Traits, Inhibitory Control
Traits, Inhibitory Control

A quick resume of this article I perceive as quite important for the handling of reviews, social media and the calculation of human and artificial intelligence. Here an example for Facebook analytics of personality. The structure of your brain is calculated like that. For mainstream categorizations check VIA character or Gallup’s Clifton Strengthfinder.

Inhibitory control

Ability to control our behaviors, thoughts and emotions. Essential for all day to day tasks as reading, driving and socializing. Foundation for other subsidiary cognitive functions, such as verbal comprehension, learning and retrieval of memories.

Inhibitory control lesion studies

Right inferior frontal cortex responsible for inhibitory control regardless of response modality.

Inhibitory control, former fMRI studies (Swick et al. (2011))

Inhibitory control was associated with activation within a number of cortical regions, including the right inferior frontal gyrus, middle frontal gyrus, insular cortex and inferior parietal lobule.
Significant areas of activation were also identified in the left hemisphere, specifically within the superior, middle and inferior frontal gyri. Distinct functions of the subregions incompletely understood.

Trait

Inhibitory control associated with wide range of personality traits.
Five-factor model (FFM) is acknowledged by many researchers to provide a unified framework for conceptualizing personality traits. Distinct subregions within the PFC involved in cognitive function related to key trait-based phenotypes.

Neuroticism

N (gets nervous easily)

Extraversion

E (outgoing sociable)

Openness

O (artistic, aestethic experiences)

Agreeableness

A (considerate, kind)

Conscientiousness

C (makes plans, and follows them)

Impulsivity

Higher levels of N with negative urgency (when experiencing negative emotion).
Higher levels of E with sensation seeking (tendency to pursue new, complex experiences).
Lower levels of C with lack of premediation (minimal deliberation before acting).
Lower levels of C: Less perservance (difficulty sustaining task).

Inhibitory Control and Traits (Eisenberger et al. (2005)

Higher N associated with less activation in lateral PFC, rostral ACC, posterior parietal cortex.
Lower N associated with greater activation in dorsal ACC.
Higher E, more activation left lateral PFC, rostral ACC and lateral parietal cortex, lower activation in dorsal ACC.
Higher C more activation left lateral PFC, ACC, left medial PFC.

Present Study of inhibitory control

Hypothesized that higher N and lower E and C would be associated with less activation in bilateral PFC.
Functioning of the medial PFC associated with the more interpersonally oriented trait domains E and A. Exploratory analyses incorporating O.

left lateral

right lateral

medial

go, no go

response control

response control

response monitoring

self referencing

increase no go blocks

increase no go

decrease no go

Neuroticism

high, low

high, low

low, high

low, high

Extraversion

high, high

high, high

low, low

low, low

Agreableness

high, high

high, high

high, high

low, none

low, low

Conscientiousness

high, high

high, high

low, none

low, low

Neuroticism

Higher N associated with less activation in lateral PFC, rostral ACC, posterior parietal.
Higher N reflects difficulties in regulation of emotions, behaviors and response inhibition.
Poorer structural integrity with centers of cognition and emotional control in ACC and Amygdala.

Extraversion

Higher E associated with greater activation in lateral regions of PFC under conditions of inhibitory control.
Positive emotionality component shares inverse association with N. Opposing relationship with activation with N.
Individuals with higher E have stronger functional connectivity with centers of cognitive and emotional control.
Increasing coherency in neural systems responsible for control-related processes.

Agreableness

Similar pattern of activation as E.
Trait linked to self-regulatory capacity.
Higher standing associated with better performances on tests of inhibitory control and cognitive flexibility.
Higher activation in the dorsolateral PFC using emotion perception paradigms.
Increased interhemispheric connectivity within the dorsolateral PFC.
Stronger engagement of neural structures involved in control-related processes.
Greater structural integrity within neural tracts that form interconnections between the lateral PFC and posterior regions such as the caudal-inferior parietal cortex.
Greater structural integrity within neural tracts that form interconnections between the lateral PFC and posterior regions such as the caudal-inferior parietal cortex.

Conscientiousness

Also linked to higher lateral PFC activation.
Higher self-discipline and deliberation.
Higher C was also significantly correlated with higher accuracy on the task.
Better working memory and abstraction ability.
Higher levels of this trait have been associated with greater volume of the middle frontal gyrus in the left lateral PFC.
Greater white matter structural integrity and increased functional activation in lateral aspects of the PFC.

 

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