Hemispheric Encoding/Retrieval Asymmetry (HERA) Model
The Hemispheric Encoding/Retrieval Asymmetry (HERA) Model states that there is differential involvement of the prefrontal cortex during tasks that involve episodic memory such that the left prefrontal cortex is more activated during retrieval and the right prefrontal cortex is more involved during encoding of episodic memory. This model has been supported by a large body of functional neuroimaging findings.
PODCAST: Big Ideas: Minding Memory What’s in a memory? An original in the field of memory research, Endel Tulving shares his insights. Mental time-travel through what he terms "episodic memory" may have been one of "the drivers of the evolution of culture". A free-wheeling conversation with Marilyn Powell about memory and the mind. From huffduffer.com.
ABSTRACT: Hemispheric encoding/retrieval asymmetry in episodic memory: positron emission tomography findings. Data are reviewed from positron emission tomography studies of encoding and retrieval processes in episodic memory. These data suggest a hemispheric encoding/retrieval asymmetry model of prefrontal involvement in encoding and retrieval of episodic memory. According to this model, the left and right prefrontal lobes are part of an extensive neuronal network that subserves episodic remembering, but the two prefrontal hemispheres play different roles. Left prefrontal cortical regions are differentially more involved in retrieval of information from semantic memory and in simultaneously encoding novel aspects of the retrieved information into episodic memory. Right prefrontal cortical regions, on the other hand, are differentially more involved in episodic memory retrieval. (Tulving, et al., PNAS 1994 vol. 91 no. 6, 2016-2020).
Hemispheric asymmetries of memory: the HERA model revisited
Getting a Grip on Memory: Unilateral Hand Clenching Alters Episodic Recall Event-related fMRI studies of episodic encoding and retrieval: Meta-analyses using activation likelihood estimation