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    Transient attention gates access consciousness: coupling N2pc and P3 latencies using Dynamic Time Warping

    Hosseini, M. and Zivony, Alon and Eimer, Martin and Wyble, B. and Bowman, H. (2024) Transient attention gates access consciousness: coupling N2pc and P3 latencies using Dynamic Time Warping. Journal of Neuroscience , ISSN 0270-6474.

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    Abstract

    The N2pc & P3 Event-Related Potentials (ERPs), used to index selective attention and access to working memory and conscious awareness, respectively, have been important tools in cognitive sciences. Although it is likely that these two components and the underlying cognitive processes are temporally and functionally linked, such links have not yet been convincingly demonstrated. Adopting a novel methodological approach based on Dynamic Time Warping (DTW), we provide evidence that the N2pc and P3 ERP components are temporally linked. We analysed data from an experiment where 23 participants (16 women) monitored bilateral rapid serial streams of letters and digits in order to report a target digit indicated by a shape cue, separately for trials with correct responses and trials where a temporally proximal distractor was reported instead (distractor intrusion). DTW analyses revealed that N2pc and P3 latencies were correlated in time, both when the target or a distractor was reported. Notably, this link was weaker on distractor intrusion trials. This N2pc-P3 association is discussed with respect to the relationship between attention and access consciousness. Our results demonstrate that our novel method provides a valuable approach for assessing temporal links between two cognitive processes and their underlying modulating factors. This method allows to establish links and their modulator for any two time-series across all domains of the field (general-purpose MATLAB functions and a Python module are provided alongside this paper).

    Metadata

    Item Type: Article
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
    Depositing User: Martin Eimer
    Date Deposited: 31 May 2024 14:55
    Last Modified: 01 Jun 2024 08:27
    URI: https://eprints.bbk.ac.uk/id/eprint/53602

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