Lab #7 and #9 Assignment Example | Topics and Well Written Essays - 500 words

Lab #7 and #9 - Assignment Example However structural and functional abnormalities have been observed in this area in schizophrenia patient. Therefore it was suggested that schizophrenia patients may have selective attention problems. This study was conducted to test the hypothesis patients with schizophrenia would fail to activate the anterior cingulate gyrus during selective attention performance. Fourteen schizophrenic patients and fifteen age and sex matched healthy subjects were recruited for the experiment. They were instructed to perform a computer based stroop task in which they have to tell the color of the letters of different words while their brain activity was scanned by positron emission tomography. During the experiment answers of the participants and time taken to answers were recorded to the nearest millisecond. Three types of words randomly displayed on the computer screen. 1. Color matched words (eg. â€Å"red† in red color), 2. Color un-matched words (eg. â€Å"red† in blue color) and neutral words (eg. â€Å"car† in blue color). There was no significant difference between the schizophrenic and healthy groups in time taken to answer. However error rate was significantly higher in schizophrenic patients than that of the healthy group (11.1% Vs 1.9%, p Obesity increases the risk of mortality and morbidity chronic diseases such as diabetes and stroke. Although excess energy intake directly contributed to obesity some animal experiments have shown a relationship with diet composition. This cross sectional study was