pupil_activity_index: Compute a transparent pupil activity index

In eyeprocess: Harmonize Eye-Tracking, Pupillometry, Biometrics, and Psychometric Process Data

Compute a transparent pupil activity index

Description

Compute a transparent pupil activity index

Usage

pupil_activity_index(
  y,
  time_ms = seq_along(y),
  sampling_rate_hz = NULL,
  method = c("velocity", "frequency_contrast", "ripa_proxy"),
  low_band = c(0.05, 0.5),
  high_band = c(0.5, 4),
  fast_window_ms = 250,
  slow_window_ms = 750
)

Arguments

y	Pupil signal.
time_ms	Time vector.
sampling_rate_hz	Sampling rate for frequency methods.
method	'velocity', 'frequency_contrast', or 'ripa_proxy'.
low_band, high_band	Frequency bands for frequency contrast.
fast_window_ms, slow_window_ms	Smoothing windows for the RIPA-style proxy.

Value

A numeric value or vector containing a transparent pupil activity index.

eyeprocess documentation built on Sept. 28, 2026, 5:08 p.m.