Striatum

Relevant Background Information Mr. Hughes Hughes is a Caucasian 22-year-old male. Mr. Hughes stated to have developed normally, and seemed to not show any delays. He had also mentioned to being the only child and was raised by both parents. Both of the parents were equally in his life before they had passed. However, Mr. Hughes has stated that his mother was notorious for letting him know that he is not necessarily safe because there is an abundance of germs and diseases out there. Mr. Hughes…

dopaminergic pathway was a study by Koepp and colleagues (1998) that took positron emission topography (PET) scans of eight male participants while they were playing a video game. The authors found that there were greater dopamine increases in the ventral striatum (where the NAc is located) in the experimental condition (playing the video game) than in the control condition (looking at an empty screen). Furthermore, while playing video games, authors found that there was a 13% reduction in the…

Frying your Brain on the Internet: Social Media is Cooking your Gray Matter Kathryn Fitzgerald -- July 18, 2016 Even though Steven Johnson's essay contains convincing arguments, his thesis that "Watching TV Makes you Smarter" (120) is overwhelmed by a tsunami of scientific evidence to the contrary. Nicolas Carr's essay deals with a different type of media -- internet browsing -- and takes the opposite stance to Johnson. Carr asks, "Is Google Making us Stupid?" (609). Even though both…

Introduction The statistics regarding the increase in ADHD rates in the United States over the past years are alarming. This issue is of great concern to not only adolescents but parents. Each year ADHD diagnoses are on the rise. The percentage goes up three present each year. In 2011 approximately 6.4 million adolescents were diagnosed with ADHD in the United States alone. Each year diagnoses go up by three percent. If this is true than as of 2016 there are on average 7.3 million adolescents…

Competition, predation and species responses to environmental change In the study that was run they were trying to examine the effects of interspecific competition which is when individuals of different species are competing for the same resources such as food and shelter in an ecosystem and the preying of one species on another species due to species responses to temperature change (Jiang and Kulczycki, 2004). Other experiments have been run on temperature change but they do not have a good…

most severe site of atrophy occurs in the neostriatum (see figure 3 [12]). Gross atrophy occurs in the caudate nucleus and putamen, and this atrophy is accompanied by selective neuronal loss and astrogliosis [1]. The progressive shrinkage of the striatum correlates with the severity and progression of the disease, with almost no striatal tissue present in very advanced stages of the HD [13]. A system was developed to grade the severity of HD using macroscopic and microscopic criteria, based on…

This found in a study done by psychology professor Russell Poldrack, is due to the fact that individuals who are multitasking while learning, “show activity in the striatum, a region of the brain involved in learning new skills; brain scans of people who are not distracted show activity in the hippocampus, a region involved in storing and recalling information.” Further he states in his study that multitasking effects…

Introduction The scientific study of Huntington’s Disease (HD) had began in 1872, by George Huntington who is a family physician that had published a report on the clinical symptoms and peculiar mode of inheritance of the disorder.(1, 2) Huntington’s disease has 3 subtypes according to the age onset, which are infantile, juvenile and the adult-onset.(2) Individuals with Huntington’s disease can become asymptomatic between the ages of 1 and 80 years.(3) The typical mean age of onset is 40 years,…

What is loneliness? According to the dictionary, the definition of loneliness is sadness due to having no friends or company or being in isolation. Loneliness is a complicated emotion; everyone is a little afraid of loneliness and everyone feels it. It is an emotion that everyone experiences during their life. A person can feel lonely if he/she is alone or in a crowded room. However, the dictionary definition of loneliness is partially correct. Feeling lonely is not the same as being alone.…

waiting for a larger reward have increased release of dopamine in their lateral prefrontal cortex and orbitofrontal cortex compared to the more impulsive subjects, those who choose the immediate reward, where there is increased activity in the ventral striatum and medial prefrontal cortex. RESULTS WHAT THE RESULTS MEAN IN TERMS OF IMPULSIVE BEHAVIOR HOW IT CAN BE USED TO IDENTIFY DISEASE Patients with ADHS and schizophrenia have volumetric reductions in their frontal lobes (OHMURA, REWRITE…