Processing task-irrelevant emotional information may compromise attention performance, particularly among those showing elevated threat sensitivity. If threat-sensitive individuals are able to recruit attentional control to inhibit emotional processing, however, they may show few decrements in attention performance. To examine this hypothesis, attention performance was measured in three domains-alerting, orienting, and executive attention. Task-irrelevant fearful, sad, and happy faces were presented for 50 ms before each trial of the attention task to create a mildly competitive emotional context. Electroencephalographic recordings were made from 64 scalp electrodes to generate event-related potentials (ERPs) to the faces. Participants reporting high threat sensitivity showed enhanced ERPs thought to reflect emotional processing (P200) and attentional control (P100 and N200). Enhanced N200 following fearful faces was linked to sustained and even slightly improved executive attention performance (reduced conflict interference) among high threatsensitive individuals, but with decrements in executive attention among low threat-sensitive individuals. Results are discussed in terms of cognitive processing efficiency and the balance between threat sensitivity and attentional control in relation to executive attention performance. Results may have implications for understanding automatic and voluntary attentional biases related to anxiety.
KeywordsCognitive control; Event-related brain potentials; Behavioral inhibition system; Emotion-attention interactions Preferential processing of negative emotional information may compromise attention performance (Cacioppo and Berntson, 1994;Hare et al., 2005;Simpson et al., 2000). This relatively automatic 'negativity bias' is adaptive because it facilitates rapid processing of threat, but may also deplete the resources available for more voluntary control of attention performance (Bishop et al., 2004;Desimone and Duncan, 1995;Kieras et al., 2000;Miller and Cohen, 2001).Individuals who show behavioral inhibition system (BIS) sensitivity and anxious mood are thought to show enhanced negativity biases, particularly towards threat and fear-related stimuli (Bishop et al., 2004;Carver and Scheier, 1998;Gray and McNaughton, 2000;Higgins et al., 1997;Leen-Feldner et al., 2004;Mathews and Mackintosh, 1998). Threat-sensitivity is more likely to interfere with attention when it exceeds an optimal level: for example, elevated anxiety has been shown to increase the negative impact of threat-related emotional stimuli on executive attention (Jazbec et al., 2005;Mathews and Mackintosh, 1998;Wood et al., 2001) such as conflict interference tasks (Fenske and Eastwood, 2003;Williams et al., 1996).BIS-sensitive individuals, however, vary in the degree to which they recruit cognitive control resources to inhibit attention towards emotional information (Gray and Burgess, 2004) and in the degree to which this attentional control supports attention performance (Derryberry and Reed, 2002). For ex...