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The relationship between HRV and Alpha Power

Koop, Bram (2023) The relationship between HRV and Alpha Power. Bachelor's Thesis, Artificial Intelligence.

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A part of Major Depressive Disorder (MDD) is Perseverative Cognition (PC): repetitive thinking about stressful past or fearful future events. PC can initiate a peripheral stress response in the body, causing a higher Heart Rate and lower Heart Rate Variability (HRV). HRV measures the intervals between heartbeats and derives from the dynamic control of the Autonomic Nervous System (ANS). Several brain regions are part of the ANS, such as the hippocampus and the amygdala. This study investigated the relationship between HRV, and the most dominant brain activity, alpha power, using electroencephalography (EEG) and electrocardiography (ECG). EEG and ECG signals were acquired simultaneously. Hypothesized was a positive linear relationship between HRV and alpha power. Participants included 23 remitted MDD (RMDD) patients and 23 healthy controls (HC). EEG and ECG signals were recorded during an eyes-closed resting state period. HRV was then calculated using the ECG signal. Re- sults showed no group difference in HRV and a higher alpha power in RMDD subjects than in HC subjects. Moreover, a weak positive correlation was found between HRV and alpha power in both groups. Alpha power was especially active in the parieto-occipital region of the brain, which also showed a weak positive correlation with HRV. This demonstrates that people with RMDD have a higher cognitive load, which can be a predictor of MDD.

Item Type: Thesis (Bachelor's Thesis)
Supervisor name: Vugt, M.K. van and Besten, M.E.
Degree programme: Artificial Intelligence
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 28 Feb 2023 10:00
Last Modified: 28 Feb 2023 10:00

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