Topic
Recognition memory
About: Recognition memory is a research topic. Over the lifetime, 4659 publications have been published within this topic receiving 325946 citations.
Papers published on a yearly basis
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Papers
TL;DR: In this paper, the authors used event-related functional magnetic resonance imaging (fMRI) to test the hypothesis by examining brain activity during sequential encoding of unrelated word pairs, where subjects either made a semantic judgment specific to the target word ("item-specific" trials) or a comparison between the target words and the first word in the pair ("relational" trials).
Abstract: Results from neuroimaging studies of long-term memory (LTM) encoding have contributed to the view that the ventrolateral prefrontal cortex (VLPFC) contributes to successful LTM formation, whereas the dorsolateral prefrontal cortex (DLPFC) does not. We hypothesized that the DLPFC does contribute to LTM, but under specific circumstances. That is, the DLPFC may be critical for building relationships between items during on-line processing, and this may promote LTM for associations between items. We used event-related functional magnetic resonance imaging (fMRI) to test this hypothesis by examining brain activity during sequential encoding of unrelated word pairs. During presentation of the second ("target") word in each pair, subjects either made a semantic judgment specific to the target word ("item-specific" trials), or a semantic judgment that involved a comparison between the target word and the first word in the pair ("relational" trials). Behaviorally, recognition memory for target words was equivalent between the two trial types but associative recognition of studied word pairs was significantly greater for relational trials. fMRI results showed that DLPFC activity was greater during relational compared with item-specific encoding and that DLPFC activity predicted successful memory for associations but not successful item memory. Activity in the VLPFC was also greater for relational compared with item-specific encoding, but VLPFC activation predicted successful memory for both associations and items. These results support the view that the DLPFC may contribute to LTM through its role in active processing of relationships during encoding, whereas the VLPFC may have a more general role in promoting successful LTM formation.
261 citations
TL;DR: In this article, a combined positron emission tomography and event-related potential (ERP) experiment was designed to distinguish between neural correlates of task-related and item-related processes of memory retrieval.
Abstract: In all cognitive tasks, general task-related processes operate throughout a given task on all items, whereas specific item-related processes operate differentially on individual items. In typical functional neuroimaging experiments, these two sets of processes have usually been confounded. Herein we report a combined positron emission tomography and event-related potential (ERP) experiment that was designed to distinguish between neural correlates of task-related and item-related processes of memory retrieval. Two retrieval tasks, episodic and semantic, were crossed with episodic (old/new) and semantic (living/nonliving) properties of individual items to yield evidence of regional brain activity associated with task-related processes, item-related processes, and their interaction. The results showed that episodic retrieval task was associated with increased blood flow in right prefrontal and posterior cingulate cortex, as well as with a sustained right-frontopolar-positive ERP, but that the semantic retrieval task was associated with left frontal and temporal lobe activity. Retrieval of old items was associated with increased blood flow in the left medial temporal lobe and with a brief late positive ERP component. The results provide converging hemodynamic and electrophysiological evidence for the distinction of task- and item-related processes, show that they map onto spatially and temporally distinct patterns of brain activity, and clarify the hemispheric encoding/retrieval asymmetry (HERA) model of prefrontal encoding and retrieval asymmetry.
261 citations
TL;DR: The findings indicate that emotion slows the effects of forgetting on the recollective experience associated with studied events, without necessarily slowing the forgetting of specific contextual details of those events.
259 citations
TL;DR: The present findings show that even when stimuli, tasks and performance appear indistinguishable between young and older adults, neural changes occur in aging with specificity in both the memory type and the brain regions affected.
Abstract: Surprisingly little is known about the neural correlates of remembering real life events in the context of normal aging. We therefore asked young and older adults to retrieve real life autobiographical event memories accrued over decades, while their brains were scanned using functional MRI. There were many commonalities between the groups in the wider network of brain areas active during retrieval. Nevertheless, one key difference emerged; while left hippocampal activation was apparent in the young, bilateral hippocampal activation was evident in older adults and direct comparison between the groups confirmed significantly greater right hippocampal activation in older adults. Notably, this difference was specific to autobiographical event memory retrieval, as the groups were comparable in the areas active during semantic memory retrieval. The present findings show that even when stimuli, tasks and performance appear indistinguishable between young and older adults, neural changes occur in aging with specificity in both the memory type and the brain regions affected. In particular, the results reveal that age-related effects are detectable in the hippocampus. This highlights the need to consider how the dynamic course of normal aging interacts with pathological processes that might also affect the hippocampus. Understanding this relationship may aid prognosis, as well as providing insights into plasticity in the anatomy of memory.
259 citations
TL;DR: Recording simultaneously from 43 to 61 hippocampal pyramidal cells as rats performed an object recognition memory task suggested that objects were represented as points of interest on the hippocampal cognitive map and that this map was useful in remembering encounters with particular objects in specific locations.
Abstract: The hippocampus has been proposed to support a cognitive map, a mental representation of the spatial layout of an environment as well as the nonspatial items encountered in that environment. In the present study, we recorded simultaneously from 43 to 61 hippocampal pyramidal cells as rats performed an object recognition memory task in which novel and repeated objects were encountered in different locations on a circular track. Multivariate analyses of the neural data indicated that information about object identity was represented secondarily to the primary information dimension of object location. In addition, the neural data related to performance on the recognition memory task. The results suggested that objects were represented as points of interest on the hippocampal cognitive map and that this map was useful in remembering encounters with particular objects in specific locations.
259 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 16 |
| 2024 | 35 |
| 2023 | 51 |
| 2022 | 86 |
| 2021 | 145 |
| 2020 | 135 |