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Auditory Spatial Attention Assessed in a Flanker Interference Task

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We report three experiments designed to investigate interference effects in an auditory analog of Eriksen's visual flanker interference task (e.g. [1, 2]). In Experiment 1, participants made speeded auditory 'bat' versus 'bed' discrimination responses to a series of target words presented from a central loudspeaker while simultaneously trying to ignore auditory flanker words ('bat' or 'bed') presented from two loudspeakers positioned 30 degrees to either side of fixation. Participants responded more slowly on trials where the flankers were incongruent with the target than when they were congruent. Experiment 2 revealed that the magnitude of this auditory congruency effect was relatively unaffected by increasing the azimuthal separation between the target and flanker stimuli from 30 to 90 degrees. In Experiment 3, the flanker words were always different from the target word, no matter whether they were congruent or incongruent with the target response. Despite the fact that any energetic masking effects from congruent and incongruent flankers should have been normalized under such conditions, a congruency effect was still reported, supporting an informational masking account of the flanker effect. Our results therefore provide the first empirical demonstration of an auditory analog of Eriksen's visual flanker interference effect.
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Document Type: Research Article

Publication date: 01 May 2005

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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