Cluster sizes in interleaved silent steady state (ISSS) imaging.

Kwaku Akrofi, Brad Sutton, Cheng Ouyang, Fatima T Husain

Research output: Contribution to journalArticle

Abstract

The effect of increasing the number of scans in the "cluster" of an interleaved silent steady state (ISSS) fMRI imaging scheme from 1 to 2, and then to 3 was examined by a fixed-effects analysis of an auditory short-term memory task with four subjects. Compared to a cluster size of 1, a cluster of 2 scans improved sensitivity at detecting brain activity and statistical power, while a cluster of 3 scans further improved statistical power but seemed not to improve sensitivity beyond that achieved with a cluster of 2 scans. The findings reveal that cluster size is a vital parameter for an ISSS imaging scheme.

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Short-Term Memory
Magnetic Resonance Imaging
Imaging techniques
Brain
Data storage equipment

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Cite this

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