Psychosis is associated with ventral striatal (VS) which is the part of the brain that is involved with the desire to naturally satisfy the body's needs. When high reports of negative symptoms were recorded, there were significant irregularities in the left VS. Anhedonia, the inability to feel pleasure, is a commonly reported symptom in psychosis; experiences are present in most people with schizophrenia. Anhedonia arises as a result of the inability to feel motivation and drive towards both the desire to engage in as well as to complete tasks and goals. Previous research has indicated that a deficiency in the neural representation in regards to goals and the motivation to achieve them, has demonstrated that when a reward is not present, a strong reaction is noted in the ventral striatum; reinforcement learning is intact when contingencies about stimulus-reward are implicit, but not when they require explicit neural processing; reward prediction errors are what the actual reward is versus what the reward was predicted to be. In most cases positive prediction errors are considered an abnormal occurrence. A positive prediction error response occurs when there is an increased activation in a brain region, typically the striatum, in response to unexpected rewards. A negative prediction error response occurs when there is a decreased activation in a region when predicted rewards do not occur. Anterior Cingulate Cortex (ACC) response, taken as an indicator of effort allocation, does not increase with reward or reward probability increase, and is associated with negative symptoms; deficits in Dorsolateral Prefrontal Cortex (dlPFC) activity and failure to improve performance on cognitive tasks when offered monetary incentives are present; and dopamine mediated functions are abnormal.
Pesquisar
Chart
Categorias
- Arts
- Business
- Computers
- Jogos
- Health
- Início
- Kids and Teens
- News
- Recreation
- Reference
- Regional
- Science
- Shopping
- Society
- Sports
- Бизнес
- Дом
- Досуг
- Здоровье
- Игры
- Искусство
- Источники информации
- Компьютеры
- Наука
- Новости и СМИ
- Общество
- Покупки
- Спорт
- Страны и регионы
- World
Leia Mais
12 Омское областное телевидение. Прямой эфир.
12 канал — единственная региональная телекомпания, осуществляющая собственное...
Война будущего. The Tomorrow War (2021)
Декабрь 2022 года. Во время финала чемпионата мира по футболу в Катаре на поле высаживается...
Python Windows-Toast
Windows-toast is a Python library used for sending notifications in Windows 10 and 11. With it,...
Paths of Glory. (1957)
After refusing to attack an enemy position, a general accuses the soldiers of cowardice and their...
Nomadland (2020)
Following the economic collapse of a company town in rural Nevada, Fern (Frances McDormand) packs...