that converges on a given hit-rate?

I'm in the process of creating a simple contrast staircase function where subjects are initially presented with high-contrast Gabor patches and are subsequently queried as to their orientation in a ...
4
votes
1answer
134 views

Two different values for criterion in signal detection theory?

I'm a signal detection theory newbie. I have data with a classical SDT design: the participants can answer YES or NO to a question where the correct answer is YES or NO, depending on the presence or ...
4
votes
2answers
134 views

Which physical properties of a stimulus can a human attend to?

I am not only curious about speech, but for concreteness in illustrating my question, I consider the case of speech perception. Assume a listener is presented with an acoustic waveform. The wave ...
5
votes
0answers
77 views

How to set up a binocular rivalry experiment, that splits a single image in two separately controlled ones?

The question is about the actual physical setup and steps needed to take in order to experiment with the phenomena. I found a tutorial on jove.com, "How to Create and Use Binocular Rivalry", and it ...
5
votes
4answers
126 views

Introductory material on psychophysics with a focus on visual stimuli

Is there any introductory-level material available on psychophysics that you can recommend to someone without a background in cognitive sciences? Visual stimuli is the main area of interest. Edit: ...
9
votes
3answers
551 views

Math or Physics: Which is the more relevant background to enter Cognitive Sciences and Psychology? [closed]

What would be a more suitable background to enter cognitive sciences, mathematical psychology, and study of emotions? I have the option of taking a Integrated Masters Degree in Mathematical Sciences, ...
5
votes
2answers
241 views

Minimum duration for presenting a visual stimulus on screen

My experiment involves presenting simple visual stimuli briefly on screen (200 ms to 1000 ms). The stimuli would be simple enough (e.g. a circle and a line) but I want to use a range of durations to ...
13
votes
1answer
485 views

What stimulus features determine the psychophysical power law exponent?

Following the work of Stanley Stevens, psychophysical functions of stimulus intensity are commonly assumed to follow power laws, as illustrated below: This appears to be true for a wide variety of ...
6
votes
1answer
74 views

What psychophysical research published its data?

Can you point to published research in psychophysics that made its original* data available? *by 'original' I mean the trial-by-trial responses for each subject, and not some kind of aggregate that ...