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α-Band lateralization to determine the validity of EEG as a method for measuring vigilance

Regelink, M. (2017) α-Band lateralization to determine the validity of EEG as a method for measuring vigilance.

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Abstract:Vigilance is defined as the capacity to monitor for changes by maintaining focus. Measuring the vigilant state using self-report or behavioral observations is limited. A solution is using electroencephalogram (EEG) to directly measure brain activity. By considering the α-power and comparing the hemispheres using a lateralization index it was attempted to determine whether EEG can be used as a valid method to determine the vigilant state. Three participants were included using a small-n-randomization design. It was expected that a decrease in contralateral α-power would appear when focused. For the effect of the attended visual field on the visual cortex indices, the overall results showed the opposite effect: contralateral α-power increase appeared when focused. For the effect of the used index finger on the motor cortex there was contralateral alpha decrease when the participant focused. For both effects, it could not be determined whether the changes predicted performance. Therefore, it could not be concluded whether EEG was a valid method to determine the vigilant state. To answer the research question and to make predictions on the behavioral data using EEG, in the future it is advised to include more participants as this would enable the use of several additional statistical methods.
Item Type:Essay (Bachelor)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology BSc (56604)
Link to this item:http://purl.utwente.nl/essays/72597
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