Memory changes with normal aging: Behavioral and electrophysiological measures

Carrie A. Joyce, Ken A. Paller, Heather K. McIsaac, Marta Kutas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

We examined performance in young and elderly on an implicit (lexical decision) and an explicit (recognition) memory test. The difference in lexical decision times between old and new words was equivalent in the two groups, although the elderly were slower. In both groups, recognition accuracy (lower in the elderly) was higher following semantic than nonsemantic encoding, whereas lexical decision times were unaffected. Divergent brain potentials for old and new words during lexical decisions constituted a repetition effect, which reflected greater positivity (200-800 ms) for old words, particularly over the left hemisphere; this effect was smaller and later in the elderly. An electrophysiological marker of enhanced recollection for words from the semantic encoding task took the form of a left-sided positivity (500-800 ms). The effect was smaller in the elderly than the young, providing an additional index of their impaired recognition processes.

Original languageEnglish (US)
Pages (from-to)669-678
Number of pages10
JournalPsychophysiology
Volume35
Issue number6
DOIs
StatePublished - 1998

Keywords

  • Aging
  • ERP
  • Levels of processing
  • Lexical decision
  • Memory

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Neurology
  • Endocrine and Autonomic Systems
  • Developmental Neuroscience
  • Cognitive Neuroscience
  • Biological Psychiatry

Fingerprint Dive into the research topics of 'Memory changes with normal aging: Behavioral and electrophysiological measures'. Together they form a unique fingerprint.

Cite this