Merge 7T EEG
EEG summary statistics are most appropriately organized by rows of visit+channel, unlikely rows of solely visit in the more general wide-format merge7T. To avoid adding 64 columns per eeg measure and make pivoting a nightmare, 7TEEG exists in it's own longer format file:
/Volumes/Hera/Projects/7TBrainMech/scripts/eeg/merge7tEEG.csv
The code to combine all the files is along side the csv as merge7TEEG.R
and also mirrored on github @ 7TBrainMech_scripts/eeg and includes a less detailed readme file.
Merge 7T EEG combines all EEG data from the 7T grant on a per channel level.
Thus far it is incorporating the spectral event data, FOOOF data, and SNR.
Those files can be found in the following locations within /Volumes/Hera/Projects/7TBrainMech/scripts/eeg/Shane/Results/
spectral events | Spectral_Analysis/Spectral_events_analysis/GammaSpectralEvents_DelayandFix_channelLevel_merge7tEEG_20231110.csv |
fooof | FOOOF/allSubjectsAllChannelsFooofMeasures_20230911.csv |
SNR | SNR/allSubjectsSNR.csv |
Information about each task
- Spectral Events
- Run on the delay and fixation epochs from the MGS task
- Only delay has longitudinal
- The trials are outlier detected for bad trials, based on 2 SDs, and then aggregated together for every channel. This is done in
/Volumes/Hera/Projects/7TBrainMech/scripts/eeg/Shane/Rscripts/attic/DFforMerge_longSpectralEvents.R
- The channel level data is then outlier detected in
merge7TEEG.R
for each subject using 2 SDs
- FOOOF
- Run during resting state
- Has a eyes open and eyes closed condition
- FOOOF is computed on the trial averaged data so there is no outlier detection on the individual trials
- The channels are outliter detected in
merge7TEEG.R
for each subject using 2 SDs - See FOOOF
- SNR
- Run during the auditory steady state task during the 40Hz condition
- Matlab calculates all the SNR measures and creates an individual file for every subject
- These files are taken into
CombineSubjectDataframes.R
which creates theSNR/allSubjectsSNR.csv
that is fed into Merge7tEEG - Note: The data deals with averaged trials and therefore there is no outlier detection on the trial level
- The channels are outliter detected in
merge7TEEG.R
for each subject using 2 SDs
Included Data
- labels: channel labels
- Channel information
- theta, radius: cylindrical coordinates of the electrode
- X, Y, Z: cartesian coordinates of the electrode
- sph_theta, sph_phi, sph_radius: spherical coordinates of the electrode
- ref: average, what the electrodes measures are references to. In this case, the average
- Region: brain region percentages that correspond to the electrode
- BA: corresponding brodmann area
- SNR Measures
- ERSP: Event Related Spectral Perturbation (i.e. evoked activity)
- ITC: Intertrial Coherence (reflects the temporal and spatial synchronization)
- Baseline Power: the power of the baseline period
- Induced: induced or spontaneous activity
- Spectral Event Measures
- Gamma_Trial_Power_Delay, Gamma_Trial_Power_Fix: the average trial power for the gamma band in the delay or fixation epoch
- Gamma_Event_Number_Delay, Gamma_Event_Number_Fix: the average number of events in the gamma band in the delay or fixation epoch
- Gamma_Event_Duration_Delay, Gamma_Event_Duration_Fix: the average duration of events in the gamma band in the delay or fixation epoch
- Gamma_Trial_Power_sd_Delay, Gamma_Trial_Power_sd_Fix: trial variability for trial power for the gamma band in the delay or fixation epoch
- Gamma_Event_Number_sd_Delay, Gamma_Event_Number_sd_Fix: trial variability for number of events in the gamma band in the delay or fixation epoch
- Gamma_Event_Duration_sd_Delay, Gamma_Event_Duration_sd_Fix: trial variability duration of events in the gamma band in the delay or fixation epoch
- FOOOF Mesures
- Offset_eyesClosed: aperiodic offset during the eyes closed condition
- Offset_eyesOpen: aperiodic offset during the eyes open condition
- Exponent_eyesClosed: aperiodic exponent during the eyes closed condition
- Exponent_eyesOpen: aperiodic exponent during the eyes open condition