Abstract：
:Changes in spine morphology may underlie memory formation, but the molecular mechanisms that subserve such alterations are poorly understood. Here we show that fear conditioning in rats leads to the movement of profilin, an actin polymerization-regulatory protein, into dendritic spines in the lateral amygdala and that these spines undergo enlargements in their postsynaptic densities (PSDs). A greater proportion of profilin-containing spines with enlarged PSDs could contribute to the enhancement of associatively induced synaptic responses in the lateral amygdala following fear learning.
journal_name
Nat Neuroscijournal_title
Nature neuroscienceauthors
Lamprecht R,Farb CR,Rodrigues SM,LeDoux JEdoi
10.1038/nn1672subject
Has Abstractpub_date
2006-04-01 00:00:00pages
481-3issue
4eissn
1097-6256issn
1546-1726pii
nn1672journal_volume
9pub_type
杂志文章abstract：:Orchestrating appropriate behavioral responses in the face of competing signals that predict either rewards or threats in the environment is crucial for survival. The basolateral nucleus of the amygdala (BLA) and prelimbic (PL) medial prefrontal cortex have been implicated in reward-seeking and fear-related responses,...
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abstract：:Temporal regulation of embryonic neurogenesis is controlled by hypostable transcription factors. The mechanism of the process is unclear. Here we show that the RNase III Drosha and DGCR8 (also known as Pasha), key components of the microRNA (miRNA) microprocessor, have important functions in mouse neurogenesis. Loss o...
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abstract：:We studied how the posterior parietal cortex combines new information with ongoing activity dynamics as mice accumulate evidence during a virtual navigation task. Using new methods to analyze population activity on single trials, we found that activity transitioned rapidly between different sets of active neurons. Eac...
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abstract：:Every year in the United States, an estimated 500,000 babies are born preterm (before 37 completed weeks of gestation), and this number is rising, along with the recognition of brain injuries due to preterm delivery. A common underlying pathogenesis appears to be perinatal hypoxia induced by immature lung development,...
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更新日期：2014-03-01 00:00:00
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pub_type： 已发布勘误
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