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
  • 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
  • See Spectral Event Pipeline
• 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 the SNR/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
  • See Signal to Noise Ratio (SNR)

• 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