Compute Source-Space Band Power

Computes spectral band power for each source from source-estimated EEG data. Requires prior source estimation via eegSourceEstimate.

Usage

eegSourcePower(x, bands = NULL, source_assay = "source")

Arguments

x

A PhysioExperiment object with source estimates.

bands

Named list of frequency bands, each a numeric vector of length 2 (lower, upper Hz). If NULL, uses standard EEG bands: delta (1-4), theta (4-8), alpha (8-13), beta (13-30), gamma (30-50).

source_assay

Name of the assay containing source data (default: "source").

Value

A data.frame with columns:

source_id

Integer source index.

band

Character name of the frequency band.

power

Numeric spectral power in the band.

References

Pascual-Marqui, R. D. (2002). Standardized low-resolution brain electromagnetic tomography (sLORETA). Methods and Findings in Experimental and Clinical Pharmacology, 24(Suppl D), 5-12.

See also

eegSourceEstimate(), eegForwardModel(), eegBeamformer()

Examples

pe <- make_eeg(n_time = 1000, n_channels = 19, sr = 250)
fm <- eegForwardModel(pe, method = "spherical", n_sources = 20)
pe <- eegSourceEstimate(pe, fm, method = "mne")
bp <- eegSourcePower(pe)
head(bp)
#>   source_id  band     power
#> 1         1 delta 905.27188
#> 2         1 theta  92.44628
#> 3         1 alpha 602.26873
#> 4         1  beta 142.02806
#> 5         1 gamma   9.83678
#> 6         2 delta 737.85565