A test of the HERA model II: Objects as stimuli

Ruth E. Propper, Stephan Christman

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The Hierarchical Encoding/Retrieval Asymmetry (HERA) model (Nyberg, Cabeza, and Tulving, 1996; Tulving, Kapur, Craik, Moscovitch, and Houle, 1994) suggests that episodic memory involves interhemispheric interaction, while semantic memory is a unilateral phenomenon. However, most studies supporting the model have used stimuli processed preferentially by the left- hemisphere. It was hypothesized that hemispheric processing superiority might influence hemispheric interaction in tests of HERA. Using stimuli, both hemispheres are equally capable of processing pictures. Subjects performed a semantic or an episodic task. Results did not replicate those found using letter strings in an identical paradigm, suggesting that HERA might only be applicable for strongly lateralized information.

Original languageEnglish
Pages (from-to)227-229
Number of pages3
JournalBrain and Cognition
Issue number1
StatePublished - Jun 1999


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