gen_hrf_blocked: Generate a Blocked HRF Function

In bbuchsbaum/fmrireg: R package for the anlysis of fmri data

Generate a Blocked HRF Function

Description

The gen_hrf_blocked function creates a blocked HRF by convolving the input HRF with a boxcar function. This can be used to model block designs in fMRI analysis.

Usage

gen_hrf_blocked(
  hrf = hrf_gaussian,
  width = 5,
  precision = 0.1,
  half_life = Inf,
  summate = TRUE,
  normalize = FALSE,
  ...
)

hrf_blocked(
  hrf = hrf_gaussian,
  width = 5,
  precision = 0.1,
  half_life = Inf,
  summate = TRUE,
  normalize = FALSE,
  ...
)

Arguments

hrf	A function representing the hemodynamic response function. Default is hrf_gaussian.
width	A numeric value specifying the width of the block in seconds. Default is 5.
precision	A numeric value specifying the sampling resolution in seconds. Default is 0.1.
half_life	A numeric value specifying the half-life of the exponential decay function, used to model response attenuation. Default is Inf, which means no decay.
summate	A logical value indicating whether to allow each impulse response function to "add" up. Default is TRUE.
normalize	A logical value indicating whether to rescale the output so that the peak of the output is 1. Default is FALSE.
...	Extra arguments passed to the HRF function.

Value

A function representing the blocked HRF.

A function representing the blocked HRF.

Functions

• hrf_blocked(): alias for gen_hrf_blocked

See Also

Other gen_hrf: gen_hrf_lagged(), gen_hrf_set()

bbuchsbaum/fmrireg documentation built on March 1, 2025, 11:20 a.m.