Poster C22, Sunday, March 26, 5:00 – 7:00 pm, Pacific Concourse
Inverse EEG Theta Peak Frequency Oscillation in Frontal- and Parietal-midlines Predicts Lower Cognitive Control and Working Memory in Individuals with High Trait Anxiety
Salahadin Lotfi1, Kenneth Bennett1, Maryam Ayazi1, Erin Peterson1, Shannon Cavanaugh1, Christine Larson1, Hanjoo Lee1; 1University of Wisconsin-Milwaukee
Anxiety is often associated with impaired cognitive function and an excessive allocation of attentional resources toward threat-related stimuli. This dysfunctional allocation allows unnecessary threat-related information to enter working memory (WM), maintaining irrelevant anxious cognitions and consuming cognitive resources which in turn interferes with ongoing behavior. Recent evidence also shows that cognitive control (CC) is a critical component of WM capacity. Strong CC enables individuals to filter out irrelevant information during cognitive tasks. CC has been linked to electroencephalogram theta peak frequency (TPF) in Frontal-midline region such that lower TPF is indicative of higher CC. In contrast, higher TPF in Parietal-midline region is also associated with higher WM performance. The main purpose of study is to investigate the association between CC, WM and TPF in Frontal-midline and Parietal-midline regions of individuals with high trait anxiety. EEG recordings were collected from a sample of undergraduate students (N=27) who scored 44 or above on the STAI-Trait Anxiety Inventory. Results revealed a significant negative correlation between TPF of Frontal-midline and a negative stimuli selectivity bias in an emotional Stroop task(r= -0.394). Results also indicate a significant negative correlation between TPF of Parietal-midline and WM performance (r=-0.425). Moreover, there were also significant negative correlations between TPF of Frontal-midline and three measures of stress, anxiety, and rumination(r=-0.533 & -0.482). These data suggest that TPF in Frontal-midline and Parietal-midline regions may be neural markers predicting impaired negativity-related cognitive control and low working memory performance in trait anxious individuals, further supporting the relationship between CC, WM, and anxiety.
Topic Area: EMOTION & SOCIAL: Emotion-cognition interactions