Prediction of Dynamic Facial Emotional Expressions Valences Based on Absolute Brainwaves Power in Adolescents: Using Quantitative Electroencephalogram

Adolescent brain development is recognized by changes in the brain structure and functions. Emotional processing could be affected by these brain changes. The aim of present study was to predict the dynamic emotional processing valences based on absolute brainwaves power (delta, theta, beta, and alpha bands) of five cortical regions.

The study population was 50 healthy adolescents living in Mashhad, Iran. The Tools included mental state interview, EEG device, and Dynamic Emotional Processing Valences Task.

To predict the valences of facial expressions, one model was extracted for sadness and disgust based on the stepwise regression. The beta band in frontal area (for fear), theta band in frontal and beta in central area (for surprise), and beta band in frontal as well as theta band in frontal cortical regions were extracted.

The hypotheses of predictably of dynamic facial expressions is supported by cortical electrophysiological activities during adolescence, and these cortical activities have a number of differences and similarities in comparison to adulthood. Finally, it is recommended that methods, such as Neurofeedback, could be applied to modulate adolescence emotional problems.