Third, a growing number of neuroimaging studies have documented that many of the same brain regions are active during associative/gist-based true #click here randurls[1|1|,|CHEM1|]# and false recognition.34,44,47 Consistent with the foregoing studies, Garoff Eaton et al48 observed extensive overlap in neural activity when participants made false recognition responses to shapes that were visually similar to those that they had studied (ie, during gist-based false recognition). In contrast, there was no neural

overlap between true and false recognition when participants Inhibitors,research,lifescience,medical had false alarms to novel shapes that were unrelated to previously studied shapes, which likely reflected guessing, or other processes that did not reflect gist-based responding. Thus, gist-based false recognition, but not unrelated or “baseline” false recognition, recruits the same regions that are associated with true recognition. Fourth,

neuroimaging studies that Inhibitors,research,lifescience,medical have examined the origins of gist-based or associative false recognition during the process of encoding have likewise provided evidence in line with an adaptive interpretation. For example, it has been demonstrated that levels of gist-based false recognition Inhibitors,research,lifescience,medical of new words from previously studied categories are associated with increased activation of left ventrolateral prefrontal cortex during encoding of categorized words49,50; similar findings have been obtained when participants Inhibitors,research,lifescience,medical encode common objects and later falsely recognize new objects from the same category.51 Critically, these studies also showed that recruitment of left ventrolateral prefrontal cortex is associated with increased subsequent true recognition and earlier work Inhibitors,research,lifescience,medical linked this region with semantic or elaborative encoding processes.52 Taken together, the

foregoing findings provide an empirical basis for arguing that semantic elaboration processes during encoding, which serve the adaptive function of promoting long-term retention, can also contribute to memory distortion. Finally, a closely related line of evidence comes from a recent fMRI study that applied the same kind of encoding-based analysis described in the aforementioned studies to false recognition of contextual associations. Aminoff and et al53 had participants encode a series of object pairs while in the scanner by trying to mentally relate the objects to a context. The pairs consisted of either two contextually related objects that belong to the same context, such as a bulldozer and a yellow construction cone, or two objects that are typically not associated with a specific context or contextually related to each other, such as a camera and a pair of scissors.