Functional Network Organisations of two contrasting temperament groups in dimensions of novelty seeking and harm avoidance Sunghyon Kyeong National Institute for Mathematical Science (NIMS), Daejeon, Republic of Korea Published at Brain Research DOI: 10.1016/j.brainres.2014.05.037 Joint work with Eunjoo Kim, Hae-Jeong Park, and Dong-Uk Hwang
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Functional network organizations of two contrasting temperament groups in dimensions of novelty seeking and harm avoidance
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Functional Network Organisations of two contrasting temperament groups in dimensions of novelty seeking and harm avoidance
Sunghyon KyeongNational Institute for Mathematical Science (NIMS), Daejeon, Republic of Korea
Published at Brain ResearchDOI: 10.1016/j.brainres.2014.05.037
Joint work with Eunjoo Kim, Hae-Jeong Park, and Dong-Uk Hwang
Application of Graph Theoretical Methodology "
to"
Behavioural Neuroscience
In behavioural neuroscience,"behavioural characteristics of individuals originating from the different patterns of functional activity and morphometric variation in the brain
In psychology,"patterns of an individuals’s emotion, thoughts and behaviours"generally stable throughout his or her life and across situations.
HA and NS• Harm avoidance (HA) is a personality trait
characterised by excessive worrying, shyness, and being fearful, doubtful, and easily fatigued.
• Novelty seeking (NS) is a personality trait associated with exploratory activity in response to novel stimulation, impulsive decision making, and quick loss of temper and avoidance of frustration.
• Our goal is to identify the characteristics of the functional network modular organisations that make two contrasting temperament groups different."
• Existing studies didn’t show how the brain networks are organised across personality groups."
• Recently, brain modular organisations of three different impulsivity groups (i.e. low, medium, and high) were revealed (F. Caroline Davis et al. (2012)).
correlation between functional connectivity density (FCD) and temperament traits: (1) FCD between PFC and Limbic territories and NS; (2) FCD between PFC and Limbic territories and HA.
• The neural substrate of the individuals with ‘high HA and low NS’ group arise from the increased connectivity between PFC and Limbic. "
• Individuals with High HA and low NS showed the inhibited behaviour because the regulatory brain region such as the PFC is strongly association with fear related brain region such as the limbic system.
Neural Substrates for low HA and high NS group• The neural substrate of the individuals with low HA and high NS arise
from the strong connectivity between PFC and BG/THL. "
• Active and facilitating, extravert-like behaviour of the low HA and high NS group arise from the functional connection between PFC and BG/THL. The increased connectivity across the regions of dopamine pathway might related to behavioural characteristics of this group.