3.1.2 Evaluating dopamine & addiction Flashcards
what did Corigall & Coen’s (1991) rat research show?
rats will self administer nicotine through implants to provide themselves with positive feelings
(Corigall & Coen) what does the nicotine lead to a release of?
dopamine
how is corigall & coen’s rat research flawed?
It uses rats - rats aren’t humans
not generalizable
Jousta found dopamine levels were increased in participants given what?
a gambling task regardless of win or loss
Boileau found alcohol has what effect on dopamine levels in the brain?
increases dopamine levels
what is volkows’ theory?
changes in the frontal cortex turn engaging in a behaviour into an addiction
what do brain imaging studies provide in studying changes addiction causes to the human brain?
objective evidence for changes/differences in addicts brain activity
Volkow (1992) found cocaine addicts showed what?
abnormalities in their frontal cortex
Bolla et al (2003) found cocaine addicts showed what?
impaired performance in activities using their frontal cortex
Volkow and Bolla’s research provide evidence for what?
the link between, dopamine, addiction and brain activity
it is not the case that all addictive behaviours do what?
raise levels of dopamine
Stokes et al found what amongst volunteers taking what?
no significant increase in dopamine levels
Karmen Yoder found no consistent increase in dopamine across who?
participants in their study given alchol
Stokes and Karmen Yoder’s research provides evidence against what?
the role of dopamine in addiction
what does explaining addiction due to the effects of dopamine ignore?
dopamine has a range of funtions
