PREDICTING THE IRRELEVANT: HOW EXPECTATION BIASES SENSORY PROCESSING

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dc.contributor.advisorStokes, Mark
dc.contributor.advisorJensen, Ole
dc.contributor.authorLautz, Alexander, von
dc.date.issued2014-09-15
dc.description.abstractGoal directed behaviour requires selective attention, the process of biasing perception in favour of task-relevant information. Prior knowledge in the form of experience-based expec­tations heavily infiuences this function. Although task-irrelevant stimuli appear to recruit similar cognitive resources, recent research indicates that facilitation of targets and inhibition of distractors may constitute separate mechanisms that are likely to exhibit distinct patterns of neuronal activity prior to stimulus onset. Here we explored the role of expectations for target and distractor processing with magneto- and electroencephalography (MEG/EEG). In a visual discrimination task we modulated the expected location of relevant and irrelevant stimuli separately to differentiate stimulus specific changes. We found differences in pre­stimulus alpha power lateralization between targets and distractors when expectations about the upcoming location had been built up. Moreover, using a model-based stimulus decoding approach, we could identify quadrant specific patterns in the alpha band prior to stimulus on­set. We speculate that this may be indicative of distinct processes underlying the perception of relevant and irrelevant input.en_US
dc.embargo.lift2039-09-15
dc.identifier.urihttp://theses.ubn.ru.nl/handle/123456789/5140
dc.language.isoenen_US
dc.thesis.facultyFaculteit der Sociale Wetenschappenen_US
dc.thesis.specialisationResearchmaster Cognitive Neuroscienceen_US
dc.thesis.studyprogrammeResearchmaster Cognitive Neuroscienceen_US
dc.thesis.typeResearchmasteren_US
dc.titlePREDICTING THE IRRELEVANT: HOW EXPECTATION BIASES SENSORY PROCESSINGen_US
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