Fearful attention Investigating event-related potentials in spider phobia
نویسنده
چکیده
......................................................................................... 8 Acknowledgment .............................................................................. 9 Introduction .................................................................................... 10 Selective attention ........................................................................... 11 The concept of attention ................................................................ 11 Attention as structure or capacity ................................................... 11 A possible integration: Load theory ................................................. 12 Visual attention ............................................................................ 14 Emotion ......................................................................................... 16 Types or dimensions of emotionality ............................................... 16 Emotion elicitation ........................................................................ 16 Phobia ......................................................................................... 17 Emotion and attention ...................................................................... 19 Attentional bias to emotion ............................................................ 19 Emotion without top-down attention ............................................... 20 Event-related potentials ................................................................... 22 P1 .............................................................................................. 22 EPN ............................................................................................ 23 LPP ............................................................................................. 23 Summary of studies ......................................................................... 26 Study I ........................................................................................ 26 Study II ...................................................................................... 28 Study III ..................................................................................... 30 General discussion ........................................................................... 33 References ..................................................................................... 37
منابع مشابه
Psychophysiology of spider phobia in 8- to 12-year-old girls.
The present investigation focused on late event-related potentials (ERPs) and facial electromyographic (EMG) activity in response to symptom provocation in 8- to 12-year-old spider phobic girls and compared results to those in non-fearful controls. Fourteen patients and 14 controls were presented with phobia-relevant, generally fear-inducing, disgust-inducing and affectively neutral pictures in...
متن کاملEvent-Related Potentials of Bottom-Up and Top-Down Processing of Emotional Faces
Introduction: Emotional stimulus is processed automatically in a bottom-up way or can be processed voluntarily in a top-down way. Imaging studies have indicated that bottom-up and top-down processing are mediated through different neural systems. However, temporal differentiation of top-down versus bottom-up processing of facial emotional expressions has remained to be clarified. The present st...
متن کاملBrain dynamics in spider-phobic individuals exposed to phobia-relevant and other emotional stimuli.
Dense sensor event-related brain potentials were measured in participants with spider phobia and nonfearful controls during viewing of phobia-relevant spider and standard emotional (pleasant, unpleasant, neutral) pictures. Irrespective of the picture content, spider phobia participants responded with larger P1 amplitudes than controls, suggesting increased vigilance in this group. Furthermore, ...
متن کاملModulation of the ERP repetition effects during exposure to phobia-relevant and other affective pictures in spider phobia.
In the present study, dense sensor event-related potentials were measured in spider-phobic individuals and non-anxious controls during incidental encoding of phobia-relevant spider and standard neutral, unpleasant and pleasant pictures. Stimulus repetition effects were assessed by presenting each picture twice--in the first and in the second half of the session. Repeated presentation of standar...
متن کاملMechanisms of visual threat detection in specific phobia.
People with anxiety or stress-related disorders attend differently to threat-relevant compared with non-threat stimuli, yet the temporal mechanisms of differential allocation of attention are not well understood. We investigated two independent mechanisms of temporal processing of visual threat by comparing spider-phobic and non-fearful participants using a rapid serial visual presentation task...
متن کامل