| 3dREMLfit AFNIÕs New Approach to Dealing with Serial Correlation in FMRI Linear Regression (GLM) |
| Conclusions First |
| 3dDeconvolve and Ordinary Least Squares (OLSQ) |
| A Tiny Amount of Mathematics |
| Mathematical Model for Serial Correlation |
| New Program: 3dREMLfit |
| Rapid Event Related Design (NIH
3 T: JJY) Individual Maps from 17 Subjects |
| Block Design (15 s blocks:
FBIRN-1 SM Task) 1 Individual Map (Subject#106) |
| Block Design (30 s blocks:
NIH 3T; JJY) Individual Maps from 16 Subjects |
| Results Thus Far |
| Block Design: Group Results (3dANOVA3) |
| Event-Related Design: Group Results (3dANOVA3) |
| Tentative Conclusions |
| Outline of SPM and FSL Approaches |
| Using 3dREMLfit - 1 |
| Using 3dREMLfit - 2 |
| Potential Add-ons to 3dREMLfit |
| Serial Correlation Model & Notation: ARMA(1,1) |
| AR(1): a vs. MA(1): b vs. ARMA(1,1): a & b |
| Spectrum (slightly smoothed absFFT) of Residuals |
| Spectrum of Residuals |
| Spectrum of Residuals |
| 6 Types of Analysis |
| Conclusions from Previous Slides |
| Mathematics and Implementation |