strange artifact across all sites in EEG
Posted: Tue Sep 12, 2023 2:40 pm
Hello, I wondered if anyone could help me identify the source of the EEG artifact shown in the attached image . Appears across all sites and continued throughout the recording session. (64 channel system, R-hemi electrodes + EXG shown in image, but occurred on L-hemi also)
I hadn't seen it before this participant or since in subsequent data recordings.
For this person in shielded booth, lights were off, phone non-transmit, no jewelry, watch off, wasn't touching anything electrical that I could see. Offsets looked good, was wearing glasses. I haven't seen for other people in the same set-up. Ideas??? I will see if I can correct this with typical filtering, but ideally I would like to prevent recording it in the first place in future people if I can better understand where it's coming from.
Thanks!
~Jill
I hadn't seen it before this participant or since in subsequent data recordings.
For this person in shielded booth, lights were off, phone non-transmit, no jewelry, watch off, wasn't touching anything electrical that I could see. Offsets looked good, was wearing glasses. I haven't seen for other people in the same set-up. Ideas??? I will see if I can correct this with typical filtering, but ideally I would like to prevent recording it in the first place in future people if I can better understand where it's coming from.
Thanks!
~Jill