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

Prčkovska,Vesna
; 
Huijbers,Willem
; 
Schultz,Aaron
; 
Ortiz-Teran,Laura
; 
Peña-Gomez,Cleofe
; 
Villoslada,Pablo
; 
Johnson,Keith
; 
Sperling,Reisa
; 
Sepulcre,Jorge
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.
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© 2016 Wiley Periodicals, Inc.
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2017-04
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Tilburg University Research Output Collection
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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, vol. 38, no. 4, pp. 1965-1976. https://doi.org/10.1002/hbm.23497
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https://hdl.handle.net/20.500.14602/68154
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