A parallel independent component analysis approach to investigate genomic influence on brain function

Jingyu Liu, Oguz Demirci, Vince D. Calhoun

Research output: Contribution to journalArticle

Abstract

Relationships between genomic data and functional brain images are of great interest but require new analysis approaches to integrate the high-dimensional data types. This letter presents an extension of a technique called parallel independent component analysis (paraICA), which enables the joint analysis of multiple modalities including interconnections between them. We extend our earlier work by allowing for multiple interconnections and by providing important overfitting controls. Performance was assessed by simulations under different conditions, and indicated reliable results can be extracted by properly balancing overfitting and underfitting. An application to functional magnetic resonance images and single nucleotide polymorphism array produced interesting findings.

Original languageEnglish (US)
Pages (from-to)413-416
Number of pages4
JournalIEEE Signal Processing Letters
Volume15
DOIs
StatePublished - 2008
Externally publishedYes

Keywords

  • Entropy
  • FMRI
  • Genetic association
  • Independent component analysis (ICA)
  • Multimodal process
  • Parallel ICA

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics

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