Analyzing cognitive processes from complex neuro-physiologically based data: some lessons

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In the past few years, due to their ability to extract multivariate correlations, machine learning tools have become more and more important for discovery of information in very complex data sets. This has had specific application to various data sets related to human brain tasks. However, this is far from a simple and direct methodology. Some of the issues involve dealing with the extreme signal to noise ratios, as well as variation between different individuals. Moreover, the huge amount of features relative to the number of data points is a challenge. As a result, in attacking these problems, we found it necessary to adapt a large variety of methodologies; chosen to overcome specific obstructions for specific problems. In this paper, we describe our experience working on several examples at the edge of capabilities of these systems and describe the various and variant methodologies we needed to overcome these sort of challenges. Hopefully these cases will serve as a guideline for other applications.

Original languageEnglish
Pages (from-to)1125-1153
Number of pages29
JournalAnnals of Mathematics and Artificial Intelligence
Issue number11-12
StatePublished - 1 Dec 2020


  • Analysis of cognitive processes
  • Brain correlates
  • Classification
  • Feature selection
  • Machine learning


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