Resting state functional connectivity reflects abnormal task-activated patterns in a developmental object agnosic

Sharon Gilaie-Dotan, Avital Hahamy-Dubossarsky, Yuval Nir, Aviva Berkovich-Ohana, Shlomo Bentin, Rafael Malach*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Even in the absence of stimulation or task, the cerebral cortex shows an incessant pattern of ultra slow fluctuations which are coherent across brain regions. In the healthy brain these coherent patterns (also termed resting state functional connectivity) often exhibit spatial similarity to the large scale organization of task-induced functional networks. However, it is not clear to what extent the resting state patterns can also reflect task-induced abnormalities in cortical activations which are often detected in various brain pathologies. Here we examined whether an abnormal visual activation pattern is recapitulated in the resting state functional connectivity. We examined LG, a sighted young adult with developmental object agnosia and no apparent cortical structural abnormality. We have previously reported that upon visual stimulation, LG's intermediate visual areas (V2, V3) are paradoxically deactivated. Here, examining LG's resting state functional connectivity revealed the same pattern of functional abnormality - including a strong atypical decorrelation between areas V2-V3 and the rest of the visual system. Thus, our results suggest that resting-state functional connectivity could provide a powerful tool which could complement task-specific paradigms in detecting task-related abnormalities in cortical activity without resorting to task performance.

Original languageEnglish
Pages (from-to)189-198
Number of pages10
JournalNeuroImage
Volume70
DOIs
StatePublished - 5 Apr 2013
Externally publishedYes

Funding

FundersFunder number
FP7 VERE
Helen and Martin Kimmel
Marie-Curie IEF
National Institute of Mental HealthR01 MH 64458-10, R01MH064458
Human Frontier Science Program

    Keywords

    • Deactivations
    • Developmental object agnosia
    • FMRI
    • Intermediate visual areas
    • Visual cortex

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