BioSemi.nl

Dear all,
in a next future we would perform experiments measuring EEG and posturography in the same time. I was wondering about the synchronization of the EEG and posturography recordings. For now, our posturographic system is able to start through a TTL signal sent vie the stimulation software to the posturographic device. Please could you let me know if a TTL signal is also usable to begin the recording of EEG data with our BIOSEMI ?
Thank you very much in advance,
Best regards,
Harold Mouras

It is possible to start recording with a TTL pulse, see viewtopic.php?f=2&t=711&p=2174 . However, this is not precise enough and not sufficient for synchronization. For synchronization, TTL timing pulses should be sent from BioSemi to posturography (similar to https://www.youtube.com/watch?v=BoYM49sEDlQ ), or the posturography should send pulses to the BioSemi, or a separate clock should send pulses to both systems.

Best regards, Coen (BioSemi)