Analysis of patterns of neural activity in response to auditory stimuli

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dc.contributor.authorHambrook, Dillon A.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorTata, Matthew S.
dc.contributor.supervisorLuczak, Artur
dc.date.accessioned2014-10-29T20:07:07Z
dc.date.available2014-10-29T20:07:07Z
dc.date.issued2013
dc.degree.levelMastersen_US
dc.degree.levelMasters
dc.descriptionvi, 49 leaves ; 29 cmen_US
dc.description.abstractIt is usually easy to understand speech, but when several people are talking at once it becomes difficult. The brain must select one speech stream and ignore distracting streams. This thesis tested a theory about the neural and computational mechanisms of attentional selection. The theory is that oscillating signals in brain networks phase-lock with amplitude fluctuations in speech. By doing this, brain-wide networks acquire information from the selected speech, but ignore other speech signals on the basis of their non-preferred dynamics. Two predictions were supported: first, attentional selection boosted the power of neuroelectric signals that were phase-locked with attended speech, but not ignored speech. Second, this phase selectivity was associated with better perception for the attended speech. We also describe a novel analysis of neuroelectric responses in complex auditory scenes, and suggest a new model of auditory distraction that is consistent with some unexpected results.en_US
dc.identifier.urihttps://hdl.handle.net/10133/3579
dc.language.isoen_CAen_US
dc.proquest.subject0317en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Neuroscience, 2013en_US
dc.publisher.departmentDepartment of Neuroscienceen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectSelective listeningen_US
dc.subjectSpeech perceptionen_US
dc.subjectBrainen_US
dc.subjectNeural activityen_US
dc.subjectAuditory stimulien_US
dc.subjectDissertations, Academicen_US
dc.subjectMultiple speech streams
dc.subjectNeural oscillation
dc.subjectSpeech perception -- Research
dc.subjectAuditory perception
dc.subjectSelectivity (Psychology)
dc.subjectHuman information processing
dc.titleAnalysis of patterns of neural activity in response to auditory stimulien_US
dc.typeThesisen_US
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