Immediate Early Genes (IEGs) such as, c-fos, Egr1 and arc are selectively and promptly upregulated in learning and memory among neuronal subpopulations in regions associated with these processes.
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Egr1
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Although many studies support changes in immediate early gene expression during learning and memory, few studies directly analyze the implication of these genes in mental illnesses.
Immediate early genes including c-Fos, Egr1, and Arc are selectively and rapidly upregulated during learning and memory in neuronal subpopulations associated with these processes.
Changes in expression of c-Fos, Egr1, and Arc have been observed in recognition, working, and fear-related memories across the brain.