The ERP correlates of self-knowledge in ageing.
Self-knowledge is a type of personal semantic knowledge that concerns one's self-image and personal identity. It has most often been operationalized as the summary of one's personality traits ("I am a stubborn person"). Interestingly, recent studies have revealed that the neural correlates of self-k...
| Publicado en: | Memory & Cognition Vol. 50; no. 3; pp. 564 - 586 |
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| Autores principales: | , , , , , , |
| Formato: | Artículo |
| Publicado: |
Springer Nature
Apr2022
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=155889103&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 155889103 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 0090502X MEG jtl: Memory & Cognition issn: 0090502X maglogo: N pubinfo: dt: Apr2022 vid: 50 iid: 3 pid: 237 pub: Springer Nature artinfo: ui: 155889103 10.3758/s13421-021-01225-7 ppf: 564 ppct: 22 formats: fmt: – @attributes: type: T – @attributes: type: P size: 3.9MB tig: atl: The ERP correlates of self-knowledge in ageing. aug: au: Tanguay, Annick F. N. Johnen, Ann-Kathrin Markostamou, Ioanna Lambert, Rachel Rudrum, Megan Davidson, Patrick S. R. Renoult, Louis affil: School of Psychology, University of Ottawa, Ottawa, ON, Canada School of Psychology, University of East Anglia, Norwich, UK School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK su: Semantics Personality Recognition (Psychology) Self-perception Age distribution Cognition Psychology Task performance Undergraduates Aging Intellect Episodic memory Adults Old age Adolescence Evoked potentials (Electrophysiology) Neural pathways Electroencephalography Comparative studies sug: subj: Semantics Personality Recognition (Psychology) Self-perception Age distribution Cognition Psychology Task performance Undergraduates Aging Intellect Episodic memory Adults Old age Adolescence Evoked potentials (Electrophysiology) Neural pathways Electroencephalography Comparative studies keyword: Ageing Event-related potentials Semantic memory Ageing Event-related potentials Semantic memory ab: Self-knowledge is a type of personal semantic knowledge that concerns one's self-image and personal identity. It has most often been operationalized as the summary of one's personality traits ("I am a stubborn person"). Interestingly, recent studies have revealed that the neural correlates of self-knowledge can be dissociated from those of general semantic and episodic memory in young adults. However, studies of "dedifferentiation" or loss of distinctiveness of neural representations in ageing suggest that the neural correlates of self-knowledge might be less distinct from those of semantic and episodic memory in older adults. We investigated this question in an event-related potential (ERP) study with 28 young and 26 older adults while they categorised personality traits for their self-relevance (self-knowledge conditions), and their relevance to certain groups of people (general semantic condition). Participants then performed a recognition test for previously seen traits (episodic condition). The amplitude of the late positive component (LPC), associated with episodic recollection processes, differentiated the self-knowledge, general semantic, and episodic conditions in young adults, but not in older adults. However, in older adults, participants with higher composite episodic memory scores had more differentiated LPC amplitudes across experimental conditions. Moreover, consistent with the fact that age-related neural dedifferentiation may be material and region specific, in both age groups some differences between memory types were observed for the N400 component, associated with semantic processing. Taken together, these findings suggest that declarative memory subtypes are less distinct in ageing, but that the amount of differentiation varies with episodic memory function. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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