Estimate H-reflex onset latency — hReflexLatency • PhysioNeurophys

Uses the baseline-standard-deviation threshold and persistent-run detector from mepLatency() within an H-reflex-specific search window.

Usage

hReflexLatency(
  x,
  h_window_ms = c(20, 45),
  epoch_start_ms = 0,
  baseline_window_ms = NULL,
  threshold_sd = 3,
  min_consecutive_ms = 1,
  channel = 1,
  assay_name = NULL
)

Arguments

x: A PhysioExperiment with time x channels x trials data.
h_window_ms: H-reflex window relative to the stimulus, in milliseconds.
epoch_start_ms: Time of the first epoch sample relative to the stimulus.
baseline_window_ms: Optional baseline interval. The default uses all pre-stimulus samples.
threshold_sd: Baseline standard-deviation multiplier.
min_consecutive_ms: Required duration of a threshold crossing.
channel: One channel label or 1-based index.
assay_name: Optional assay name.

Value

A data frame containing onset sample and stimulus-relative H-reflex latency for each trial.

Examples

pe <- make_mep(n_trials = 3, mep_latency_ms = 25, seed = 2)
hReflexLatency(pe, epoch_start_ms = -20)
#>   trial channel channel_label onset_sample h_latency_ms
#> 1     1       1          MEP1           NA           NA
#> 2     2       1          MEP1          227         25.2
#> 3     3       1          MEP1          227         25.2