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Determining a sensitive index to measure the allocation of visuospatial attention : an event-related lateralization study

Slijkhuis, P.J.H. (2015) Determining a sensitive index to measure the allocation of visuospatial attention : an event-related lateralization study.

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Abstract:Electroencephalographical (EEG) measurements played an important role in understanding the processes involved in directing, shifting and dividing attention. The present study aimed to find a sensitive index for EEG to measure visuospatial attention. Several studies used EEG in the Posner endogenous cueing paradigm to examine these processes. In this study, a variant of this paradigm was used, with two conditions. One condition in which cues were hundred percent valid and one condition where cues were sixty-six percent valid. The Stimulus Onset Asynchrony (SOA), the difference in time in which the stimuli were masked, was used to measure the relation between spatial attention and subliminal consciousness. EEG was measured from eighteen participants that took part in the experiment, the first five participants were part of a pre-test. Afterwards, behavioural data and EEG data were analysed using repeated measures ANOVAs and t-tests. The results showed that no differences and interactions were found between the lateralizations and the validity conditions. The conclusion was drawn that spatial attention does not have an effect on the performance in different validity conditions. It can even be argued that ERLs, gained with a double subtraction, are not the most sensitive index to measure the allocation of spatial attention.
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/68542
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