ISSN 1671-3710
CN 11-4766/R
主办:中国科学院心理研究所
出版:科学出版社

心理科学进展 ›› 2017, Vol. 25 ›› Issue (suppl.): 47-47.

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 Behavioral oscillation in visual attention depends on task difficulty

 Airui Chen; Ming Zhang   

  1.  Department of Psychology, Soochow University, Suzhou, China, 215000
  • 出版日期:2017-08-26 发布日期:2017-08-12
  • 基金资助:
     

 

    

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  • Online:2017-08-26 Published:2017-08-12
  • Supported by:
     

摘要:  PURPOSE: The spotlight of attention is full of discrete moments and operates periodically. Recently, several psychophysics studies investigate behavioral oscillation in visual attention, but they found different periodicities. Task difficulty might be one of important factors which caused disagreement in attentional periodic patterns. In the present study, behavioral oscillations in visual attention during difficult and easy tasks were examined.
METHODS: A modified high temporal resolution cue-target paradigm, the cue-target SOA varied from 0.1 s to 1.08 s in steps of 20 ms, was used. In difficult condition, target was detected successfully at 65%. While, 75% in easy condition.
RESULTS: We found a theta rhythm in difficulty version, consistent with previous studies. While, in the easy version, attention oscillation increased to a higher frequency. Additionally, task difficulty negatively related to power for all bands.
CONCLUSIONS: Our findings suggest that when task was easy, attention spotlight switched faster. If task was difficult, it switched much slower to get more information. A flexible mechanism for attention spotlight and this could be modulated by task demand.

关键词:  visual attention, behavioral oscillation, task difficulty

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