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Substance dependence, also known as drug dependence, is a biopsychological situation whereby an individual's functionality is dependent on the necessitated re-consumption of a psychoactive substance because of an adaptive state that has developed within the individual from psychoactive substance consumption that results in the experience of withdrawal and that necessitates the re-consumption ...
An addiction is, by definition, a form of compulsion, and involves operant reinforcement. For example, dopamine is released in the brain's reward system and is a motive for behaviour (i.e. the compulsions in addiction development through positive reinforcement). [19] There are two main differences between compulsion and addiction.
Addiction treatment must also help the individual maintain a drug-free lifestyle, and achieve productive functioning in the family, at work, and in society. Addiction is a disease which alters the structure and function of the brain. The brain circuitry may take months or years to recover after the addict has recovered. [42]
“The brain changes, and it doesn’t recover when you just stop the drug because the brain has been actually changed,” Kreek explained. “The brain may get OK with time in some persons. But it’s hard to find a person who has completely normal brain function after a long cycle of opiate addiction, not without specific medication treatment.”
[98] [31] The brain disease model of addiction posits that an individual's exposure to an addictive drug is the most significant environmental risk factor for addiction. [99] Many researchers, including neuroscientists, indicate that the brain disease model presents a misleading, incomplete, and potentially detrimental explanation of addiction ...
“As a result, the brain is particularly vulnerable to internet addiction-related urges during this time, such as compulsive internet usage, cravings towards usage of the mouse or keyboard and ...
Neuroscientists believe that drug addicts’ behavior is a direct correlation to some physiological change in their brain, caused by using drugs. This view believes there is a bodily function in the brain causing the addiction. This is brought on by a change in the brain caused by brain damage or adaptation from chronic drug use. [1] [2]
Psychological dependence develops through consistent and frequent exposure to a stimulus. After sufficient exposure to a stimulus capable of inducing psychological dependence (e.g., drug use), an adaptive state develops that results in the onset of withdrawal symptoms that negatively affect psychological function upon cessation of exposure.