Neural basis of individual differences in impulsivity: contributions of corticolimbic circuits for behavioral arousal and control.
The objective of the current study was to analyze the neural correlates of behavioral arousal and inhibitory control as they relate to individual differences in impulsivity via well-established functional MRI amygdala reactivity and prefrontal inhibitory control paradigms in healthy adult subjects. Impulsivity correlated positively with activity of the bilateral ventral amygdala, parahippocampal gyrus, dorsal anterior cingulate gyrus (BA 32), and bilateral caudate. Conversely, impulsivity correlated negatively with activity of the dorsal amygdala and ventral prefrontal cortex (BA 47). Together, these findings suggest that dispositional impulsivity is influenced by the functional interplay of corticolimbic behavioral arousal and control circuits.
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Related Subject Headings
- Social Control, Informal
- Severity of Illness Index
- Prefrontal Cortex
- Neural Inhibition
- Nerve Net
- Middle Aged
- Male
- Magnetic Resonance Imaging
- Limbic System
- Humans
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Social Control, Informal
- Severity of Illness Index
- Prefrontal Cortex
- Neural Inhibition
- Nerve Net
- Middle Aged
- Male
- Magnetic Resonance Imaging
- Limbic System
- Humans