4.2 Article

A Class Activation Map-Based Interpretable Transfer Learning Model for Automated Detection of ADHD from fMRI Data

Journal

CLINICAL EEG AND NEUROSCIENCE
Volume 54, Issue 2, Pages 151-159

Publisher

SAGE PUBLICATIONS INC
DOI: 10.1177/15500594221122699

Keywords

attention deficit hyperactivity disorder; functional magnetic resonance imaging; convolutional neural network; transfer learning; class activation maps

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Automatic detection of ADHD based on fMRI using Deep Learning addresses the curse of-dimensionality problem and provides a robust solution. A transfer learning approach using ResNet-50 CNN achieved a classification accuracy of 93.45%, and Class Activation Map analysis revealed differences in brain regions between ADHD and healthy children.
Automatic detection of Attention Deficit Hyperactivity Disorder (ADHD) based on the functional Magnetic Resonance Imaging (fMRI) through Deep Learning (DL) is becoming a quite useful methodology due to the curse of-dimensionality problem of the data is solved. Also, this method proposes an invasive and robust solution to the variances in data acquisition and class distribution imbalances. In this paper, a transfer learning approach, specifically ResNet-50 type pre-trained 2D-Convolutional Neural Network (CNN) was used to automatically classify ADHD and healthy children. The results demonstrated that ResNet-50 architecture with 10-k cross-validation (CV) achieves an overall classification accuracy of 93.45%. The interpretation of the results was done via the Class Activation Map (CAM) analysis which showed that children with ADHD differed from controls in a wide range of brain areas including frontal, parietal and temporal lobes.

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