Distinct patterns of hippocampal activity associated with color and spatial source memory

Hippocampus ◽  
2021 ◽  
Author(s):  
Haley A. Fritch ◽  
Preston P. Thakral ◽  
Scott D. Slotnick ◽  
Robert S. Ross
Keyword(s):  
Source Memory ◽  
Hippocampal Activity ◽  
Spatial Source

Neural correlates of spatial source memory encoding in young and elderly adults

2008 ◽  
Vol 69 (3) ◽  
pp. 234
Author(s):  
S. Cansino ◽  
C. Estrada-Manilla ◽  
P. Trejo-Morales ◽  
E. Aguilar ◽  
E. Pasaye ◽  
...  
Keyword(s):  
Source Memory ◽  
Neural Correlates ◽  
Memory Encoding ◽  
Elderly Adults ◽  
Spatial Source

scholarly journals In Search of Recollection and Familiarity Signals in the Hippocampus

2010 ◽  
Vol 22 (1) ◽  
pp. 109-123 ◽  
Author(s):  
Peter E. Wais ◽  
Larry R. Squire ◽  
John T. Wixted
Keyword(s):  
Prefrontal Cortex ◽  
Recognition Memory ◽  
Source Memory ◽  
Medial Temporal Lobe ◽  
Parahippocampal Gyrus ◽  
Memory Strength ◽  
Similar Extent ◽  
High Confidence ◽  
Hippocampal Activity ◽  
Memory Experiment

fMRI studies of recognition memory have often been interpreted to mean that the hippocampus selectively subserves recollection and that adjacent regions selectively subserve familiarity. Yet, many of these studies have confounded recollection and familiarity with strong and weak memories. In a source memory experiment, we compared correct source judgments (which reflect recollection) and incorrect source judgments (often thought to reflect familiarity) while equating for old–new memory strength by including only high-confidence hits in the analysis. Hippocampal activity associated with both correct source judgments and incorrect source judgments exceeded the activity associated with forgotten items and did so to a similar extent. Further, hippocampal activity was greater for high-confidence old decisions relative to forgotten items even when source decisions were at chance. These results identify a recollection signal in the hippocampus and may identify a familiarity signal as well. Similar results were obtained in the parahippocampal gyrus. Unlike in the medial temporal lobe, activation in prefrontal cortex increased differentially in association with source recollection.

The hippocampus operates in a threshold manner during spatial source memory

Neuroreport ◽  
2013 ◽  
Vol 24 (5) ◽  
pp. 265-269 ◽  
Author(s):  
Scott D. Slotnick ◽  
Preston P. Thakral
Keyword(s):  
Source Memory ◽  
Spatial Source

scholarly journals Hippocampal activity during recognition memory co-varies with the accuracy and confidence of source memory judgments

Hippocampus ◽  
2011 ◽  
Vol 22 (6) ◽  
pp. 1429-1437 ◽  
Author(s):  
Sarah S. Yu ◽  
Jeffrey D. Johnson ◽  
Michael D. Rugg
Keyword(s):  
Recognition Memory ◽  
Source Memory ◽  
Hippocampal Activity

scholarly journals Dissociable medial temporal pathways for encoding emotional item and context information

2018 ◽  
Author(s):  
Maureen Ritchey ◽  
Shao-Fang Wang ◽  
Andrew P. Yonelinas ◽  
Charan Ranganath
Keyword(s):  
Source Memory ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Medial Temporal Lobes ◽  
Temporal Lobes ◽  
Double Dissociation ◽  
Parahippocampal Cortex ◽  
Hippocampal Activity ◽  
Amygdala Activity

AbstractEmotional experiences are typically remembered with a greater sense of recollection than neutral experiences, but memory benefits for emotional items do not typically extend to their source contexts. Item and source memory have been attributed to different subregions of the medial temporal lobes (MTL), but it is unclear how emotional item recollection fits into existing models of MTL function and, in particular, what is the role of the hippocampus. To address these issues, we used high-resolution functional magnetic resonance imaging (fMRI) to examine MTL contributions to successful emotional item and context encoding. The results showed that emotional items were recollected more often than neutral items. Whereas amygdala and perirhinal cortex (PRC) activity supported the recollection advantage for emotional items, hippocampal and parahippocampal cortex activity predicted subsequent source memory for both types of items, reflecting a double dissociation between anterior and posterior MTL regions. In addition, amygdala activity during encoding modulated the relationships of PRC activity and hippocampal activity to subsequent item recollection and source memory, respectively. Specifically, whereas PRC activity best predicted subsequent item recollection when amygdala activity was relatively low, hippocampal activity best predicted source memory when amygdala activity was relatively high. We interpret these findings in terms of complementary compared to synergistic amygdala-MTL interactions. The results suggest that emotion-related enhancements in item recollection are supported by an amygdala-PRC pathway, which is separable from the hippocampal pathway that binds items to their source context.

Memory for drawings in locations: Spatial source memory and event-related potentials

2000 ◽  
Vol 37 (4) ◽  
pp. 551-564 ◽  
Author(s):  
Cyma Petten ◽  
Ava J. Senkfor ◽  
Wendy M. Newberg
Keyword(s):  
Source Memory ◽  
Event Related Potentials ◽  
Related Potentials ◽  
Spatial Source

Positive Arousal Enhances the Consolidation of Item Memory

2015 ◽  
Vol 74 (2) ◽  
pp. 91-104 ◽  
Author(s):  
Bo Wang
Keyword(s):  
Episodic Memory ◽  
Memory Consolidation ◽  
Source Memory ◽  
Emotional Arousal ◽  
Theoretical Models ◽  
Memory Test ◽  
Learning Phase ◽  
Item Memory ◽  
Memory Tests ◽  
Immediate Memory

Emotional arousal induced after learning has been shown to modulate memory consolidation. However, it is unclear whether the effect of postlearning arousal can extend to different aspects of memory. This study examined the effect of postlearning positive arousal on both item memory and source memory. Participants learned a list of neutral words and took an immediate memory test. Then they watched a positive or a neutral videoclip and took delayed memory tests after either 25 minutes or 1 week had elapsed after the learning phase. In both delay conditions, positive arousal enhanced consolidation of item memory as measured by overall recognition. Furthermore, positive arousal enhanced consolidation of familiarity but not recollection. However, positive arousal appeared to have no effect on consolidation of source memory. These findings have implications for building theoretical models of the effect of emotional arousal on consolidation of episodic memory and for applying postlearning emotional arousal as a technique of memory intervention.

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