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• W4313561629 abstract "Discrimination of pain intensity using machine learning (ML) and electroencephalography (EEG) has significant potential for clinical applications, especially in scenarios where self-report is unsuitable. However, existing research is limited due to a lack of external validation (assessing performance using novel data). We aimed for the first external validation study for pain intensity classification with EEG. Pneumatic pressure stimuli were delivered to the fingernail bed at high and low pain intensities during two independent EEG experiments with healthy participants. Study one (n = 25) was utilised for training and cross-validation. Study two (n = 15) was used for external validation one (identical stimulation parameters to study one) and external validation two (new stimulation parameters). Time-frequency features of peri-stimulus EEG were computed on a single-trial basis for all electrodes. ML training and analysis were performed on a subset of features, identified through feature selection, which were distributed across scalp electrodes and included frontal, central, and parietal regions. Results demonstrated that ML models outperformed chance. The Random Forest (RF) achieved the greatest accuracies of 73.18, 68.32 and 60.42% for cross-validation, external validation one and two, respectively. Importantly, this research is the first to externally validate ML and EEG for the classification of intensity during experimental pain, demonstrating promising performance which generalises to novel samples and paradigms. These findings offer the most rigorous estimates of ML's clinical potential for pain classification." @default.
• W4313561629 created "2023-01-06" @default.
• W4313561629 creator A5015520139 @default.
• W4313561629 creator A5023631781 @default.
• W4313561629 creator A5027745647 @default.
• W4313561629 creator A5032629783 @default.
• W4313561629 creator A5034060653 @default.
• W4313561629 creator A5068728622 @default.
• W4313561629 creator A5074881187 @default.
• W4313561629 date "2023-01-05" @default.
• W4313561629 modified "2023-10-02" @default.
• W4313561629 title "External validation of binary machine learning models for pain intensity perception classification from EEG in healthy individuals" @default.
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