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Understanding the social and perceptual salience

Tallat, Ghazala (2011)
M.Res. thesis, University of Birmingham.

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Abstract

The distinctive feature of stimuli related to self, as compared to the familiar or unfamiliar others, is supposed to be largely dependent on the social salience of the stimuli. 17 participants participated for the part of behavioural task only of experiment. To test the role of social salience by using novel arbitrary shapes, we found a rapid learning of self related visual associations relative to friend or other. Participants were supposed to learn the association of labels for self, friend and other with different geometrical shapes. Their task was to correctly judge the label-shape matching. We found evidence of substantial advantage of social salience of the self-relevant stimuli as compared to friend (familiar) or other (unfamiliar) even if the stimulus was irrelevant to the task at hand.

The effects of low frequency of repetitive Tanscranial Magnetic Stimulation (rTMS) at right and left posterior parietal cortex were also studied using the social salience and hierarchical levels of stimulus. 10 participants were administered low level of 1Hz rTMS before they identified local and global target levels of stimuli. We found a significant difference in the pre and post TMS performance of the subjects on congruency conditions. We also found right and left hemisphere differences on the category of shape but did not get significance for target level i.e., global to local interference.

Type of Work:M.Res. thesis.
Supervisor(s):Humphreys, Glyn W.
School/Faculty:Colleges (2008 onwards) > College of Life & Environmental Sciences
Department:School of Psychology
Keywords:social salience, self-relevance, hierarchical levels, learning, association, congruency.
Subjects:BF Psychology
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Institution:University of Birmingham
ID Code:3102
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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