Search found 4 matches

by apresacc
Fri Dec 17, 2021 3:59 pm
Forum: EEG data analysis
Topic: Gain and offset for physical values
Replies: 4
Views: 5036

Re: Gain and offset for physical values

Thank you so much for your quick and detailed explanation. The small value of the offset that you mention is exactly in line with what I found (a fraction of uV), so it is negligible. I just wanted to have a confirmation from you guys, because I trust your expert opinion. I occasionally use eeglab w...
by apresacc
Thu Dec 16, 2021 6:08 pm
Forum: EEG data analysis
Topic: Gain and offset for physical values
Replies: 4
Views: 5036

Re: Gain and offset for physical values

Thank you for your quick response. I think I might have not explained correctly my question or maybe I misunderstood your answer. Bear with me, so I can be on your same page. So, in my question I was not referring to the DC voltage, which I know is present because the data are not high-passed. I was...
by apresacc
Thu Dec 16, 2021 3:01 am
Forum: EEG data analysis
Topic: Gain and offset for physical values
Replies: 4
Views: 5036

Gain and offset for physical values

Hello, Apologies if this question sounds a bit silly. So I have just realized that when converting the digital data into physical values I was not using the offset. I see that the offset is not mentioned in the page where the structure of the data for Biosemi is described (https://www.biosemi.com/fa...
by apresacc
Wed Nov 25, 2015 6:27 pm
Forum: BioSemi all other topics
Topic: Reading data via TCPIP
Replies: 1
Views: 13021

Reading data via TCPIP

Hello, I am using the matlab code that I found on the website (TcpIpClientMatlabV1) to read EEG data. Everything looks fine with the exception for the amplitude of the data. It seems like the data that I read from TCPIP need to be calibrated. This happens even though I remove the DC component. Is th...