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Generate a Blocked HRF Function

Source: R/hrf.R
gen_hrf_blocked.Rd

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.

Functions

  • hrf_blocked(): alias for gen_hrf_blocked

See also

Other gen_hrf: gen_hrf_lagged(), gen_hrf_library(), gen_hrf_set()