Impulsivity Flashcards
How is motor impulsivity measured?
with stop signal tasks and go/no-go tasks
How is cognitive impulsivity measured?
with delay discounting tasks
What characteristics do the three main impulsivity scale measure?
disinhibition vs. constraint
extraversion/positive emotionality
neuroticism/negative emotionality
What are the four dimensions of impulsivity in obese patients?
urgency, lack of perseverance, lack of premeditation and sensation seeking
What brain areas are associated with increased impulsivity in obese women?
executive function areas of the brain
In temporal discounting, what allows the individual to imagine and simulate future outcomes prior to selecting them?
the prospection system, made up of the posterior cingulate, precuneus, dorsomedial prefrontal cortex and medial temporal lobe
In temporal discounting, what areas are most involved when choices are difficult?
executive control regions
What brain areas are involved in impulsive decision making?
ventral striatum, limbic regions and supramarginal gyrus
What is the role of the striatum in impulsivity?
the ventral part is involved in emotion processing due to connections with frontal and limbic areas; the dorsal part is involved in learning from action outcomes
