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Estimation, imagery or computation: low resolution electromagnetic tomography (LORETA) measures brain activity during performance of balance scale tasks

Wetering, Nina (2010) Estimation, imagery or computation: low resolution electromagnetic tomography (LORETA) measures brain activity during performance of balance scale tasks.

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Abstract:The balance scale task is an often studied topic. Whereas these studies are mainly focused on the solving strategies deduced from behavior, present study examined whether solving strategies, like estimation, imagery and computation, can be inferred from activity in brain areas estimated by Low Resolution Electromagnetic Tomography (LORETA). Using electroencephalography (EEG), brain activation was measured in thirteen physics students and fourteen psychology students during predicting the movement of the balance scale of 120 simple balance scale tasks and 120 conflict balance scale tasks. The results show a difference between physics students and psychology students in number of correct predictions in both simple and conflict balance scale tasks. Physics students had a longer reaction time than psychology students in conflict balance scale tasks. In performing simple balance scale tasks physics students and psychology students both had a greater activity in the left angular gyrus and the left inferior frontal cortex, that seem to be responsible for computation than in brain areas, that are assumed to be responsible for estimation and mental imagery. In addition, there was no difference between physics and psychology students in activity in brain areas involved in imagery. In conflict balance scale tasks, physics students had greater bilateral activation in the inferior and superior parietal lobe, including the intraparietal sulcus and the extrastriate middle occipital gyrus and fusiform gyrus, that seem to be responsible for estimation.
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology MSc (66604)
Link to this item:http://purl.utwente.nl/essays/60665
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