RESEARCH ARTICLE


Enhanced Power Within the Default Mode Network in Normal Subjects with Elevated Scores on an Egocentric Scale



Mark W.G Collins a, Michael A Persinger a, b, *
a Department of Psychology, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada
b Behavioural Neuroscience Program, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada


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© Collins and Persinger; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Psychology, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada; Tel: 01-705-675-4824; Fax: 01-705-671-3844; E-mail: mpersinger@laurentian.ca


Abstract

Integrated global power from the primary structures that composed the Default Mode Network (DMN) and from a random collection of other structures were measured by sLORETA (standardized low-resolution electromagnetic tomography) for young university volunteers who had completed an inventory that contained a subscale by which egocentricity has been inferred. Subjects who exhibited higher scores for egocentricity displayed significantly more power within the DMN structures relative to comparison areas. This was not observed for individuals whose egocentricity scores were lowest where the power differences between the DMN and comparison structures were not significant statistically. DMN power was greater in the right hemisphere than the left for men but greater in the left hemisphere than the right for women. The results are consistent with our operating metaphor that elevation of power or activity within the DMN is associated with greater affiliation with the self and its cognitive contents.

Keywords: Default mode network, Egocentricism, Gender differences, Psychometric Measurement, Quantitative electroencephalography, sLORETA.