Attention training and the threat bias: An ERP study

作者：O' Toole Laura; Dennis Tracy A^*

来源：Brain and Cognition, 2012, 78(1): 63-73.

DOI：10.1016/j.bandc.2011.10.007

• Attention training
• Dot probe
• ERP

Anxiety is characterized by exaggerated attention to threat. Several studies suggest that this threat bias plays a causal role ill the development and maintenance of anxiety disorders. Furthermore, although the threat bias can be reduced in anxious individuals and induced in non-anxious individual, the attentional mechanisms underlying these changes remain unclear. To address this issue, 49 non-anxious adults were randomly assigned to either attentional training toward or training away from threat using a modified version of the dot probe task. Behavioral measures of attentional biases were also generated pre- and post-training using the dot probe task. Event-related potentials (ERPs) were generated to threat and non-threat face pairs and probes during pre- and post-training assessments. Effects of training on behavioral measures of the threat bias were significant, but only for those participants showing pre-training biases. Attention training also influenced early spatial attention, as measured by post-training P1 amplitudes to cues. Results illustrate the importance of taking pre-training attention biases in non-anxious individuals into account when evaluating the effects of attention training and tracking physiological changes in attention following training.

• 出版日期2012-2