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Title: The plastic self : investigating the processes of self-face recognition
Author: Payne, Sophie
ISNI:       0000 0004 8499 4136
Awarding Body: Royal Holloway, University of London
Current Institution: Royal Holloway, University of London
Date of Award: 2017
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This thesis investigates self-face recognition and the plasticity of self-representations through several different behavioural and brain stimulation manipulations. The experiments in Chapters 3 and 4 explore the involvement of the temporoparietal area in self-other discrimination processes. Using transcranial direct current stimulation (tDCS) to modulate neural excitability in this region, the experiments in these chapters explore self-other face discrimination and mental body rotation. Enhancing neural excitability in this area appears to enhance familiar other-recognition and the ability to take another's spatial perspective. Chapters 5 and 6 target brain areas associated with multisensory bodily illusions with tDCS, and investigate their involvement in self-updating. Chapter 5 explores the contribution of the intraparietal sulcus to multisensory integration during the Enfacement illusion. Chapter 6 investigates the effect of tDCS on somatosensory cortex during a modified enfacement illusion paradigm to investigate self-updating. Chapters 7 and 8 explore the novel use of a self-association paradigm to update bodily and conceptual aspects of self. The experiments in these chapters demonstrate that a previously unfamiliar face can be incorporated into the conceptual self-representation. Chapter 7 investigates the existence of a bidirectional modulatory link between conceptual and bodily aspects of self, and found that changes to the conceptual self did not have an effect on the bodily self-representation. The experiment in Chapter 8 investigates the nature of the association created between the self-representation and the novel face in Chapter 7 by testing whether the newly associated face affects recognition of well-established perceptual and conceptual aspects of self.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available