Word and colour are the names of my variables (in the. In the section called # *text* updates, write: # Send LSL Marker : word and its colour as string If you are using only one screen, to see the console output during the experiment, you must change in section # - Setup the Window -, fullscreen= False instead of True. I am printing in the console of PsychoPy for debugging but you can comment it. Outlet.push_sample() # Push event marker. In the code you will find a section called # *response* updates, write: # Send LSL Marker : Response as string Now, you want to send a marker whenever a word appears on the screen, and whenever the user responds with a keyboard press. LSL will automatically associate timestamps for each marker’s appearance. If in some cases you wish to send numbers then instead of “string” write “int32” or “float32”. We are sending each word as a “string” of letters the participant is seeing on screen. If you want to send continuous data, the nominal_sampling rate should change from 0 (irregular sampling rate) to some regular value.
#Psychopy tutorial install
Obviously, you need to install pylsl (pip install pylsl) in order to make this code (LSL) work. Outlet = StreamOutlet(info) # Broadcast the stream. Info = StreamInfo(name='PsychoPy_LSL', type='Markers', channel_count=1, nominal_srate=0, channel_format='string', source_id='psy_marker') Then open the Coder window and add at the end of section called # - Import packages -: from pylsl import StreamInfo, StreamOutlet Open or Create your experiment in the Builder (example from tutorial above), then compile to Python script. In Stroop, words are appearing one after the other in different colors, e.g., RED then RED, the participant should note the color of the word ignoring the word itself. Let’s take a well-known Stroop experiment, follow this tutorial: Build your first PsychoPy experiment (Stroop task)
#Psychopy tutorial how to
In this blog, we will explain how to precisely send triggers with PsychoPy and mobile EEG using Smarting PRO for this specific example.
If you wish to keep track of the time each stimulus appears in PsychoPy during your experiment, and align each of them to your EEG recording, you would need to automatically send triggers each time a stimulus appears.
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