Capture of exogenous attention modulates the attentional blink

Simon Nielsen, Tobias Andersen

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

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    Abstract

    When two targets (T1 & T2) are presented in rapid succession, observers often fail to report T2 if they attend to T1. Bottleneck theories propose that this attentional blink (AB) is due to T1 occupying a slow processing stage when T2 is presented. Accordingly, if increasing T1 difficulty increases T1 processing time, this should cause a greater AB. Attention capture hypotheses suggest that T1 captures attention, which cannot be reallocated to T2 in time. Accordingly, if increasing T1 difficulty, decreases saliency, this should cause a smaller AB. Studies examining how T1 difficulty affects the AB have reported inconsistent results. For example, some found a negative correlation between T1 contrast and T2 performance (Chua, 2005) where others find a positive correlation (Christmann & Leuthold, 2004). Here, we use additive Gaussian noise to tease apart the exogenous capture effect from the effect of T1 contrast. The capture effect is varied by the overall contrast energy for signal and noise. In two T1 conditions we adjust T1 performance to 60% by signal to noise ratio (SNR) but vary T1 contrast energy between conditions. From 17 observers we find that T2 performance correlates negatively with T1 contrast energy. Our results indicate that T1 capture modulates the AB. We suggest that this effect has confounded previous studies on the effect of T1 difficulty. In an electrophysiological version of the study we will further examine the implied relation between attention capture and the AB.
    Original languageEnglish
    Title of host publicationProceedings of the Cognitive Neurosciences Society's Annual meeting 2011
    Publication date2011
    Publication statusPublished - 2011
    Event18th Cognitive Neurosciences Society's Annual meeting - San Francisco, CA, United States
    Duration: 2 Apr 20115 Apr 2011
    Conference number: 2011
    http://neurocritic.blogspot.dk/2011/04/cognitive-neuroscience-society-annual.html

    Conference

    Conference18th Cognitive Neurosciences Society's Annual meeting
    Number2011
    CountryUnited States
    CitySan Francisco, CA
    Period02/04/201105/04/2011
    Internet address

    Cite this

    Nielsen, S., & Andersen, T. (2011). Capture of exogenous attention modulates the attentional blink. In Proceedings of the Cognitive Neurosciences Society's Annual meeting 2011
    Nielsen, Simon ; Andersen, Tobias. / Capture of exogenous attention modulates the attentional blink. Proceedings of the Cognitive Neurosciences Society's Annual meeting 2011. 2011.
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    Nielsen, S & Andersen, T 2011, Capture of exogenous attention modulates the attentional blink. in Proceedings of the Cognitive Neurosciences Society's Annual meeting 2011. 18th Cognitive Neurosciences Society's Annual meeting, San Francisco, CA, United States, 02/04/2011.

    Capture of exogenous attention modulates the attentional blink. / Nielsen, Simon; Andersen, Tobias.

    Proceedings of the Cognitive Neurosciences Society's Annual meeting 2011. 2011.

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

    TY - ABST

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    AU - Andersen, Tobias

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    AB - When two targets (T1 & T2) are presented in rapid succession, observers often fail to report T2 if they attend to T1. Bottleneck theories propose that this attentional blink (AB) is due to T1 occupying a slow processing stage when T2 is presented. Accordingly, if increasing T1 difficulty increases T1 processing time, this should cause a greater AB. Attention capture hypotheses suggest that T1 captures attention, which cannot be reallocated to T2 in time. Accordingly, if increasing T1 difficulty, decreases saliency, this should cause a smaller AB. Studies examining how T1 difficulty affects the AB have reported inconsistent results. For example, some found a negative correlation between T1 contrast and T2 performance (Chua, 2005) where others find a positive correlation (Christmann & Leuthold, 2004). Here, we use additive Gaussian noise to tease apart the exogenous capture effect from the effect of T1 contrast. The capture effect is varied by the overall contrast energy for signal and noise. In two T1 conditions we adjust T1 performance to 60% by signal to noise ratio (SNR) but vary T1 contrast energy between conditions. From 17 observers we find that T2 performance correlates negatively with T1 contrast energy. Our results indicate that T1 capture modulates the AB. We suggest that this effect has confounded previous studies on the effect of T1 difficulty. In an electrophysiological version of the study we will further examine the implied relation between attention capture and the AB.

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    BT - Proceedings of the Cognitive Neurosciences Society's Annual meeting 2011

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    Nielsen S, Andersen T. Capture of exogenous attention modulates the attentional blink. In Proceedings of the Cognitive Neurosciences Society's Annual meeting 2011. 2011