An electrophysiological investigation of memory encoding, depth of processing, and word frequency in humans

Chunyan Guo*, Ying Zhu, Jinhong Ding, Silu Fan, Ken A. Paller

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Memory encoding can be studied by monitoring brain activity correlated with subsequent remembering. To understand brain potentials associated with encoding, we compared multiple factors known to affect encoding. Depth of processing was manipulated by requiring subjects to detect animal names (deep encoding) or boldface (shallow encoding) in a series of Chinese words. Recognition was more accurate with deep than shallow encoding, and for low- compared to high-frequency words. Potentials were generally more positive for subsequently recognized versus forgotten words; for deep compared to shallow processing; and, for remembered words only, for low- than for high-frequency words. Latency and topographic differences between these potentials suggested that several factors influence the effectiveness of encoding and can be distinguished using these methods, even with Chinese logographic symbols.

Original languageEnglish (US)
Pages (from-to)79-82
Number of pages4
JournalNeuroscience Letters
Volume356
Issue number2
DOIs
StatePublished - Feb 12 2004

Keywords

  • Difference based on subsequent memory performance
  • Event related potential
  • Subsequent memory effects

ASJC Scopus subject areas

  • Neuroscience(all)

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