Search found 6 matches

by Kriale00
Tue Jan 14, 2020 9:19 pm
Forum: EEG data analysis
Topic: Quick question about bit 16 (High when new Epoch is started) in trigger status channel
Replies: 1
Views: 8026

Quick question about bit 16 (High when new Epoch is started) in trigger status channel

Hello, I have a quick question about bit 16 (High when new Epoch is started) in trigger status channel. Is there any reason to not read from a bdf file an event that has bit 16 high? I am asking, because I noticed that the eeglab programmers discard any event that has this bit high (usually the firs...
by Kriale00
Fri May 05, 2017 5:50 pm
Forum: BioSemi all other topics
Topic: Offset in the trigger code read by EEGLab
Replies: 6
Views: 17205

Re: Offset in the trigger code read by EEGLab

Understood.

Thank you for your help and your time. I appreciate it.

Alex.
by Kriale00
Thu May 04, 2017 11:18 pm
Forum: BioSemi all other topics
Topic: Offset in the trigger code read by EEGLab
Replies: 6
Views: 17205

Re: Offset in the trigger code read by EEGLab

One last clarification. When I said that the bit sequence that I wrote had a mistake (thanks for pointing that out) was irrelevant, I just wanted to say that it was a typo on my part, but I understand that having the correct sequence is important to identify the trigger lines that are high in Biosem...
by Kriale00
Thu May 04, 2017 7:33 pm
Forum: BioSemi all other topics
Topic: Offset in the trigger code read by EEGLab
Replies: 6
Views: 17205

Re: Offset in the trigger code read by EEGLab

Sorry, I meant to say "when in fact it should be 3840". Apology for this mistake.
by Kriale00
Thu May 04, 2017 7:18 pm
Forum: BioSemi all other topics
Topic: Offset in the trigger code read by EEGLab
Replies: 6
Views: 17205

Re: Offset in the trigger code read by EEGLab

Thank you for your reply. Yes, I made a mistake in the writing the sequence of bits to get 3840, but that is irrelevant to my problem. I used the BDF reader (I didn't know I was supposed to look at the analog display of the trigger to check for problems, but that is my fault as I should have read th...
by Kriale00
Wed May 03, 2017 9:11 pm
Forum: BioSemi all other topics
Topic: Offset in the trigger code read by EEGLab
Replies: 6
Views: 17205

Offset in the trigger code read by EEGLab

Hello, I am using the TDT system to send triggers to Biosemi. I set up the TDT digital port to work with 16 bits, so that should work for biosemi. I also selected all the 16 trigger lines + OR in Biosemi, even though I believe this option really affects only the online average and not what is record...