Attentional reorienting triggers spatial asymmetries in a search task with cross-modal spatial cueing

Paladini, Rebecca Elise; Diana, Lorenzo; Zito, Giuseppe Angelo; Nyffeler, Thomas; Wyss, Patric; Mosimann, Urs Peter; Müri, René Martin; Nef, Tobias; Cazzoli, Dario (2018). Attentional reorienting triggers spatial asymmetries in a search task with cross-modal spatial cueing. PLoS ONE, 13(1), e0190677. Public Library of Science 10.1371/journal.pone.0190677

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Cross-modal spatial cueing can affect performance in a visual search task. For example, search performance improves if a visual target and an auditory cue originate from the same spatial location, and it deteriorates if they originate from different locations. Moreover, it has recently been postulated that multisensory settings, i.e., experimental settings, in which critical stimuli are concurrently presented in different sensory modalities (e.g., visual and auditory), may trigger asymmetries in visuospatial attention. Thereby, a facilitation has been observed for visual stimuli presented in the right compared to the left visual space. However, it remains unclear whether auditory cueing of attention differentially affects search performance in the left and the right hemifields in audio-visual search tasks. The present study investigated whether spatial asymmetries would occur in a search task with cross-modal spatial cueing. Participants completed a visual search task that contained no auditory cues (i.e., unimodal visual condition), spatially congruent, spatially incongruent, and spatially non-informative auditory cues. To further assess participants' accuracy in localising the auditory cues, a unimodal auditory spatial localisation task was also administered. The results demonstrated no left/right asymmetries in the unimodal visual search condition. Both an additional incongruent, as well as a spatially non-informative, auditory cue resulted in lateral asymmetries. Thereby, search times were increased for targets presented in the left compared to the right hemifield. No such spatial asymmetry was observed in the congruent condition. However, participants' performance in the congruent condition was modulated by their tone localisation accuracy. The findings of the present study demonstrate that spatial asymmetries in multisensory processing depend on the validity of the cross-modal cues, and occur under specific attentional conditions, i.e., when visual attention has to be reoriented towards the left hemifield.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Forschungsbereich Pavillon 52 > Forschungsgruppe Perzeption und Okulomotorik
04 Faculty of Medicine > University Psychiatric Services > University Hospital of Geriatric Psychiatry and Psychotherapy
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DCR Unit Sahli Building > Forschungsgruppe Neurologie
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Gerontechnology and Rehabilitation

Graduate School:

Graduate School for Health Sciences (GHS)

UniBE Contributor:

Paladini, Rebecca Elise; Diana, Lorenzo; Zito, Giuseppe Angelo; Nyffeler, Thomas; Wyss, Patric; Mosimann, Urs Peter; Müri, René Martin; Nef, Tobias and Cazzoli, Dario

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

1932-6203

Publisher:

Public Library of Science

Funders:

[42] Schweizerischer Nationalfonds

Language:

English

Submitter:

Angela Amira Botros

Date Deposited:

16 Jan 2018 15:37

Last Modified:

26 Jan 2018 16:50

Publisher DOI:

10.1371/journal.pone.0190677

PubMed ID:

29293637

BORIS DOI:

10.7892/boris.108557

URI:

https://boris.unibe.ch/id/eprint/108557

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