Manipulating Memory Traces in the Hippocampus
Document Type
Video
Publication Date
4-8-2021
Keywords
Memory, hippocampus, engram cells, neurons
Collection
Integrative Systems Neuroscience Seminar Series
Abstract
The hippocampus is thought to encode spatial and contextual memories in distinct groups of neurons called engram cells. Wiltgen's lab was one of the first to confirm this experimentally by identifying active cells during learning and silencing them during memory retrieval. This was accomplished by combining transgenic reporter mice with optogenetic tools to selectively express light-sensitive proteins in active neurons during context fear conditioning. When these neurons were silenced, they found that memory retrieval was severely impaired. Inactivation of hippocampal neurons also prevented the reactivation of neocortical ensembles that were engaged during learning.
Citation
Wiltgen, B. (2021). Manipulating Memory Traces in the Hippocampus. Publications and Presentations. Retrieved from https://scholarworks.uark.edu/neuropub/6
Comments
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