Effects of internal and external vividness on hippocampal connectivity during memory retrieval

Neurobiology of Learning and Memory
Jaclyn Hennessey Ford, Elizabeth A Kensinger

Abstract

Successful memory for an image can be supported by retrieval of one's personal reaction to the image (i.e., internal vividness), as well as retrieval of the specific details of the image itself (i.e., external vividness). Prior research suggests that memory vividness relies on regions within the medial temporal lobe, particularly the hippocampus, but it is unclear whether internal and external vividness are supported by the hippocampus in a similar way. To address this open question, the current study examined hippocampal connectivity associated with enhanced internal and external vividness ratings during retrieval. Participants encoded complex visual images paired with verbal titles. During a scanned retrieval session, they were presented with the titles and asked whether each had been seen with an image during encoding. Following retrieval of each image, participants were asked to rate internal and external vividness. Increased hippocampal activity was associated with higher vividness ratings for both scales, supporting prior evidence implicating the hippocampus in retrieval of memory detail. However, different patterns of hippocampal connectivity related to enhanced external and internal vividness. Further, hippocampal conne...Continue Reading

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Jul 6, 2014·Neurobiology of Aging·Jaclyn H FordElizabeth A Kensinger

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Citations

Oct 6, 2017·Social Cognitive and Affective Neuroscience·Caroline A FigueroaAart H Schene
Mar 22, 2019·Psychological Science·Rose A CooperMaureen Ritchey
Jul 11, 2018·Psychonomic Bulletin & Review·Rose A Cooper, Jon S Simons
Apr 29, 2020·Trends in Cognitive Sciences·Maureen Ritchey, Rose A Cooper

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