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Lateral prefrontal activity as a compensatory strategy for deficits of cortical processing in Attention Deficit Hyperactivity Disorder
(2017-12-01)
ZAMORANO MENDIETA, FRANCISCO JAVIER
;
BILLEKE BOBADILLA, PABLO ERNESTO
;
Kausel, Leonie
;
Larrain, Josefina
;
STECHER GUZMAN, XIMENA PATRICIA
Attention Deficit Hyperactivity Disorder (ADHD) is the most common neuropsychiatric disorder in childhood and is characterized by a delay of cortical maturation in frontal regions. In order to investigate interference control, which is a key function of frontal areas, a functional MRI study was conducted on 17 ADHD boys and 17 typically developing (TD) boys, while solving the multi source interference task (MSIT). This task consists of two conditions, a "congruent condition" and an "incongruent condition". The latter requires to inhibit information that interferes with task-relevant stimuli. Behavioral results showed that ADHD subjects committed more errors than TD children. In addition, TD children presented a larger MSIT effect -A greater difference in reaction times between the incongruent and the congruent conditions- than ADHD children. Associated to the MSIT effect, neuroimaging results showed a significant enhancement in the activation of the right lateral prefrontal cortex (rlPFC) in ADHD than in TD subjects. Finally, ADHD subjects presented greater functional connectivity between rlPFC and bilateral orbitofrontal cortex than the TD group. This difference in connectivity correlated with worse performance in both groups. Our results could reflect a compensatory strategy of ADHD children resulting from their effort to maintain an adequate performance during MSIT.
3Scopus© Citations 15
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Intra-Individual Response Variability Assessed by Ex-Gaussian Analysis may be a New Endophenotype for Attention-Deficit/Hyperactivity Disorder
(2015)
Marcela Patricia HenrÃquez-HenrÃquez
;
BILLEKE BOBADILLA, PABLO ERNESTO
;
Hugo HenrÃquez
;
ZAMORANO M, FRANCISCO JAVIER
;
Francisco Rothhammer
Scopus© Citations 28 1
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Behavioral disinhibition and nascent venturing: Relevance and initial effects on potential resource providers
(2016)
LERNER, DANIEL ANDREW
Scopus© Citations 58 2
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Entrepreneurship and attention deficit/hyperactivity disorder: a large-scale study involving the clinical condition of ADHD
(2018)
LERNER, DANIEL ANDREW
;
Ingrid Verheul
;
Roy Thurik
Scopus© Citations 87 1
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Clinical characterization of rapid cycling bipolar disorder: Association with attention deficit hyperactivity disorder
(2018)
Alberto Aedo
;
Andrea Murru
;
Raúl Sanchez
;
Iria Grande
;
Eduard Vieta
20Scopus© Citations 16

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