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41 results for “episodic memory”
FeedBES - FeedBack signals from Episodic and Semantic memories.
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Neural Overlap in Item Representations Across Episodes Impairs Context Memory
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Neural Evidence of the Strategic Choice Between Working Memory and Episodic Memory in Prospective Remembering.
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Raw data for "Examining the effects of transcranial direct current stimulation on human episodic memory with machine learning"
<p>This is the raw dataset for "Examining the effects of transcranial direct current stimulation on human episodic memory with machine learning". Each .xlsx file represents an experimental results of a single participant.</p> <p>Directory description:</p> <p>Eng_sham - the results from experiments without stimulation on English sample from Medvedeva, 2019.</p> <p>Eng_vlPFC - the results from experiments with vLPFC stimulation on English sample from Medvedeva, 2019.</p> <p>enc_off_new - the results from experiments with dLPFC offline encoding stimulation on Russian sample.</p> <p>enc_on_new - the results from experiments with dLPFC online encoding stimulation on Russian sample.</p> <p>sham_no stimulation - the results from experiments without stimulation offline encoding stimulation on Russian sample.</p> <p>vlPFC_stimulation - the results from experiments with vLPFC stimulation on Russian sample.</p> <p>Age.xlsx - the ages of the participants</p> <p> </p>
Barcoding of episodic memories in the hippocampus of a food-caching bird
<p>The hippocampus is critical for episodic memory. Although hippocampal activity represents place and other behaviorally relevant variables, it is unclear how it encodes numerous memories of specific events in life. To study episodic coding, we leveraged the specialized behavior of chickadees – food-caching birds that form memories at well-defined moments in time whenever they cache food for subsequent retrieval. Our recordings during caching revealed very sparse, transient barcode-like patterns of firing across hippocampal neurons. Each "barcode" uniquely represented a caching event and transiently reactivated during the retrieval of that specific cache. Barcodes co-occurred with the conventional activity of place cells, but were uncorrelated even for nearby cache locations that had similar place codes. We propose that animals recall episodic memories by reactivating hippocampal barcodes. Similarly to computer hash codes, these patterns assign unique identifiers to different events and could be a mechanism for rapid formation and storage of many non-interfering memories.</p>
Barcoding of episodic memories in the hippocampus of a food-caching bird
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Behavioral evidence for memory replay of video episodes in macaque monkeys
<p>Humans recall the past by replaying fragments of events temporally. Here, we demonstrate a similar effect in macaques. We trained six rhesus monkeys with a temporal-order judgement (TOJ) task and collected 5000 TOJ trials. In each trial, they watched a naturalistic video of about 10 s comprising two across-context clips, and after a 2-s delay, performed TOJ between two frames from the video. The monkeys apply a non-linear forward, time-compressed replay mechanism during the temporal-order judgement. In contrast with humans, such compression of replay is however not sophisticated enough to allow them to skip over irrelevant information by compressing the encoded video globally. We also reveal that the monkeys detect event contextual boundaries and such detection facilitates recall by an increased rate of information accumulation. Demonstration of a time-compressed, forward replay like pattern in the macaque monkeys provides insights into the evolution of episodic memory in our lineage</p>
Impairment of aversive episodic memories during Covid-19 pandemic: The impact of emotional context on memory processes
<p>The threatening context of the COVID-19 pandemic provided a unique setting to study the effects of negative psychological symptoms on memory processes. Episodic memory is an essential function of the human being related to the ability to store and remember experiences and anticipate possible events in the future. Studying this function in this context is crucial to understand what effects the pandemic will have on the formation of episodic memories. To study this, the formation of episodic memories was evaluated by free recall, recognition, and episode order tasks for an aversive and neutral content. The results indicated that aversive episodic memory is impaired both in the free recall task and in the recognition task. Even the beneficial effect that emotional memory usually has for the episodic order was undermined as there were no differences between the neutral and aversive condition. The present work adds to the evidence that indicates that the level of activation does not modify memory processes in a linear way, which also depends on the type of recall and the characteristics of the content to be encoded.</p>
Larger capacity for unconscious versus conscious episodic memory
<p>Episodic memory is the memory for experienced events. A peak competence of episodic memory is the mental combination of events to infer commonalities. Inferring commonalities may proceed with and without consciousness of events. Yet, what distinguishes conscious from unconscious inference? This question inspired nine experiments that featured strongly and weakly masked cartoon clips presented for unconscious and conscious inference. Each clip featured a scene with a visually impenetrable hiding place. Five animals crossed the scene one-by-one consecutively. One animal trajectory represented one event. The animals moved through the hiding place, where they might linger or not. Participants' task was to observe the animals' entrances and exits to maintain a mental record of which animals hid simultaneously. We manipulated information load to explore capacity limits. Memory of inferences was tested immediately, 3.5 or 6 minutes following encoding. Participants retrieved inferences well when encoding was conscious. When encoding was unconscious, participants needed to respond intuitively. Only habitually intuitive decision-makers exhibited a significant delayed retrieval of inferences drawn unconsciously. Their unconscious retrieval performance did not drop significantly with increasing information load, while conscious retrieval performance dropped significantly. A working memory network, including hippocampus, was activated during both conscious and unconscious inference and correlated with retrieval success. An episodic retrieval network, including hippocampus, was activated during both conscious and unconscious retrieval of inferences and correlated with retrieval success. Only conscious encoding/retrieval recruited additional brain regions outside these networks. Hence, levels of consciousness influenced the memories' behavioral impact, memory capacity, and the neural representational code.</p>
Task-dependent Effects of TMS on the Neural Biomarkers of Episodic Memory
ClinicalTrials.gov study NCT04694131. IPD Sharing: UNDECIDED. Countries: 1. Publications: 3.
Data from: Behavioral evidence for memory replay of video episodes in the macaque
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Larger capacity for unconscious versus conscious episodic memory
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Sequential memory improves sample and memory efficiency in Episodic Control - Dataset
<p>Dataset for the research paper titled "Sequential memory improves sample and memory efficiency in Episodic Control"</p>
Transcranial Alternating Current Stimulation for the Improvement of Episodic Memory in Healthy Older Adults
ClinicalTrials.gov study NCT06284720. IPD Sharing: YES. Countries: 1. Publications: 29.
Efficacy, Transfer, and Neuro-functional Basis of a Memory Training Targeting Episodic Retrieval in Older Adults.
ClinicalTrials.gov study NCT06110234. IPD Sharing: YES. Countries: 1. Publications: 0.
Modulation of Episodic Memory Using Theta Burst Stimulation (TBS)
ClinicalTrials.gov study NCT03406195. IPD Sharing: UNDECIDED. Countries: 1. Publications: 19.
rTMS as a Probe of Episodic Memory Neurocircuitry in Schizophrenia
ClinicalTrials.gov study NCT04182113. IPD Sharing: NO. Countries: 1. Publications: 0.
Early remodeling of the neocortex upon episodic memory encoding
GEO Series GSE58510. Mus musculus. 8 samples. Type: Expression profiling by high throughput sequencing.
Effects of THC and CBD on Human Episodic Memory Function
ClinicalTrials.gov study NCT02291562. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Effect of Affective Content on Drug Induced Amnesia of Episodic Memory
ClinicalTrials.gov study NCT00142493. IPD Sharing: Not stated. Countries: 1. Publications: 0.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.