Acute Stress and Electroencephalography in Adult Men: A Systematic Review
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Abstract
Stress is considered a central issue in daily life due to the various comorbidities associated, the physiological response and homeostatic processes triggered by it in the human body. The stress response modifies the central nervous system dynamics, including the cerebral cortex, which is why it can be evaluated with an electroencephalogram (EEG). However, it is necessary to evaluate the quality of the evidence in this kind of research. A systematic review was carried out in the PubMed, Scielo and Scopus databases of the last eight years, with the aim to identify differences or similarities in the procedures, results and implications of the studies that focus on studying acute stress in adult men through EEG. The reports of 18 selected articles were examined, which had sample sizes of 9 to 80 participants, of which 84.2% were men and 15.8% women. The characteristics and parameters of the EEG were also reviewed, as well as the calculation models and interpretation of its data. The results indicate that the absolute power, amplitude, symmetry, and connectivity of the beta and alpha frequency bands are especially reactive under stressful conditions. Support vector machine classification is a promising method for processing EEG data, but its reporting requires complementary evidence to support the evaluation of its performance. It is necessary to continue advancing in these investigations to confirm or rule out aspects of the studies and their relevance.
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