The lateralization of anticipatory alpha oscillations while allocating visuospatial attention

Aldiek, Lisa (2015) The lateralization of anticipatory alpha oscillations while allocating visuospatial attention.

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Abstract:The first aim of this study was to examine whether alpha lateralization is linked to spatial attention. It was examined whether the manipulation of cue validity has an influence on the lateralization of alpha synchronization. The second aim of this study was to examine whether predictions regarding performance can be made based on alpha synchronization. To address these questions, 13 participants were presented with an endogenous orienting paradigm. The cues differed in the validity that the stimulus, the respondent had to respond to, was correct predicted by the cue. EEG was measured during the whole experiment and wavelet analyses were applied on the raw EEG. Results of the lateralized power spectra (LPS) data indicates that there is a greater lateralization in the condition with higher spatial certainty compared to the condition with lower spatial certainty and that the alpha band desynchronization was higher at contralateral than on ipsilateral electrodes. Additionally, results indicate that individual performance differences can be predicted by the LPS index of the electrodes. The results found in this study indicate that alpha lateralization is an adequate method to examine 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/68267
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