Immediate early gene activation in hippocampus and dorsal striatum: Effects of explicit place and response training
| Autor: | Ilene L. Bernstein, Kathryn M. Gill, Sheri J. Y. Mizumori |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Male
Transcriptional Activation Time Factors Cognitive Neuroscience education Central nervous system Spatial Behavior Hippocampus Experimental and Cognitive Psychology Striatum c-Fos Lesion Behavioral Neuroscience Basal ganglia medicine Animals Rats Long-Evans Maze Learning Genes Immediate-Early Problem Solving Early Growth Response Protein 1 Analysis of Variance biology T-maze Immunohistochemistry Rats Neostriatum medicine.anatomical_structure Gene Expression Regulation nervous system biology.protein medicine.symptom Psychology Proto-Oncogene Proteins c-fos Neuroscience Immediate early gene |
| Zdroj: | Neurobiology of Learning and Memory. 87:583-596 |
| ISSN: | 1074-7427 |
| DOI: | 10.1016/j.nlm.2006.12.011 |
| Popis: | Evidence from lesion, electrophysiological, and neuroimaging studies support the hypothesis that the hippocampus and dorsal striatum process afferent inputs in such a way that each structure regulates expression of different behaviors in learning and memory. The present study sought to determine whether rats explicitly trained to perform one of two different learning strategies, spatial or response, would display disparate immediate early gene activation in hippocampus and striatum. c-Fos and Zif268 immunoreactivity (IR) was measured in both hippocampus and striatum 30 or 90 min following criterial performance on a standard plus-maze task (place learners) or a modified T-maze task (response learners). Place and response learning differentially affected c-Fos-IR in striatum but not hippocampus. Specifically, explicit response learning induced greater c-Fos-IR activation in two subregions of the dorsal striatum. This increased c-Fos-IR was dependent upon the number of trials performed prior to reaching behavioral criterion and accuracy of performance during post-testing probe trials. Quantification of Zif268-IR in both hippocampus and striatum failed to distinguish between place and response learners. The changes in c-Fos-IR occurred 30 min, but not 90 min, post-testing. The synthesis of c-Fos early in testing could reflect the recruitment of key structures in learning. Consequently, animals that were able to learn the response task efficiently displayed greater amounts of c-Fos-IR in dorsal striatum. |
| Databáze: | OpenAIRE |
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