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An EEG study of detection without localisation in change blindness

Previous studies of change blindness have suggested a distinction between detection and localisation of changes in a visual scene. Using a simple paradigm with an array of coloured squares, the present study aimed to further investigate differences in event-related potentials (ERPs) between trials i...

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Autores principales: Scrivener, Catriona L., Malik, Asad, Marsh, Jade, Lindner, Michael, Roesch, Etienne B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6751272/
https://www.ncbi.nlm.nih.gov/pubmed/31338534
http://dx.doi.org/10.1007/s00221-019-05602-2
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author Scrivener, Catriona L.
Malik, Asad
Marsh, Jade
Lindner, Michael
Roesch, Etienne B.
author_facet Scrivener, Catriona L.
Malik, Asad
Marsh, Jade
Lindner, Michael
Roesch, Etienne B.
author_sort Scrivener, Catriona L.
collection PubMed
description Previous studies of change blindness have suggested a distinction between detection and localisation of changes in a visual scene. Using a simple paradigm with an array of coloured squares, the present study aimed to further investigate differences in event-related potentials (ERPs) between trials in which participants could detect the presence of a colour change but not identify the location of the change (sense trials), versus those where participants could both detect and localise the change (localise trials). Individual differences in performance were controlled for by adjusting the difficulty of the task in real time. Behaviourally, reaction times for sense, blind, and false alarm trials were distinguishable when comparing across levels of participant certainty. In the EEG data, we found no significant differences in the visual awareness negativity ERP, contrary to previous findings. In the N2pc range, both awareness conditions (localise and sense) were significantly different to trials with no change detection (blind trials), suggesting that this ERP is not dependent on explicit awareness. Within the late positivity range, all conditions were significantly different. These results suggest that changes can be ‘sensed’ without knowledge of the location of the changing object, and that participant certainty scores can provide valuable information about the perception of changes in change blindness.
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spelling pubmed-67512722019-10-04 An EEG study of detection without localisation in change blindness Scrivener, Catriona L. Malik, Asad Marsh, Jade Lindner, Michael Roesch, Etienne B. Exp Brain Res Research Article Previous studies of change blindness have suggested a distinction between detection and localisation of changes in a visual scene. Using a simple paradigm with an array of coloured squares, the present study aimed to further investigate differences in event-related potentials (ERPs) between trials in which participants could detect the presence of a colour change but not identify the location of the change (sense trials), versus those where participants could both detect and localise the change (localise trials). Individual differences in performance were controlled for by adjusting the difficulty of the task in real time. Behaviourally, reaction times for sense, blind, and false alarm trials were distinguishable when comparing across levels of participant certainty. In the EEG data, we found no significant differences in the visual awareness negativity ERP, contrary to previous findings. In the N2pc range, both awareness conditions (localise and sense) were significantly different to trials with no change detection (blind trials), suggesting that this ERP is not dependent on explicit awareness. Within the late positivity range, all conditions were significantly different. These results suggest that changes can be ‘sensed’ without knowledge of the location of the changing object, and that participant certainty scores can provide valuable information about the perception of changes in change blindness. Springer Berlin Heidelberg 2019-07-23 2019 /pmc/articles/PMC6751272/ /pubmed/31338534 http://dx.doi.org/10.1007/s00221-019-05602-2 Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Research Article
Scrivener, Catriona L.
Malik, Asad
Marsh, Jade
Lindner, Michael
Roesch, Etienne B.
An EEG study of detection without localisation in change blindness
title An EEG study of detection without localisation in change blindness
title_full An EEG study of detection without localisation in change blindness
title_fullStr An EEG study of detection without localisation in change blindness
title_full_unstemmed An EEG study of detection without localisation in change blindness
title_short An EEG study of detection without localisation in change blindness
title_sort eeg study of detection without localisation in change blindness
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6751272/
https://www.ncbi.nlm.nih.gov/pubmed/31338534
http://dx.doi.org/10.1007/s00221-019-05602-2
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