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Attentional Control and Intelligence: MRI Orbital Frontal Gray Matter and Neuropsychological Correlates
Joint Authors
McCarley, Robert W.
Niznikiewicz, Margaret A.
Nestor, Paul G.
Nakamura, Motoaki
Levitt, James J.
Newell, Dominick T.
Shenton, Martha E.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-26
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Attentional control is a key function of working memory that is hypothesized to play an important role in psychometric intelligence.
To test the neuropsychological underpinnings of this hypothesis, we examined full-scale IQ, as measured by the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III), and attentional control, as measured by Trails B response time and Wisconsin Card Sorting (WCS) test perseverative errors in 78 healthy participants, 25 of whom also had available magnetic resonance imaging (MRI) gray matter volume studies of the orbital frontal cortex (OFC) parcellated into three regions: gyrus rectus, middle orbital gyrus, and lateral orbital gyrus.
Hierarchical regression indicated that Trails B response time specifically explained 15.13% to 19.18% of the variation in IQ and WCS perseverative errors accounted for an additional 8.12% to 11.29% of the variance.
Full-scale IQ correlated very strongly with right middle orbital gyrus gray matter volume (r=0.610, p=0.002), as did Trails B response time with left middle orbital gyrus gray matter volume (r=-0.608, p=0.003).
Trails B response time and right middle orbital gyrus gray matter volume jointly accounted for approximately 32.95% to 54.82% of the variance in IQ scores.
These results provided evidence of the unique contributions of attentional control and OFC gray matter to intelligence.
American Psychological Association (APA)
Nestor, Paul G.& Nakamura, Motoaki& Niznikiewicz, Margaret A.& Levitt, James J.& Newell, Dominick T.& Shenton, Martha E.…[et al.]. 2015. Attentional Control and Intelligence: MRI Orbital Frontal Gray Matter and Neuropsychological Correlates. Behavioural Neurology،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1057533
Modern Language Association (MLA)
Nestor, Paul G.…[et al.]. Attentional Control and Intelligence: MRI Orbital Frontal Gray Matter and Neuropsychological Correlates. Behavioural Neurology No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1057533
American Medical Association (AMA)
Nestor, Paul G.& Nakamura, Motoaki& Niznikiewicz, Margaret A.& Levitt, James J.& Newell, Dominick T.& Shenton, Martha E.…[et al.]. Attentional Control and Intelligence: MRI Orbital Frontal Gray Matter and Neuropsychological Correlates. Behavioural Neurology. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1057533
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1057533