Functional role of the prefrontal cortex in retrieval of memories: a PET study

  title={Functional role of the prefrontal cortex in retrieval of memories: a PET study},
  author={Shitij Kapur and Fergus I. M. Craik and Corey Jones and Gregory M. Brown and Sylvain Houle and Endel Tulving},
Retrieval of information from episodic memory involves the processes invoked by the attempt to remember (retrieval attempt) as well as processes associated with the successful retrieval of stored information (ecphory). Previous PET studies of memory have shown an activation of the prefrontal cortex in memory retrieval tasks, and we hypothesised that this activation represents retreival attempt, not ecphory. This hypothesis was directly directed using [15O]H2 PET imaging in 19 healthy subjects… 

Right prefrontal cortex and episodic memory retrieval: a functional MRI test of the monitoring hypothesis.

This functional MRI study of 12 healthy volunteers tested the hypothesis that one role of the right prefrontal cortex is to monitor the information retrieved from episodic memory in order to make an appropriate response.

Memory retrieval and the parietal cortex: A review of evidence from a dual-process perspective

The Role of Prefrontal Cortex in Verbal Episodic Memory: rTMS Evidence

The results indicate that the nature of the material to be remembered interacts with the encodingretrieval DLPFC asymmetry; moreover, the crucial role of DLP FC is evident only for novel stimuli.

Memory retrieval under the control of the prefrontal cortex.

Findings suggest that the prefrontal cortex can regulate the recall of long-term memory in the absence of bottom-up sensory inputs.

Selective activation of the ventrolateral prefrontal cortex in the human brain during active retrieval processing

By strictly controlling the level of encoding, postretrieval monitoring, and decision making, the present study has demonstrated a specific increase in the ventrolateral prefrontal region that could be clearly related to active retrieval processing, i.e. the active selection of particular stored visual representations.

PET studies of encoding and retrieval: The HERA model

We review positron emission tomography (PET) studies whose results converge on the hemispheric encoding/retrieval asymmetry (HERA) model of the involvement of prefrontal cortical regions in the

Prefrontal cortex and recognition memory. Functional-MRI evidence for context-dependent retrieval processes.

These experiments suggest that right prefrontal regions mediate processes associated with retrieval attempt, with the probability of engaging these regions depending upon the retrieval context.

On the Relations among Priming, Conscious Recollection, and Intentional Retrieval: Evidence from Neuroimaging Research

Evidence indicating that priming, a form of implicit retrieval, is associated with decreased activity in various cortical regions is considered, as well as evidence suggesting that two components of explicit retrieval-intentional or effortful search and successful conscious recollection-are preferentially associated with increased activity in prefrontal and medial temporal regions.

Episodic retrieval and the cortical binding of relational activity

  • A. Shimamura
  • Psychology, Biology
    Cognitive, affective & behavioral neuroscience
  • 2011
A review of the neural correlates of episodic retrieval is presented along with a new theory, cortical binding of relational activity (CoBRA), which says the vPPC acts as a convergence zone that binds episodic features stored in disparate neocortical regions.