WebJun 27, 2024 · I assume this is due to the fact that in adaptive staircase scenario, psychopy doesn’t really read my condition excel file. You’re right, a staircase doesn’t read from a conditions file: it is by its very nature an adaptive technique, and so can’t use a fixed sequence of values. WebApr 6, 2024 · Psi estimates the two free parametersof the psychometric function, the location (alpha) and slope (beta),using Bayes' rule and grid approximation of the posterior …
Psychopy - Build an Adaptive Staircase - Part 1 - YouTube
WebJun 15, 2024 · OS (e.g. Win10): Windows 10 Enterprise PsychoPy version (e.g. 1.84.x): 2024.2.10 What are you trying to achieve?: I’m trying to make a task that will measure the contrast sensitivity to a drifting grating stimulus presented at different spatial frequencies. The contrast of that stimulus should be controlled by a staircase, going 1 db up after one … WebJan 12, 2024 · Hi, I am trying to write a staircase for a visual perception task. From a previous task I will have calculated a participants particular ‘threshold value’/just noticeable difference value (e.g 40ms), and I am trying to write a programme where I can input the participants threshold value at the start, and then the stair case goes up/down in … can i cut 100mg viagra in half
QuestHandler Staircaise with 75% correct threshold - Coding - PsychoPy
WebAug 17, 2024 · In the loop’s Properties interface, when I set Looptype as staircase, there will be several parameters (eg. nReps, start value, max value, N reversals, ect.) to be entered in on the bottom part of the interface. My question is how to set a maximum trials number since there is only an ‘nReps’ , which is used to set the minimum trials number. http://psychopy.readthedocs.io/en/latest/coder/tutorial2.html WebPresented stimulus in psychopy staircase experiment does not change. I just started using Psychopy in order to create my first adaptive staircase experiment. I tried to set up the experiment by using the Builder interface. The loop type I'm using is the staircase, not the interleaved staircase. In the experiment, I would like to change the ... can i cut a fiberglass door