PSYC 4460 Lecture Notes - Lecture 8: Neurodevelopmental Disorder, Attention Deficit Hyperactivity Disorder, Attention

• School: York University
• Department: Psychology
• Course: PSYC 4460
• Professor: Magdalena Wojtowicz

Document Summary

Prevalence of adhd: prevalence is highest in south america and africa >north america and. Causes: 50% concordance in monozygotic twins, with higher concordance for hyperactivity/impulsivity, molecular genetics, dopamine and serotonin uptake are important in regulating attention and inhibiting behaviour, caused by small deletions or duplications on several chromosomes. Frontal-striatal neural circuit: part of the basal ganglia, which regulates behaviour in response to feedback from the environment, dopaminergic activity in the striatum prompts us to seek pleasure, excitements, novelty, and potential rewards, right prefrontal cortex (executive functioning) The default mode network (daydreaming: medial prefrontal cortex, medial parietal cortex, and medial temporal cortex, adhd are unable to suppress the default network. How do deficits in executive functioning underlie adhd. 6: executive functions allow the child to, determine their own behaviour, be influenced by delayed reinforcers, set long-term goals, difficulty with behavioural inhibition interferes with the development of the executive functions during infancy and early childhood.