Detect bad channels — detectBadChannels • PhysioPreprocess

Identifies channels with abnormal characteristics.

Usage

detectBadChannels(
  x,
  method = c("zscore", "correlation", "flatline"),
  threshold = NULL
)

Arguments

x: A PhysioExperiment object.
method: Detection method: "zscore", "correlation", or "flatline".
threshold: Threshold for detection (depends on method).

Value

Integer vector of bad channel indices.

Examples

m <- matrix(rnorm(300 * 3), nrow = 300, ncol = 3)
m[, 2] <- m[, 2] * 10  # channel 2 is an amplitude outlier
pe <- PhysioExperiment(assays = list(raw = m), samplingRate = 100)
detectBadChannels(pe, method = "zscore")
#> [1] 2