Create EEG with Sleep Stage Characteristics

Generates continuous EEG with segments having distinct frequency content matching AASM sleep stages: Wake (alpha), N1 (theta), N2 (spindles + K), N3 (delta/SWA), REM (mixed low-voltage). Each 30-second epoch is assigned a stage in a cyclic pattern.

Usage

make_eeg_sleep(n_time = 150000, n_channels = 2, sr = 500)

Arguments

n_time

Number of time points (default: 150000 = 5min at 500Hz).

n_channels

Number of channels (default: 2, C3 and C4).

sr

Sampling rate in Hz (default: 500).

Value

A PhysioExperiment with simulated sleep EEG in the "raw" assay. Sets metadata(x)$sleep_stages with a data.frame containing columns: epoch, stage (ground truth), start_sample, and end_sample.

See also

make_eeg(), eegSleepStage(), eegSpindleDetect(), eegKcomplexDetect(), eegSleepMetrics()

Examples

pe <- make_eeg_sleep(n_time = 30000, n_channels = 2, sr = 500)
dim(SummarizedExperiment::assay(pe, "raw"))  # 30000 x 2
#> [1] 30000     2