gammaHRF {neuRosim}

Single Gamma Haemodynamic response function.

Description

Specifies a Gamma variate haemodynamic response function for the given time vector and FWHM.

Usage

gammaHRF(x, FWHM = 4, verbose = TRUE)

Arguments

x

Time vector in seconds.

FWHM

Full Width Half Maximum of the Gamma variate function.

verbose

If TRUE, warnings are displayed.

Value

Vector representing the values of the function for the given time vector and FWHM.

Author(s)

M. Welvaert

References

Buxton, RB, Uludag, K, Dubowitz, DJ and Liu, TT (2004). Modeling the hemodynamic response to brain activation. NeuroImage, 23, S220-S233.

See Also

canonicalHRF, balloon

Examples

t <- 1:100
out <- gammaHRF(t, verbose=FALSE)