Abstract:
:Throughout life, thalamocortical (TC) network alternates between activated states (wake or rapid eye movement sleep) and slow oscillatory state dominating slow-wave sleep. The patterns of neuronal firing are different during these distinct states. I propose that due to relatively regular firing, the activated states preset some steady state synaptic plasticity and that the silent periods of slow-wave sleep contribute to a release from this steady state synaptic plasticity. In this respect, I discuss how states of vigilance affect short-, mid-, and long-term synaptic plasticity, intrinsic neuronal plasticity, as well as homeostatic plasticity. Finally, I suggest that slow oscillation is intrinsic property of cortical network and brain homeostatic mechanisms are tuned to use all forms of plasticity to bring cortical network to the state of slow oscillation. However, prolonged and profound shift from this homeostatic balance could lead to development of paroxysmal hyperexcitability and seizures as in the case of brain trauma.
journal_name
Prog Brain Resjournal_title
Progress in brain researchauthors
Timofeev Idoi
10.1016/B978-0-444-53839-0.00009-0subject
Has Abstractpub_date
2011-01-01 00:00:00pages
121-44eissn
0079-6123issn
1875-7855pii
B978-0-444-53839-0.00009-0journal_volume
193pub_type
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