Combined brain topological metrics with machine learning to distinguish essential tremor and tremor-dominant Parkinson’s disease
Neurological Sciences(2024)
Abstract
Essential tremor (ET) and Parkinson’s disease (PD) are the two most prevalent movement disorders, sharing several overlapping tremor clinical features. Although growing evidence pointed out that changes in similar brain network nodes are associated with these two diseases, the brain network topological properties are still not very clear. The combination of graph theory analysis with machine learning (ML) algorithms provides a promising way to reveal the topological pathogenesis in ET and tremor-dominant PD (tPD). Topological metrics were extracted from Resting-state functional images of 86 ET patients, 86 tPD patients, and 86 age- and sex-matched healthy controls (HCs). Three steps were conducted to feature dimensionality reduction and four frequently used classifiers were adopted to discriminate ET, tPD, and HCs. A support vector machine classifier achieved the best classification performance of four classifiers for discriminating ET, tPD, and HCs with 89.0
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Key words
Essential tremor,Tremor-dominant Parkinson’s disease,Graph theory,Multiple thresholds,Machine learning,Resting-state functional magnetic resonance imaging
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