... | ... | @@ -97,14 +97,16 @@ State the sampling rate of the system that you used. ESS capsules will find this |
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**NotEEG_chans**
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These are the channel indices that do not contain EEG information. ESS capsules denote this information by specifying the channel *Type* as something other than *EEG*, such as *Noise* indicating unplugged channels. ESS will automatically remove these channels, but if you are using config you will have to specify these. For example our lab never uses the EXG8 channel of our BioSemi, this corresponds to using ```[NotEEG_chans],[140]``` to remove the very last channel. This item is one of the few that does not contain a backup GUI as an empty config is a acceptable answer. The default will remove no channels.
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These are the channel indices that do not contain EEG information this includes unplugged channels **not including fiducials**. ESS will by default not load any channels that do not contain EEG, but if you are using config you will have to specify these. For example our lab never uses the EXG8 channel of our BioSemi, this corresponds to using ```[NotEEG_chans],[140]``` to remove the very last channel. This item is one of the few that does not contain a backup GUI as an empty config is a acceptable answer. The default will remove no channels.
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Note that the channels that are purged are: **NotEEG_chans + Fid_chans(see below)**, so channels should only be included in one or the other.
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# Warping Variables
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**Fid_chans**
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This item is very similar to **NotEEG_chans** but the indices you are listing in this case are the fiducials. ESS capsules denote this information by specifying the channel *Type* as *FID*. ESS will automatically use witih the warping and remove these channels from EEG.data, but if you are using config you will have to specify these. For example our lab never uses the LPA,NZ and RPA fiducials recorded as the first three, using```[Fid_chans],[1 2 3]``` to set these as the landmarks for warping and then removing them from EEG.data afterwards. If you leave config empty the following GUI will be displayed. Simply type in a indices of the channels, you do not have to do [ ] brackets.
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This item is very similar to **NotEEG_chans** but the indices you are listing in this case are the fiducials. ESS capsules denote this information by specifying the channel *Type* as *FID*. ESS will automatically use these when warping , but if you are using config you will have to specify these. For example our lab never uses the LPA,NZ and RPA fiducials recorded as the first three, using```[Fid_chans],[1 2 3]``` to set these as the landmarks for warping and then removing them from EEG.data afterwards. If you leave config empty the following GUI will be displayed. Simply type in a indices of the channels, you do not have to do [ ] brackets.
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![fids](/uploads/bc2b77cfce9682a2f667151421c71670/fids.png)
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