Epicenters of dynamic connectivity in the adaptation of the ventral visual system

Vesna Prčkovska, Willem Huijbers, Aaron Schultz, Laura Ortiz-Teran, Cleofe Peña-Gomez, Pablo Villoslada, Keith Johnson, Reisa Sperling, Jorge Sepulcre

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    Abstract

    OBJECTIVES AND DESIGN: Neuronal responses adapt to familiar and repeated sensory stimuli. Enhanced synchrony across wide brain systems has been postulated as a potential mechanism for this adaptation phenomenon. Here, we used recently developed graph theory methods to investigate hidden connectivity features of dynamic synchrony changes during a visual repetition paradigm. Particularly, we focused on strength connectivity changes occurring at local and distant brain neighborhoods.

    PRINCIPAL OBSERVATIONS: We found that connectivity reorganization in visual modal cortex-such as local suppressed connectivity in primary visual areas and distant suppressed connectivity in fusiform areas-is accompanied by enhanced local and distant connectivity in higher cognitive processing areas in multimodal and association cortex. Moreover, we found a shift of the dynamic functional connections from primary-visual-fusiform to primary-multimodal/association cortex.

    CONCLUSIONS: These findings suggest that repetition-suppression is made possible by reorganization of functional connectivity that enables communication between low- and high-order areas. Hum Brain Mapp 38:1965-1976, 2017. © 2017 Wiley Periodicals, Inc.

    Original languageEnglish
    Pages (from-to)1965-1976
    Number of pages12
    JournalHuman Brain Mapping
    Volume38
    Issue number4
    DOIs
    Publication statusPublished - Apr 2017

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    Prčkovska, V., Huijbers, W., Schultz, A., Ortiz-Teran, L., Peña-Gomez, C., Villoslada, P., Johnson, K., Sperling, R., & Sepulcre, J. (2017). Epicenters of dynamic connectivity in the adaptation of the ventral visual system. Human Brain Mapping, 38(4), 1965-1976. https://doi.org/10.1002/hbm.23497