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Molecular maps of neural activity and quiescence

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Chaudhuri A., Zangenehpour S., Rahbar-Dehgan F., Ye F.
Acta Neurobiologiae Experimentalis
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2000
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vol. 60
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issue 3
403-410
EN
The rapid accumulation of inducible transcription factors (ITFs), such as c-Fos and Zif268, in activated neurons combined with histological methods that offer detection at the cellular level are key features that have led to their wide use in visualizing activated neurons. There are two major drawbacks of ITFs that limit their use in the CNS - cell-type expression specificity and stimulus-transcription coupling uncertainty. Recent technical advances in the field of molecular activity mapping now permit dual-labeling approaches that help resolve some of these ambiguities and identify neurons that are activated by different sensory stimuli. Furthermore, the recent identification of the robl/LC7-like gene, which shows immediate-early repression after stimulation, may have utility in functional mapping where it can be used to delineate quiescent neurons and serve as a complement to molecular activity markers.
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Are there different mechanisms of synchronization in the course of spike-wave discharges (SWDs) burst development in WAG/Rij rats?

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Godlevsky L. S., Vostrov G. N., Kobolev E. V., van_ L. E. L. J. M., Coenen A. M. L., Iorhachova M. L., Pereverzev V. A., Smirnov I. V.
Acta Neurobiologiae Experimentalis
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2006
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vol. 66
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issue 3
189-194
EN
In WAG/Rij rats the pair linear correlation ?r' was calculated for bipolar recordings in fronto-temporal, fronto-occipital and occipito-temporal zones of both hemispheres as well as in paleocerebellar cortex (culmen). It was shown that development of SWD bursts resulted in interhemispheric decreases of correlation between the right occipito-temporal cortical region on one side, and left fronto-temporal on the contralateral side. Towards the end of SWD, we found an increased interhemispheric correlation between left fronto-temporal and right fronto-occipital cortical zones, as well as, between both fronto-temporal zones. Paleocerebellum correlates at a weak to moderate level during different periods of SWD burst generation.
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