Amygdala Changes in Chronic Insomnia and Their Association with Sleep and Anxiety Symptoms: Insight from Shape Analysis

Figure 4

Vector graphs of the right amygdala associated PSQI and SAS scores according to a traditional surface-based vertex correlation analysis displayed by three-dimensional mesh are shown. The color bar indicates the statistical values; as the color changes from red to blue, statistical significance changes from low to high. The small arrows on the surface indicate the direction of association. Inward arrows indicate the PSQI/SAS score was negatively correlated with the regional vertex of the right amygdala. Abbreviations: PSQI: Pittsburgh Sleep Quality Index; SAS: self-rating anxiety scale.