Spiking activity in the human hippocampus prior to encoding predicts subsequent memory Article Swipe
Zhisen J. Urgolites
,
John T. Wixted
,
Stephen D. Goldinger
,
Megan H. Papesh
,
David M. Treiman
,
Larry R. Squire
,
Peter N. Steinmetz
·
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1073/pnas.2001338117
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1073/pnas.2001338117
Encoding activity in the medial temporal lobe, presumably evoked by the presentation of stimuli (postonset activity), is known to predict subsequent memory. However, several independent lines of research suggest that preonset activity also affects subsequent memory. We investigated the role of preonset and postonset single-unit and multiunit activity recorded from epilepsy patients as they completed a continuous recognition task. In this task, words were presented in a continuous series and eventually began to repeat. For each word, the patient’s task was to decide whether it was novel or repeated. We found that preonset spiking activity in the hippocampus (when the word was novel) predicted subsequent memory (when the word was later repeated). Postonset activity during encoding also predicted subsequent memory, but was simply a continuation of preonset activity. The predictive effect of preonset spiking activity was much stronger in the hippocampus than in three other brain regions (amygdala, anterior cingulate, and prefrontal cortex). In addition, preonset and postonset activity around the encoding of novel words did not predict memory performance for novel words (i.e., correctly classifying the word as novel), and preonset and postonset activity around the time of retrieval did not predict memory performance for repeated words (i.e., correctly classifying the word as repeated). Thus, the only predictive effect was between preonset activity (along with its postonset continuation) at the time of encoding and subsequent memory. Taken together, these findings indicate that preonset hippocampal activity does not reflect general arousal/attention but instead reflects what we term “attention to encoding.”
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1073/pnas.2001338117
- https://www.pnas.org/content/pnas/117/24/13767.full.pdf
- OA Status
- bronze
- Cited By
- 31
- References
- 35
- Related Works
- 10
- OpenAlex ID
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https://openalex.org/W3032160040Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1073/pnas.2001338117Digital Object Identifier
- Title
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Spiking activity in the human hippocampus prior to encoding predicts subsequent memoryWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2020Year of publication
- Publication date
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2020-06-01Full publication date if available
- Authors
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Zhisen J. Urgolites, John T. Wixted, Stephen D. Goldinger, Megan H. Papesh, David M. Treiman, Larry R. Squire, Peter N. SteinmetzList of authors in order
- Landing page
-
https://doi.org/10.1073/pnas.2001338117Publisher landing page
- PDF URL
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https://www.pnas.org/content/pnas/117/24/13767.full.pdfDirect link to full text PDF
- Open access
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YesWhether a free full text is available
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-
bronzeOpen access status per OpenAlex
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https://www.pnas.org/content/pnas/117/24/13767.full.pdfDirect OA link when available
- Concepts
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Hippocampus, Encoding (memory), Brain activity and meditation, Psychology, Task (project management), Neuroscience, Temporal lobe, Hippocampal formation, Recall, Recognition memory, Cognitive psychology, Cognition, Electroencephalography, Epilepsy, Economics, ManagementTop concepts (fields/topics) attached by OpenAlex
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31Total citation count in OpenAlex
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2025: 2, 2024: 6, 2023: 4, 2022: 11, 2021: 5Per-year citation counts (last 5 years)
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35Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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