Neural correlates of a clinical continuous performance test

Abstract Functional magnetic resonance imaging (fMRI) was performed in 30 healthy adults to identify the location, magnitude, and extent of activation in brain regions that are engaged during the performance of Conners' Continuous Performance Test (CPT). Performance on the task during fMRI was...

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Bibliographic Details
Published in:Magnetic resonance imaging 2008-05, Vol.26 (4), p.504-512
Main Authors: Ogg, Robert J, Zou, Ping, Allen, Deanna N, Hutchins, Sabrina B, Dutkiewicz, Radek M, Mulhern, Raymond K
Format: Article
Language:English
Subjects:
Adult
Attention
Behavior
Brain - pathology
Brain function
Brain Mapping - methods
Cerebellum - pathology
Cognition
Cognitive deficits
Female
Functional imaging
Humans
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Male
Middle Aged
Motor Activity
Motor control
Neurons - metabolism
Object recognition
Radiology
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Summary:Abstract Functional magnetic resonance imaging (fMRI) was performed in 30 healthy adults to identify the location, magnitude, and extent of activation in brain regions that are engaged during the performance of Conners' Continuous Performance Test (CPT). Performance on the task during fMRI was highly correlated with performance on the standard Conners' CPT in the behavioral testing laboratory. An extensive neural network was activated during the task that included the frontal, cingulate, parietal, temporal, and occipital cortices; the cerebellum and the basal ganglia. There was also a network of brain regions which were more active during fixation than task. The magnitude of activation in several regions was correlated with reaction time. Among regions that were more active during task, the overall volume of supratentorial activation and cerebellar activation was greater in the left hemisphere. Frontal activation was greater in dorsal than in ventral regions, and dorsal frontal activation was bilateral. Ventral frontal region and parietal lobe activation were greater in the right hemisphere. The volume of clusters of activation in the extrastriate ventral visual pathway was greater in the left hemisphere. This network is consistent with existing models of motor control, visual object processing and attentional control and may serve as a basis for hypothesis-driven fMRI studies in clinical populations with deficits in Conners' CPT performance.
ISSN:0730-725X
1873-5894
DOI:10.1016/j.mri.2007.09.004