1st Level Analysis 2: Basis functions, parametric modulation and correlated regressors
You can download a copy of Gayaneh and Oriel's talks here: BasisFunctions.ppt ParametricMod.ppt
Web Resources
Below is a list of web resources used in the talk
Basis Functions
Fourier Series Tutorial
Animated illustration of the convolution of two functions
The convolution theorem and its applications
A link to all the chapters of the Human Brain Function
Rik's SPM GLM powperpoint from our imaging wiki SPM.ppt
Correlated regressors
Design Magic toolbox- Multicollinearity assessment for fMRI for SPM
References
Basis Functions
Human Brain Function, Academic press, 2nd edition, 2003 (Chapter 10)
Functional Magnetic Resonance Imaging (Scott A Huttel et al.)
R.N.A. Henson, M.D. Rugg, and K.J. Friston. (2001) The choice of basis functions in event-related fMRI. NeuroImage, 13(6):149, Note: Supplement 1
PDF of paper
Dale.pdf Selective Averaging of Rapidly Presented Individual Trials Using fMRI
Josephs.pdf Event-Related fMRI
Friston.pdf Event-Related fMRI: Characterizing Differential Responses
Friston2.pdf Nonlinear Event-Related Responses in fMRI
Parametric regressors
Characterizing stimulus-response function using nonlinear regressors in parametric fMRI experiments’, Buchel et al, Neuroimage, 1998
Using parametric regressors to disentangle properties of multi-feature processes’, Wood et al, Behavioural and Brain Functions, 2008 doi:10.1186/1744-9081-4-38
Link to paper