Automated classification of discrete human thoughts using functional magnetic resonance imaging (fMRI): Comparison between voxel-based and atlas-based feature selection methods

Jong Hwan Lee, Jung Hoe Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It has been reported that human thoughts processes of sensory-motor functions as well as high level of cognitive processes may be highly reproducible between multiple trials as measured via functional MRI data. This trend of the reproducibility seems consistent between multiple subjects as well. We have also presented in our earlier study that six distinct thought processes were shown highly consistent spatial patterns of activations as evaluated from automated classification performance. In the present study, this automated classification performance was compared depending on the feature vector selection methods. A general linear model (GLM) was adopted to define a neuronal activity and voxel-based or atlas-based approaches were adopted as feature vector selection methods. The classification results showed superior performance from the voxel-based feature selection method than the atlas-based method. Nonetheless, when multiple atlases were used to defined feature vector elements, the resulting performance was comparable to that of the voxel-based method with greatly reduced computational time.

Original languageEnglish
Title of host publicationProceedings - International Workshop on Pattern Recognition in NeuroImaging, PRNI 2011
Pages13-16
Number of pages4
DOIs
Publication statusPublished - 2011
EventInternational Workshop on Pattern Recognition in NeuroImaging, PRNI 2011 - Seoul, Korea, Republic of
Duration: 2011 May 162011 May 18

Publication series

NameProceedings - International Workshop on Pattern Recognition in NeuroImaging, PRNI 2011

Other

OtherInternational Workshop on Pattern Recognition in NeuroImaging, PRNI 2011
CountryKorea, Republic of
CitySeoul
Period11/5/1611/5/18

Keywords

  • Brain decoding
  • Functional MRI
  • Imagery task
  • Neuroimaging
  • Support vector machine
  • Thought process

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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