Extract simple PPG pulse morphology metrics — extract_gazepoint_ppg

Extracts peak-centered pulse morphology metrics from a PPG/BVP signal, including rise time, decay time, half-amplitude width, pulse amplitude, and a simple post-peak notch proxy.

Usage

extract_gazepoint_ppg_morphology(
  data,
  time_col = NULL,
  ppg_col = NULL,
  peaks = NULL,
  min_peak_distance_s = 0.3
)

Arguments

data: PPG data frame.
time_col: Time column.
ppg_col: PPG/BVP signal column.
peaks: Optional peak indices or peak times.
min_peak_distance_s: Minimum distance between automatically detected peaks.

Value

Data frame with one row per pulse peak.