Best Regards, Donald McLaren
=================
D.G. McLaren, Ph.D.
Postdoctoral Research Fellow, GRECC, Bedford VA
Research Fellow, Department of Neurology, Massachusetts General Hospital and
Harvard Medical School
Website:
http://www.martinos.org/~mclarenOffice: (773) 406-2464
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On Mon, May 14, 2012 at 11:16 PM, Chao Suo
<[log in to unmask]> wrote:
Dear SPMers,
My design matrix of these structural images includes four factors:
1,subject
2,effect X
3,effect Y
4, time.
In the matrix, we want to put four main effects (subject, effect X, effect Y, time),interactions of (effect X*time), (effect Y*time) and (effect X*effect Y*time). However, it seems that the the input of interaction is set to be a 1by2 vector. Does that mean that SPM couldn't cope with this interaction of three (or more) factors?
Thanks for your help.
Chao Suo,
PhD Candidate, School of Psychiatry, UNSW, Australia
Brain & Mind Research Institute THE UNIVERSITY OF SYDNEY
Room 401, Level 4, M02K | 100 Mallett St Camperdown | NSW | 2050
T +61 2 9351 0728 | F +61 2 9351 0551
