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Machine Learning for Analyzing Human Brain Function

  • Tom Mitchell
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3518)

Abstract

A major opportunity for knowledge discovery and data mining over the coming decade is to accelerate scientific discovery by providing new computer tools to analyze experimental data. Scientific fields from astronomy to cell biology to neuroscience now collect experimental data sets that are huge when compared to the data sets available just a decade ago. New data mining tools are needed to interpret these new data sets.

This talk presents our own research in one such scientific subfield: studying the operation of the human brain using functional Magnetic Resonance Imaging (fMRI). A typical fMRI experiment captures three-dimensional images of human brain activity, once per second, at a spatial resolution of a few millimeters, providing a 3D movie of brain activity. We present our recent research exploring the question of how best to analyze fMRI data to study human cognitive processes. We will first describe our recent successes training machine learning classifiers to distinguish cognitive subprocesses based on observed fMRI images. For example, we have been able to train classifiers to discriminate whether a person is reading words about tools, or words about buildings, based on their observed fMRI brain activation. We will then introduce an algorithm for learning a new class of probabilistic time series models called Hidden Process Models, and discuss their use for tracking multiple hidden cognitive processes from observed fMRI brain image data.

Keywords

Scientific Field Functional Magnetic Resonance Image Human Cognitive Process Data Mining Tool Human Brain Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Tom Mitchell
    • 1
  1. 1.Center for Automated Learning and DiscoveryCarnegie Mellon UniversityUSA

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