Extract FuzzyEn and Lorenz-plot CSI HRV features

Computes fuzzy entropy and Lorenz/Poincare-derived cardiac sympathetic index style descriptors from IBI/RR intervals.

Usage

extract_gazepoint_hrv_fuzzy_csi(
  dat,
  ibi_col = "IBI",
  group_cols = NULL,
  m = 2,
  r_multiplier = 0.2,
  fuzzy_power = 2,
  min_intervals = 10
)

Arguments

dat

A data frame.

ibi_col

Numeric IBI/RR interval column.

group_cols

Optional grouping columns.

m

Embedding dimension.

r_multiplier

Tolerance multiplier applied to within-group SD.

fuzzy_power

Fuzzy exponential power.

min_intervals

Minimum intervals per group.

Value

A list with overview, features, and settings.

Details

These outputs are nonlinear/geometric HRV descriptors. They do not infer seizure status, diagnosis, health status, emotion, stress, or cognition.