Anxiety and EEG Frontal Theta-Beta Ratio Relationship Analysis Across Personality Traits During HDR Affective Videos Experience

To comprehend the intricate interplay between the frontal regions of the brain, anxiety, and their connection with individual personality traits holds promising potential for developing contemporary, personality-aware interventions in anxiety healthcare design. Traditionally, emotional content with low dynamic range has been employed for anxiety assessment, with personality traits serving as mediators. This paper introduces a novel approach, examining the influence of personality traits on the relationship between anxiety and electroencephalography (EEG) frontal Theta-Beta Ratio (TBR) during high dynamic range (HDR) arousal-valence affective content exposures. Twenty-seven subjects were categorized into five groups based on big five personality scores, further subdivided into high and low personality traits. Correlation analyses were conducted separately for the right and left frontal regions. Across four HDR video clips, each positioned within a distinct valence-arousal plane, it was observed that for High Arousal High Valence (HAHV) and High Arousal Low Valence (HALV), most personality trait groups exhibited a negative correlation between anxiety and frontal TBR, while a positive correlation was noted for Low Arousal Low Valence (LALV) and Low Arousal High Valence (LAHV) HDR emotional content. The findings indicate that the big five personality traits are the pivotal intermediate psychological factors affecting alterations in brain activity and anxiety.