| 1. |
- K. Ljungberg, Jessica, et al.
(författare)
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Attention capture by tactile deviance
- 2012
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Ingår i: THULE. - : Kungliga skytteanska samfundet. - 9789186438425 ; , s. 119-132
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Bokkapitel (refereegranskat)
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| 2. |
- Ljungberg, Jessica K, 1971-, et al.
(författare)
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Cross-modal distraction by deviance : functional similarities between the auditory and tactile modalities
- 2012
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Ingår i: Experimental psychology (Göttingen). - : Hogrefe Publishing. - 1618-3169 .- 2190-5142. ; 59:6, s. 355-363
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Tidskriftsartikel (refereegranskat)abstract
- Unexpected task-irrelevant changes in the auditory or visual sensory channels have been shown to capture attention in an ineluctable manner and distract participants away from ongoing auditory or visual categorization tasks. We extend the study of this phenomenon by reporting the first within-participant comparison of deviance distraction in the tactile and auditory modalities. Using vibro-tactile-visual and auditory-visual cross-modal oddball tasks, we found that unexpected changes in the tactile and auditory modalities produced a number of functional similarities: A negative impact of distracter deviance on performance in the ongoing visual task, distraction on the subsequent trial (post-deviance distraction), and a similar decrease – but not the disappearance – of these effects across blocks. Despite these functional similarities, deviance distraction only correlated between the auditory and tactile modalities for the accuracy-based measure of deviance distraction and not for response latencies. Post-deviance distraction showed no correlation between modalities. Overall, the results suggest that behavioral deviance distraction may be underpinned by both modality-specific and multimodal mechanisms, while post-deviance distraction may predominantly relate to modality-specific processes.
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| 3. |
- Ljungberg, Jessica K., et al.
(författare)
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The Impact of Intonation and Valence on Objective and Subjective Attention Capture by Auditory Alarms
- 2012
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Ingår i: Human Factors. - : Sage Publications. - 0018-7208 .- 1547-8181. ; 54:5, s. 826-837
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Tidskriftsartikel (refereegranskat)abstract
- Objective:The objective was to study the involuntary capture of attention by spoken words varying in intonation and valence.Background:In studies of verbal alarms, the propensity of alarms to capture attention has been primarily assessed with the use of subjective ratings of their perceived urgency. Past studies suggest that such ratings vary with the alarms’ spoken urgency and content.Method:We measured attention capture by spoken words varying in valence (negative vs. neutral) and intonation (urgently vs. nonurgently spoken) through subjective ratings and behavioral measures. The key behavioral measure was the response latency to visual stimuli in the presence of spoken words breaking away from the periodical repetition of a tone.Results:The results showed that all words captured attention relative to a baseline standard tone but that this effect was partly counteracted by a relative speeding of responses for urgently compared with nonurgently spoken words. Word valence did not affect behavioral performance. Rating data showed that both intonation and valence increased significantly perceived urgency and attention grabbing without any interaction.Conclusion:The data suggest a congruency between subjective ratings and behavioral performance with respect to spoken intonation but not valence.Application:This study demonstrates the usefulness and feasibility of objective measures of attention capture to help design efficient alarm systems.
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| 4. |
- Ljungberg, Jessica K., et al.
(författare)
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The Informational Constraints of Behavioral Distraction by Unexpected Sounds : The Role of Event Information
- 2012
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Ingår i: Journal of Experimental Psychology. Learning, Memory and Cognition. - Washington : American Psychological Association (APA). - 0278-7393 .- 1939-1285. ; 38:5, s. 1461-1468
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Tidskriftsartikel (refereegranskat)abstract
- Sounds deviating from an otherwise repeated stream of task-irrelevant auditory stimuli (deviant sounds among standard sounds) are known to capture attention and impact negatively on ongoing behavioral performance (behavioral oddball distraction). Traditional views consider such distraction as the ineluctable consequence of the deviant sounds’ low probability of occurrence relative to that of the standard.Contrary to this contention, recent evidence demonstrates that distraction by deviant sounds is not obligatory and occurs only when sounds (standards and deviants), though to be ignored, act as useful warning cues by providing information as to whether and when a target stimulus is to be presented (Parmentier, Elsley, & Ljungberg, 2010). The present study aimed to extend this finding by disentangling the roles of event information (target’s probability of occurrence) and temporal information (target’s time of occurrence). Comparing performance in a cross-modal oddball task where standard and deviant sounds provided temporal information, event information, both, or none, we found that distraction by deviant sounds emerged when sounds conveyed event information. These results suggest that unexpected changes in a stream of sounds yield behavioral distraction to the extent that standards and deviants carry relevant goal-directed information, specifically, the likelihood of occurrence of an upcoming target.
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