I'm trying to use virtual serial ports to configure the markers from my EPrime paradigm to EmotivPRO (the data recording application of the Emotiv EPOC headset). However, after configuring the virtual ports on both systems and making sure the respective COM ports are selected in EPrime and EmotivPRO, the latter still doesn't show the markers. Help?
Hi,
You should check first your virtual serial ports setting then test like as close and open all port. Also, check you experiment paradigm. I had experienced with parallel port setting with presentation software with presentation software. We used write_codes=true; command to transfer event marker from experiment design to Nuamps ( NeuroScan).
I have a side question please, does the serial port is accurate to triger EEG without delay? just like parallel port
Hi,
This is the reply I received from their customer care:
Speaking only about the EEG data, within the headset (before transmission) the latecy is one sample. In fact we record at 8x the transmission rate of 128Hz, so the data packet is sent no more than 1.125 samples after the actual event. After transmission, the latency depends on the receiving computer. Typically the data is buffered in groups of 4 samples so at worst the displayed signal is
Hansika Kapoor Hello, how did you solved the marker problem on emotiv software?
Hi - I connected the two systems through serial ports and the markers showed up!
Hi,Kapoor. I suffered the same problem. And i would like to know how you solve this problem (get the maker) in detail? EmoTiv pro and Eprime were used for my experiment.
Need i must the two computer (system) and serial ports (connect the two computers) to acheive this function?
Thanks very much!!