spm12_condition: Build Conditions for SPM12 first level model

In spm12r: Wrapper Functions for 'SPM' (Statistical Parametric Mapping) Version 12 from the 'Wellcome' Trust Centre for 'Neuroimaging'

Description

Build Conditions for SPM12 first level model

Usage

spm12_condition(
  name,
  onset,
  duration,
  time_mod_order = 0,
  param_mod = NULL,
  orth = TRUE
)

spm12_condition_list(cond)

Arguments

name	Name of the condition
onset	vector of onset of the condition
duration	vector of duration of the condition, must be the same length as onset
time_mod_order	time modulation order. This option allows for the characterization of linear or nonlinear time effects. Zero means no modulation
param_mod	parametric modulation. Not currently supported in spm12r
orth	Orthogonalize the regressors within trial types.
cond	List of conditions

Value

A list of objects, each with a name, onset, duration, and other condition values.

Examples

res = spm12_condition(
name = "condition1", 
onset = c(0, 2, 4, 6, 8),
duration = rep(1, 5) )
print(res)
L = list(
cond1 = list(onset = c(0, 2, 4, 6, 8), duration = rep(1, 5)), 
cond2 = list(onset = c(0, 2, 4, 6, 8) + 1, duration = rep(1, 5))
)
res = spm12_condition_list(L)
print(res) 

Example output

$name
[1] "'condition1'"

$onset
[1] "[0, 2, 4, 6, 8];"

$duration
[1] "[1, 1, 1, 1, 1];"

$tmod
[1] 0

$pmod
[1] "struct('name', {}, 'param', {}, 'poly', {})"

$orth
[1] 1

$`(1)`
$`(1)`$name
[1] "'cond1'"

$`(1)`$onset
[1] "[0, 2, 4, 6, 8];"

$`(1)`$duration
[1] "[1, 1, 1, 1, 1];"

$`(1)`$tmod
[1] 0

$`(1)`$pmod
[1] "struct('name', {}, 'param', {}, 'poly', {})"

$`(1)`$orth
[1] 1


$`(2)`
$`(2)`$name
[1] "'cond2'"

$`(2)`$onset
[1] "[1, 3, 5, 7, 9];"

$`(2)`$duration
[1] "[1, 1, 1, 1, 1];"

$`(2)`$tmod
[1] 0

$`(2)`$pmod
[1] "struct('name', {}, 'param', {}, 'poly', {})"

$`(2)`$orth
[1] 1

spm12r documentation built on March 4, 2021, 9:11 a.m.