Run the example in the terminal with the following command: python psychopy_stimulus_example. # Show the window (it should be empty, but we need it to record keyboard events) Copy-paste the following text and save it as “psychopy_keyboard_example.py”: # Import modules Now we will run a simple keyboard example script. Then use the terminal to run the file with a command: python psychopy_stimulus_example.py # Show the window after drawing the stimulus Message = visual.TextStim(window, text='Stimulus!') # Refresh/update the window (with the fixation point drawn on) # Prepare a fixation point (we will draw it in the next step)įixation = visual.TextStim(window, text='+') Pitch list - create an array from 1 to 4 repeated for 256 stimuli pitchlist 1,2,3,4 newpitchlist np.repeat(pitchlist,64) random. Open some text editor, e.g., Gedit (on Ubuntu), paste and save the following text to a filename named, e.g.: “psychopy_stimulus_example.py”: # Import modules
Windows is generally not Python friendly, and installing all dependencies and virtual environments can be harder for a beginner even than installing a dual-boot Linux or just getting some old PC and installing Lubuntu there. I don’t recommend beginners using PsychoPy on Windows.
#SHUFFLE PSYCHOPY INSTALL#
Install PsychoPy: sudo pip install psychopy Open a terminal ( 5 Ways to Open a Terminal Console Window Using Ubuntu). Hence, I prepared this basic example featuring: However, it seems that entry-level examples one can find in the web are rather sophisticated. Print(‘The staircase output with pTreshold = ’.PsychoPy is an excellent tool for preparing psychological experiments in Python. Staircase1 = data.QuestHandler(startVal = 0.25, startValSd = 0.15, nTrials = n_trials/2, psyexp file) and use Coder to view and edit it (.py file).
#SHUFFLE PSYCHOPY CODE#
You can compile the code from Builder (a.
#SHUFFLE PSYCHOPY TRIAL#
Builder makes it easy to visualize the structure of your experiment, create trial loops, integrate code components, add keyboard responses, present visual stimuli, etc. And how could I make sure the opacity of the target is adapted in such a way that the accuracy is 70%: what parameters of the QuestHandler define the accuracy, what output of the questhandler should I use (mean, mode or quantile) and is the QuestHandler appropriate for the goal of my script?įrom psychopy import visual, data, event, core, gui It is completely GUI driven and very user friendly. Is it not correct that the pTreshold defines the goal-accuracy and how can I create an accuracy of 70%? The test-script is added below. Weirdly, the staircase output is exactly the same when using different pTresholds. I thought the pTreshold defined the goal-accuracy, however this seems not to be the case: I wrote a short script that uses a fixed response-array to test first the difference in the staircase._nextIntensity with different pTresholds, next with different StartValSds. I wanted to use the QuestHandler implemented in psychopy, however when testing the effects of adapting the pTreshold & StartValSd I ran into some problems. The goal is to make sure participants have an accuracy of 70%. A staircase procedure (using the questhandler) is used to adapt the opacity of the target. A simple description of the experiment is as followed: participants have to detect a small target inside a grating. I am trying to construct my first experiment using the QuestHandler and ran into some problems.
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