Hemispheric Asymmetries in Electroencephalogram Oscillations for Long-Term Memory Retrieval in Healthy Individuals

Soyiba Jawed, Hafeez Ullah Amin, Aamir Saeed Malik, Ibrahima Faye

Research output: Contribution to journalArticle (journal)peer-review

Abstract

The hemispherical encoding retrieval asymmetry (HERA) model, established in 1991, suggests that the involvement of the right prefrontal cortex (PFC) in the encoding process is less than that of the left PFC. The HERA model was previously validated for episodic memory in subjects with brain traumas or injuries. In this study, a revised HERA model is used to investigate long-term memory retrieval from newly learned video-based content for healthy individuals using electroencephalography. The model was tested for long-term memory retrieval in two retrieval sessions: (1) recent long-term memory (recorded 30 min after learning) and (2) remote long-term memory (recorded two months after learning). The results show that long-term memory retrieval in healthy individuals for the frontal region (theta and delta band) satisfies the revised HERA asymmetry model.

Original languageAmerican English
Article number937
Pages (from-to)1-11
Number of pages11
JournalBrain Sciences
Volume10
Issue number12
DOIs
Publication statusPublished - 4 Dec 2020

Keywords

  • Electroencephalography
  • Hemispherical encoding retrieval asymmetry
  • Long-term memory
  • Recent long-term memory
  • Remote long-term memory

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