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The Study Of Dual Cognitive Taske With Limb Muscle-motor Performance

Posted on:2005-08-05Degree:MasterType:Thesis
Country:ChinaCandidate:W W YangFull Text:PDF
GTID:2144360125952511Subject:Biomedical engineering
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The Event related potential (ERP) was to solve emphatically relevant problems between cognition and brain, in other words, it study brain thinking in the electrophysiology. ERP was psychological factor participate in endogenous long latency evoked potential. It was Considered that a" window" where the information of human brain was processed. Further investigation in ERP was beneficial to understand the importance in neuron interaction different situations and inside mechanism in human brain.Traditionally, motor and cognitive functions had been studied separately. However, recent evidences show that the motor cortex was involved in processing cognitive information related to motor function123. Investigating ERPS provides a means of elucidating the (l)Cognitive processes involved. (2)The functional architecture of the brain.Subject: This project was to use non-invasive electrophysiological techniques to record brain activity and behavioural measures during performance of a single and dual task paradigm with varying task demands. It also to study the underlying neuronal mechanisms and how neuronal interactions vary under different conditions. This investigation combines with motor and cognitive tasks in order to study the components of cognitive processing associated with motor activities.Methods: we design 7 tasks, including 3 single tasks and 4 dual tasks. 14 participants, aged between 18 and 45 years, were selected to take part in this test. The study was a repeat measure, each participant taking part in 20 same tests. Participants responses were collected using the Neuroscan Medical Systems. Total 98 files, each of files contain 3000 X 27 X 20 data. Based on Data mining, PrincipalComponent Analysis was used for statistical analysis of all the data, using Matlab and SAS tool software.Results and Conclusion: The results show that, T5 and T3 was active spot when auditory single Task was executed. When motor single task was executed the active spot was FP1, which also had the change along with the complex movement. When dual tasks were executed the FP1, T3 and T5 were actived, which had the same change similarly to motor single task. Our results suggest when the motor performance and cognitive tasks respond synchronizely, the different neuron group in brain cerebral cortex was activated. Along with stimulating the complex change, according to the thought capacity limited principle, had an activated redistribution and the change of energy intensity. Thus the location in the cerebral cortex distribution determine activated neuron group, the cognition process activated had been provided for the research in the nerve mechanism.This study improves a new stimulates and a new data takeoff method and overcomes the traditional accumulation even equal statistical analysis method lack in analysis information, and located spot. Our study provide the new method for the further medical research like human motor physiology, therefore has a good practical value.
Keywords/Search Tags:event related potential, dual tasks, cerebral cortex, principal component analysis, data mining
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