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Dealing with the cochlear implant related artefact in electroencephalographic research

Sismono, F.M. (2015) Dealing with the cochlear implant related artefact in electroencephalographic research. Bachelor's Thesis, Biology.

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Abstract

The cochlear implant (CI) related artefact remains a problem researchers are faced with nowadays when analysing the electroencephalographic (EEG) data of subjects implanted with a CI. The CI related artefact can change when different stimuli are used in an experiment, and can even vary a great deal across participants in the same experiment due to different settings on their devices. This makes it very difficult for EEG researchers to reliably identify and remove the artefact from their data, preventing further analysis in their experiments. In this thesis paper, the complete process of cleaning up EEG data from CI participants will be explained step-by-step in order to come to a full understanding of what it means when working with contaminated EEG data. From filtering to the calculation of event-related potentials, every step is equally important and can have its own effects on the final brain potential figure. Special attention will be given to the CI related artefact, and it will be visualised to give a general idea of its appearance and properties. Different methods of minimizing the CI artefact from previous successful studies will be discussed, including ICA (independent component analysis) and a single-channel approach.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Biology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 08:05
Last Modified: 15 Feb 2018 08:05
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/12872

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