2010 Fiscal Year Final Research Report
Improvement of cognitive performances by stimulus noise and adaptive mental set
| Project/Area Number |
20530676
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
KAWAHARA Jun-Ichiro National Institute of Advanced Industrial Science and Technology, ヒューマンライフテクノロジー研究部門, 主任研究員 (30322241)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 注意 / 認知 |
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| Research Abstract |
When two targets are embedded in a rapid serial visual presentation stream of distractors, perception of the second target is impaired when the inter-target lag is relatively short (less than 500 ms). Stimuli concurrently presented with the stream can affect this phenomenon, which is called attentional blink (AB). Previous studies have yielded conflicting results concerning the direction of the effect of added distractors on the AB: some studies report an increased AB, while others report a decreased AB. The present study explored the boundary conditions of the exaggeration/reduction effects of distractors on the AB and investigated underlying mechanisms by manipulating the spatial configuration, timing, and type of distractors. The results indicate that the magnitude of the AB deficit increased, regardless of the type of distractors, when spatial uncertainty of the target locations was involved. The reduction of the AB occurred at optimal presentation of distractors and disappeared when the second target was presented at a suprathreshold level. These results suggest that stochastic resonance or the centre-surround attentional mechanism may contribute to the reduction effect of distractors on the AB deficit.
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[Presentation] Distractor inhibition during the attentional blink: Evidence from distractor devaluation effect.2009
Author(s)
Kihara, K., Yagi, Y., Takeda, Y., Kawahara, J.
Organizer
Object Perception, Attention, and Memory (OPAM 2009)
Place of Presentation
Boston, Massachusetts.
Year and Date
2009-11-19
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