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Measuring attentional allocation : what is the appropriate baseline? An event-related potential study

Winkler, S. (2014) Measuring attentional allocation : what is the appropriate baseline? An event-related potential study.

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Abstract:Electroencephalographical (EEG) measurements have played an important role regarding the understanding of the processes involved in directing, shifting and dividing attention. Several studies indeed employed EEG in the Posner endogenous cueing paradigm to examine these processes. In this study, a variant of this paradigm was used, in which cues were always 100% valid, i.e., cues pointed to the left or the right side where a to be discriminated target was presented. As baseline conditions, two types of trials were used. For one of the trials, a double arrow cue was used that pointed outwards to both sides, whereas for the second type of trials, the arrows pointed inwards. The major goal of this study was to determine whether the type of baseline trial (outward or inward cues) had any effect, as one might argue, that with the outward cue, attention is divided over the relevant sides, while this seems not to be the case for inward cues. EEG was measured from twenty participants that took part in our experiment. Afterwards, behavioral data and EEG data were analyzed. Most important, within the analysis no main differences were found between the baseline condition cues (outward and inward) and the valid cues. According to this, the conclusion was drawn that, based on statistical analysis of behavioral measurement and EEG measurement, the chosen baseline is appropriate.
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/65823
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