Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.653483
Title: Event-related EEG correlations between physically isolated participants
Author: Kittenis, M. D.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2008
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Abstract:
This thesis is an attempt to evaluate findings previously reported in the scientific literature, suggesting the presence of event-related correlations in electrical brain activity between physically isolated human participants. A series of three experimental studies has been designed and conducted using an experimental procedure and analytical methodology which remain largely constant across the three studies, so that their results can be comparable and cumulative. Each of these three experiments involves the randomly timed photic stimulation of one participant, to test the question whether event-related changes in the EEG activity of another, physically isolated (and non-stimulated) participant can be identified. An additional question investigated is whether certain variables show a relationship with any such event-related EEG correlations found between participants, as suggested in previous studies. In each of the first two studies, three groups of participants were recruited; participant pairs who knew each other well, randomly matched pairs of strangers and single participants not matched with a photically stimulated partner. In both these studies, significant differences were found in measures of evoked-alpha global field power from non-stimulated subjects in related pairs, between periods of photic stimulation of their partners and randomly sampled control periods of no stimulation. Similar effects were not found in randomly matched pairs, or in unmatched control subjects. Although these findings appear to suggest the presence of event-related correlations in brain activity between related participant pairs, the temporal characteristics of the observed changes in EEG activity in non-stimulated subjects are not entirely compatible with such an interpretation. In the final study, only related pairs of participants were recruited and a variation of the experimental paradigm was adopted in order to increase the overall sample size; no evidence of a similar effect was found in this study however. Possible interpretations of the overall findings from the three studies are finally discussed.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.653483  DOI: Not available
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