期刊
TRENDS IN NEUROSCIENCES
卷 29, 期 7, 页码 419-427出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tins.2006.06.001
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Adult brain networks generate a wide range of oscillations. Some of these are behaviourally relevant, whereas others occur during seizures and other pathological conditions. This raises the question of how physiological oscillations differ from pathogenic ones. In this review, this issue is discussed from a developmental standpoint. Indeed, both epileptic and physiological high-frequency oscillations (HFOs) appear progressively during maturation, and it is therefore possible to determine how this program corresponds to maturation of the neuronal populations that generate these oscillations. We review here important differences in the development of neuronal populations that might contribute to their different oscillatory properties. In particular, at an early stage, the density of glutamatergic synapses is too low for physiological HFOs but an additional drive can be provided by excitatory GABA, triggering epileptic HFOs and the cascades involved in long-lasting epileptogenic transformations. This review is part of the INMED/TINS special issue Nature and nurture in brain development and neurological disorders, based on presentations at the annual INMED/TINS symposium (http://inmednet.com/).
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