HRF_calc {hrf} | R Documentation |
Canonical HRF and Derivatives
Description
Calculate the HRF from a time vector and parameters, or its derivative with respect to delay or dispersion.
Usage
HRF_calc(
t,
deriv = 0,
a1 = 6,
b1 = 1,
a2 = 16/6 * a1 * sqrt(b1),
b2 = b1,
c = 1/6,
o = 0
)
Arguments
t |
time vector (in units of seconds) |
deriv |
|
a1 |
delay of response. Default: |
b1 |
response dispersion. Default: |
a2 |
delay of undershoot. Default: |
b2 |
dispersion of undershoot. Default: |
c |
scale of undershoot. Default: |
o |
onset of response. Default: |
Value
HRF vector (or dHRF, or d2HRF) corresponding to time vector t
Examples
samples_per_sec <- 200
nsec <- 50
HRF_calc(seq(nsec*samples_per_sec)/samples_per_sec)
[Package hrf version 0.1.3 Index]