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    Decoding the Temporal Dynamics of Covert Spatial Attention Using Multivariate EEG Analysis: Contributions of Raw Amplitude and Alpha Power

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    Author
    Desantis, A; Chan-Hon-Tong, A; Collins, T; Hogendoorn, H; Cavanagh, P
    Date
    2020-10-09
    Source Title
    Frontiers in Human Neuroscience
    Publisher
    FRONTIERS MEDIA SA
    University of Melbourne Author/s
    Hogendoorn, Jacob
    Affiliation
    Melbourne School of Psychological Sciences
    Metadata
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    Document Type
    Journal Article
    Citations
    Desantis, A., Chan-Hon-Tong, A., Collins, T., Hogendoorn, H. & Cavanagh, P. (2020). Decoding the Temporal Dynamics of Covert Spatial Attention Using Multivariate EEG Analysis: Contributions of Raw Amplitude and Alpha Power. FRONTIERS IN HUMAN NEUROSCIENCE, 14, https://doi.org/10.3389/fnhum.2020.570419.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/252662
    DOI
    10.3389/fnhum.2020.570419
    Abstract
    Attention can be oriented in space covertly without the need of eye movements. We used multivariate pattern classification analyses (MVPA) to investigate whether the time course of the deployment of covert spatial attention leading up to the observer's perceptual decision can be decoded from both EEG alpha power and raw activity traces. Decoding attention from these signals can help determine whether raw EEG signals and alpha power reflect the same or distinct features of attentional selection. Using a classical cueing task, we showed that the orientation of covert spatial attention can be decoded by both signals. However, raw activity and alpha power may reflect different features of spatial attention, with alpha power more associated with the orientation of covert attention in space and raw activity with the influence of attention on perceptual processes.

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