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Coupling Between Brain Structures During Visual and Auditory Working Memory Tasks

Kaminski, Maciej and Brzezicka, Aneta and Kamiński, Jan and Blinowska, Katarzyna J. (2019) Coupling Between Brain Structures During Visual and Auditory Working Memory Tasks. International Journal of Neural Systems, 29 (3). Art. No. 1850046. ISSN 0129-0657. doi:10.1142/S0129065718500466.

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Transmission of EEG activity during a visual and auditory version of the working memory task based on the paradigm of linear syllogism was investigated. Our aim was to find possible similarities and differences in the synchronization patterns between brain structures during the same mental activity performed on different modality stimuli. The EEG activity transmission was evaluated by means of full frequency Directed Transfer Function (ffDTF) and short-time Directed Transfer Function (SDTF). SDTF provided information on dynamical propagation of EEG activity. The assortative mixing approach was applied to quantify coupling between regions of interest encompassing frontal, central and two posterior modules. The results showed similar schemes of coupling for both modalities with stronger coupling within the regions of interests than between them, which is concordant with the theories concerning efficient wiring and metabolic energy saving. The patterns of transmission showed main sources of activity in the anterior and posterior regions communicating intermittently in a broad frequency range. The differences between the patterns of transmission between the visual and auditory versions of working memory tasks were subtle and involved bigger propagation from the posterior electrodes towards the frontal ones during the visual task as well as from the temporal sites to the frontal ones during the auditory task.

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Additional Information:© 2018 World Scientific Publishing Co Pte Ltd. Accepted 23 September 2018; Published: 15 November 2018.
Subject Keywords:Working memory; EEG activity transmission; directed transfer function; coupling between brain regions; assortative mixing
Issue or Number:3
Record Number:CaltechAUTHORS:20181119-083030641
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91001
Deposited By: Tony Diaz
Deposited On:19 Nov 2018 17:47
Last Modified:16 Nov 2021 03:37

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