- Title
- Neurodevelopmental correlates of the emerging adult self
- Creator
- Davey, Christopher G.; Fornito, Alex; Pujol, Jesus; Breakspear, Michael; Schmaal, Lianne; Harrison, Ben J.
- Relation
- NHMRC.1024570 http://purl.org/au-research/grants/nhmrc/1024570
- Relation
- Developmental Cognitive Neuroscience Vol. 36, Issue April 2019, no. 100626
- Publisher Link
- http://dx.doi.org/10.1016/j.dcn.2019.100626
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2019
- Description
- The self-concept – the set of beliefs that a person has about themselves – shows significant development from adolescence to early adulthood, in parallel with brain development over the same period. We sought to investigate how age-related changes in self-appraisal processes corresponded with brain network segregation and integration in healthy adolescents and young adults. We scanned 88 participants (46 female), aged from 15 to 25 years, as they performed a self-appraisal task. We first examined their patterns of activation to self-appraisal, and replicated prior reports of reduced dorsomedial prefrontal cortex activation with older age, with similar reductions in precuneus, right anterior insula/operculum, and a region extending from thalamus to striatum. We used independent component analysis to identify distinct anterior and posterior components of the default mode network (DMN), which were associated with the self-appraisal and rest-fixation parts of the task, respectively. Increasing age was associated with reduced functional connectivity between the two components. Finally, analyses of task-evoked interactions between pairs of nodes within the DMN identified a subnetwork that demonstrated reduced connectivity with increasing age. Decreased network integration within the DMN appears to be an important higher-order maturational process supporting the emerging adult self.
- Subject
- adolescent development; connectivity; default mode network; functional MRI; self
- Identifier
- http://hdl.handle.net/1959.13/1443816
- Identifier
- uon:42109
- Identifier
- ISSN:1878-9293
- Language
- eng
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