JSM 2005 Online Program

Abstract #304052

This is the preliminary program for the 2005 Joint Statistical Meetings in Minneapolis, Minnesota. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 7-10, 2005); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

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Activity Number:	131
Type:	Topic Contributed
Date/Time:	Monday, August 8, 2005 : 10:30 AM to 12:20 PM
Sponsor:	Biometrics Section
Abstract - #304052
Title:	Modeling Spatial Correlations in Functional Neuroimaging Data
Author(s):	F. DuBois Bowman*+
Companies:	Emory University
Address:	Department of Biostatistics, Atlanta, GA, 30322, United States
Keywords:	PET ; fMRI ; Volume of interest
Abstract:	Functional neuroimaging explores associations between spatially localized brain regions and particular experimental tasks targeting, for example, cognition, emotion, or behavior. Data produced by functional neuroimaging studies exhibit complex spatial and temporal correlation patterns. Temporal correlations often are addressed using variants of autoregressive models or other repeated measures covariance structures. Attempts to incorporate spatial correlations frequently involve pooling information from contiguous voxels (spatial locations) in the brain. In this talk, we explore methods for modeling the spatial correlations in neuroimaging data that extend beyond first-order neighbors while also capturing temporal correlations across repeated observations. We illustrate our methods using data from a positron emission tomography study.

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