Trait anxiety is related to an impaired attention model for controllable threat cues: Evidence from ERPs.

Attentional bias to threat cues is maladaptive for individuals with high trait anxiety (HTA), but may become adaptive when the dangers signaled by these cues can be controlled by timely actions. However, it remains unclear how HTA individuals allocate attention to controllable threat cues. The current study examined whether trait anxiety is associated with an impaired attention model for controllable threat cues and explored the related underlying neural mechanisms. A sample of 21 participants with low trait anxiety (LTA) and 21 with HTA completed a modified cued anticipation task which allowed participants to control the appearance of threatening pictures associated with controllable threat cues. Results revealed that HTA individuals had no difference in N1 amplitude among controllable threat cues, uncontrollable threat cues, and neutral cues, while LTA individuals showed the greatest N1 amplitude on controllable cues. HTA individuals also exhibited lower N2 amplitude than LTA individuals. The current study provides electrophysiological evidence showing that HTA individuals have impaired attention for processing controllable threat cues and weak inhibitory control. Deficient attention to controllable threat cues may be crucial in the mechanisms underlying trait anxiety.