===== 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 [[grants:7t:data|merge7T]]. To avoid adding 64 columns per eeg measure and make pivoting a nightmare, 7TEEG exists in it's own longer format file:

<code>
/Volumes/Hera/Projects/7TBrainMech/scripts/eeg/merge7tEEG.csv
</code>

The code to combine all the files is along side the csv as ''merge7TEEG.R'' and also mirrored on github @ [[https://github.com/LabNeuroCogDevel/7TBrainMech_scripts/tree/master/eeg|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
     * See [[tools:spectralevents|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 [[tools:fooof|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 [[tools:snr|Signal to Noise Ratio (SNR)]]
\\

=== 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