Journal
NEUROSCIENTIST
Volume 21, Issue 5, Pages 460-474Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1073858415592377
Keywords
CNS disorders; neuroimaging; emergent property; CNS pharmacology; neuronal network; electrical stimulation; complexity; seizures; startle; pain
Categories
Funding
- NINDS [NS13849, 21281, NS052519, NS066974, NS083783]
- Epilepsy Foundation
- CURE
- NIAAA [AA08591]
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Improved therapy of brain disorders can be achieved by focusing on neuronal networks, utilizing combined pharmacological and stimulation paradigms guided by neuroimaging. Neuronal networks that mediate normal brain functions, such as hearing, interact with other networks, which is important but commonly neglected. Network interaction changes often underlie brain disorders, including epilepsy. Conditional multireceptive (CMR) brain areas (e.g., brainstem reticular formation and amygdala) are critical in mediating neuroplastic changes that facilitate network interactions. CMR neurons receive multiple inputs but exhibit extensive response variability due to milieu and behavioral state changes and are exquisitely sensitive to agents that increase or inhibit GABA-mediated inhibition. Enhanced CMR neuronal responsiveness leads to expression of emergent properties-nonlinear events-resulting from network self-organization. Determining brain disorder mechanisms requires animals that model behaviors and neuroanatomical substrates of human disorders identified by neuroimaging. However, not all sites activated during network operation are requisite for that operation. Other active sites are ancillary, because their blockade does not alter network function. Requisite network sites exhibit emergent properties that are critical targets for pharmacological and stimulation therapies. Improved treatment of brain disorders should involve combined pharmacological and stimulation therapies, guided by neuroimaging, to correct network malfunctions by targeting specific network neurons.
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