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Altered Functional Brain Connectivity in a Non-Clinical Sample of Young Adults with Attention-Deficit/Hyperactivity Disorder

Overview of attention for article published in Journal of Neuroscience, December 2012
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Title
Altered Functional Brain Connectivity in a Non-Clinical Sample of Young Adults with Attention-Deficit/Hyperactivity Disorder
Published in
Journal of Neuroscience, December 2012
DOI 10.1523/jneurosci.3272-12.2012
Pubmed ID
Authors

Luca Cocchi, Ivanei E. Bramati, Andrew Zalesky, Emi Furukawa, Leonardo F. Fontenelle, Jorge Moll, Gail Tripp, Paulo Mattos

Abstract

Attention-deficit/hyperactivity disorder (ADHD) is characterized by symptoms of inattention and hyperactivity/impulsivity that often persist in adulthood. There is a growing consensus that ADHD is associated with abnormal function of diffuse brain networks, but such alterations remain poorly characterized. Using resting-state functional magnetic resonance imaging, we characterized multivariate (complex network measures), bivariate (network-based statistic), and univariate (regional homogeneity) properties of brain networks in a non-clinical, drug-naive sample of high-functioning young men and women with ADHD (nine males, seven females) and a group of matched healthy controls. Data from our sample allowed the isolation of intrinsic functional connectivity alterations specific to ADHD diagnosis and symptoms that are not related to developmental delays, general cognitive dysfunction, or history of medication use. Multivariate results suggested that frontal, temporal, and occipital cortices were abnormally connected locally as well as with the rest of the brain in individuals with ADHD. Results from the network-based statistic support and extend multivariate results by isolating two brain networks comprising regions between which inter-regional connectivity was significantly altered in the ADHD group; namely, a frontal amygdala-occipital network and a frontal temporal-occipital network. Brain behavior correlations further highlighted the key role of altered orbitofrontal-temporal and frontal-amygdala connectivity for symptoms of inattention and hyperactivity/impulsivity. All univariate properties were similar between groups. Taken together, results from this study show that the diagnosis and the two main symptom dimensions of ADHD are related to altered intrinsic connectivity in orbitofrontal-temporal-occipital and fronto-amygdala-occipital networks. Accordingly, our findings highlight the importance of extending the conceptualization of ADHD beyond segregated fronto-striatal alterations.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 225 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 1%
Netherlands 2 <1%
United Kingdom 2 <1%
Turkey 1 <1%
Australia 1 <1%
Unknown 216 96%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 55 24%
Researcher 38 17%
Student > Master 34 15%
Student > Bachelor 18 8%
Student > Doctoral Student 13 6%
Other 33 15%
Unknown 34 15%
Readers by discipline Count As %
Psychology 55 24%
Medicine and Dentistry 34 15%
Neuroscience 30 13%
Agricultural and Biological Sciences 20 9%
Engineering 10 4%
Other 24 11%
Unknown 52 23%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 19 June 2013.
All research outputs
#17,113,512
of 25,142,442 outputs
Outputs from Journal of Neuroscience
#19,417
of 24,037 outputs
Outputs of similar age
#193,173
of 290,732 outputs
Outputs of similar age from Journal of Neuroscience
#242
of 356 outputs
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