Import EEG-BDF File Question

Discussions
1

Hi all,
I'm sure this would have been discussed elsewhere.

Could someone please point to a tutorial or a discussion elsewhere that explains the difference between "Value, Bit, TTL, RTTL and Ignore" and what "remove DC offset" and "resample recordings" mean when trying to import EEG-BDF data?

Many thanks.

2

Value, Bit, TTL, RTTL and Ignore

Select the process "Events > Read from channel" for a full documentation of these options:
image

Example, reading value "5":

  • Value: Creates an event named "5"
  • Bit: 5=01001 => Create an event "1" and and event "3" (bits 1 and 3 are set)
  • TTL: If the baseline was around 0 => Creates one event
  • RTTL: Might not do anything
  • Ignore: does not read the events

remove DC offset, resample recordings

https://neuroimage.usc.edu/brainstorm/Tutorials/Epoching

Please follow the all introduction tutorials (section Get Started) using the example datasets provided before trying to process your own recordings:
https://neuroimage.usc.edu/brainstorm/Tutorials