For instance, some functional magnetic resonance imaging (fMRI) studies have shown that, when both encoding and retrieval are controlled in the laboratory, retrieval-related activity in the HF declines from immediate to delayed test with even a 1-day delay (Bosshardt et al., 2005a; Takashima et al., 2006, 2009; but see Stark and Squire, 2000).
Information retrieval is a pivotal activity in TEL, and the deployment of recommender systems has attracted increased interest during the past years.
Given that vivid remembering leads to high-confidence retrieval decisions, it is unclear whether activity in these regions reflects episodic long-term memory, or is merely associated with retrieval confidence.
Some of these are regions involved in the on-line processing of affective information, and we hypothesise that they act to modulate activity in the episodic retrieval system.
The procedural strategy produced significant greater activity in areas involved in memory retrieval (dorsolateral prefrontal cortex, DLPFC) and mental representation/maintenance (posterior parietal cortex, PPC).
Color processing was associated with activity in inferior frontal gyrus during encoding and retrieval, whereas angle processing involved right parietal regions during the delay interval.
Color processing was associated with activity in ITC and IFG during encoding and retrieval, whereas angle processing involved right parietal regions during the delay interval.
The scans also showed that the imagery task performed after ayahuasca intake was associated with increased activity in the parahippocampal gyrus, which is involved in retrieval of autobiographical memories and encoding of contextual knowledge, and the frontopolar prefrontal cortex, which is implicated in working memory and imaging future events.
Rather than an encoding/retrieval flip and regardless of encoding orientation (Int-Enc/Ext-Enc), increased activity in HF was not only associated with successful retrieval, but also with successful encoding.
For retrieval of the untrained stimuli there was an intervention related increased activity in the right hippocampal.
