Resamples the RR-interval series uniformly at fs_interp Hz, estimates
a Welch PSD, and integrates VLF (0.003–0.04 Hz), LF (0.04–0.15 Hz),
and HF (0.15–0.40 Hz) bands.
Arguments
- rr
Numeric vector of RR intervals in milliseconds.
- fs_interp
Uniform resampling frequency in Hz (default 4).
Value
List with value (total power), name, and extra
(vlf, lf, hf, lf_hf_ratio, total_power, lf_norm,
hf_norm).
Details
Reference: Task Force (1996), Circulation 93(5):1043–1065.
Examples
# \donttest{
set.seed(1)
rr <- 800 + cumsum(rnorm(200, sd = 20))
res <- hrvfd(rr)
res$extra$lf_hf_ratio
#> [1] 7.459558
# }