Detect artifacts in continuous data

Scans continuous data for artifacts using amplitude or gradient criteria.

Usage

detectArtifacts(
  x,
  method = c("amplitude", "gradient", "joint"),
  threshold = NULL,
  window_sec = 1
)

Arguments

x

A PhysioExperiment object.

method

Detection method: "amplitude", "gradient", or "joint".

threshold

Detection threshold. If NULL, computed as median + 5 * MAD.

window_sec

Detection window in seconds (default: 1.0).

Value

A data.frame with columns: onset (seconds), offset (seconds), channel (index), type (detection method).

Examples

pe <- PhysioExperiment(
  assays = list(raw = matrix(rnorm(500 * 2), nrow = 500, ncol = 2)),
  samplingRate = 100
)
arts <- detectArtifacts(pe, method = "amplitude")
head(arts)
#>   onset offset channel      type
#> 1  3.36   3.37       1 amplitude