Hi Evryone, Im using a windows 10 and psychopy 3 to create a lexical decision task. the task is done, and Im just adding the triggers and serial port. The USB serial port I’m using is this one [image] and I download the driver that was on the Biosemi web page. This port is recognized in my compu…

ok, so for my practice trial I have this code, [image] [image] [image] [image] and for the test part, the code is the same, except that i didn’t include anything in the begin experiment, and end experiment. I need to replicate that code for 4 different loops that I have

hey, so I managed to make it work, but my triggers at the moment of filter the data in eeglab look like this [image] [image] So basically this means that the trigger are not recognize as different triggers?

Hi There, Pleased to see you are making progress so far! I think this is still because you have the same trigger being sent in the each frame tab port.write(b'1') What happens if you set the code to be the same as that in the Begin Routine tab? (i.e. using the trigger variable)? Also, so you real…

Hi Becca, So if I write port.write(trigger) in the begin rutine and in each frame tab, it doesn’t mark anything. it doesn’t even send the triggers. But when I had port.write(b’1’) I was getting something like this [image] I have tried adding something like port.write(b’1’) port.write(b’2’) …

Hi Becca, So my guess about what’s going wrong is that either it’s sending too many triggers, I only need 2 or it’s sending them at the right time but leaving the port open too long. I need the port to be open just for 2 seconds. So because this is an experiment for kids, I have the stimuli presen…

so that needs to be where? because if I take the “each frame” it doesn’t send any triggers, so there must be something wrong in that part.

OK to clarify, if you only have one trigger sent in the begin routine tab that doesn’t send?

ok, so far this is what I have begin experiment import serial port = serial.Serial(“COM3”, baudrate = 115200) begin routine port.write(trigger) port.write(b’1’) each frame port.write(trigger) I have three different loops, each of them with a fixation cross, testing and blank. [image] So …

triggers are synched to the stimulus presented. As soon as the stimulus appears, the trigger appears and as soon as the correct key is press, it disappears. Also, it stays for the same amount of time as the stim, so 3 seconds. I need this to be 2 seconds

Serial Port EEGbiosemi

Builder

Becca May 18, 2021, 5:33pm 13

Hi There,

Have you tried flushing the port like this? Triggering from Serial port - #2 by mdc

Becca

Topic		Replies	Views
Sending multiple triggers in one routine using serial port Builder	24	5024	June 15, 2023
Triggers not appearing on actiview serial port Builder timing	7	2977	August 19, 2019
Sending markers to EEG through serial port Blog	14	8991	May 23, 2026
Sending triggers to EEG via Brain Vision Triggerbox by using the serial Port Component Builder eeg	4	2683	September 7, 2023
Sending triggers to brainvision EEG system from Psychopy coderview Coding	12	9094	September 20, 2023

Serial Port EEGbiosemi

Related topics