a Department of Psychological Science , Northern Michigan University , Marquette , MI , USA.
b Data Services , New York University , New York City , NY , USA.
Cogn Emot. 2019 Sep;33(6):1271-1276. doi: 10.1080/02699931.2018.1536648. Epub 2018 Oct 19.
New methods of calculating indices from the dot-probe task measure temporal dynamics in attention bias or fluctuations in attention bias towards and away from emotional stimuli over time. However, it is unclear how task-specific parameters such as stimulus valence and stimulus onset asynchrony (SOA) as well as participant sex affect temporal dynamics in attention bias. To address this, male and female participants ( = 106) completed either a fearful or happy face dot-probe task with four levels of SOA (84 ms, 168 ms, 336 ms, and 672 ms). Results suggest that temporal dynamics in attention bias are (1) greatest at the longest SOA, (2) greater in females, and (3) insensitive to stimulus valence. These findings indicate that participant sex and task timing, but not stimulus valence, are related to temporal dynamics in attention bias and should be considered in future studies utilizing this approach.
新的计算指标的方法源于点探测任务，可测量注意力偏向的时间动态，或者随着时间的推移，对情绪刺激的注意力偏向和偏离的波动。然而，任务特异性参数（例如刺激效价和刺激起始时距（SOA））以及参与者性别如何影响注意力偏向的时间动态尚不清楚。为了解决这个问题，男性和女性参与者（n=106）分别完成了恐惧或快乐面孔点探测任务，其中 SOA 有四个水平（84ms、168ms、336ms 和 672ms）。结果表明，注意力偏向的时间动态（1）在最长的 SOA 时最大，（2）在女性中更大，（3）对刺激效价不敏感。这些发现表明，参与者性别和任务时间安排，而不是刺激效价，与注意力偏向的时间动态有关，在未来使用这种方法的研究中应加以考虑。
