PMID- 29192865 OWN - NLM STAT- MEDLINE DCOM- 20180716 LR - 20190104 IS - 1933-0715 (Electronic) IS - 1933-0707 (Linking) VI - 21 IP - 2 DP - 2018 Feb TI - Electrocorticography and the early maturation of high-frequency suppression within the default mode network. PG - 133-140 LID - 2017.7.PEDS17269 [pii] LID - 10.3171/2017.7.PEDS17269 [doi] AB - OBJECTIVE The acquisition and refinement of cognitive and behavioral skills during development is associated with the maturation of various brain oscillatory activities. Most developmental investigations have identified distinct patterns of low-frequency electrophysiological activity that are characteristic of various behavioral milestones. In this investigation, the authors focused on the cross-sectional developmental properties of high-frequency spectral power from the brain's default mode network (DMN) during goal-directed behavior. METHODS The authors contrasted regionally specific, time-evolving high gamma power (HGP) in the lateral DMN cortex between 3 young children (age range 3-6 years) and 3 adults by use of electrocorticography (ECoG) recordings over the left perisylvian cortex during a picture-naming task. RESULTS Across all participants, a nearly identical and consistent response suppression of HGP, which is a functional signature of the DMN, was observed during task performance recordings acquired from ECoG electrodes placed over the lateral DMN cortex. This finding provides evidence of relatively early maturation of the DMN. Furthermore, only HGP relative to evoked alpha and beta band power showed this level of consistency across all participants. CONCLUSIONS Regionally specific, task-evoked suppression of the high-frequency components of the cortical power spectrum is established early in brain development, and this response may reflect the early maturation of specific cognitive and/or computational mechanisms. FAU - Weaver, Kurt E AU - Weaver KE AD - Departments of1Radiology. AD - 8Integrated Brain Imaging Center, University of Washington, Seattle. AD - 9Graduate Program in Neuroscience, University of Washington, Seattle. AD - 11Center for Sensorimotor Neural Engineering, University of Washington, Seattle, Washington. FAU - Poliakov, Andrew AU - Poliakov A AD - Departments of5Radiology. FAU - Novotny, Edward J AU - Novotny EJ AD - 6Neurology, and. AD - 8Integrated Brain Imaging Center, University of Washington, Seattle. AD - 10Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle; and. FAU - Olson, Jared D AU - Olson JD AD - 4Rehabilitation Medicine, University of Washington, Seattle. AD - 11Center for Sensorimotor Neural Engineering, University of Washington, Seattle, Washington. FAU - Grabowski, Thomas J AU - Grabowski TJ AD - Departments of1Radiology. AD - 3Neurology, and. AD - 8Integrated Brain Imaging Center, University of Washington, Seattle. AD - 9Graduate Program in Neuroscience, University of Washington, Seattle. AD - 11Center for Sensorimotor Neural Engineering, University of Washington, Seattle, Washington. FAU - Ojemann, Jeffrey G AU - Ojemann JG AD - 2Neurological Surgery. AD - 7Neurosurgery, Seattle Children's Hospital, Seattle. AD - 11Center for Sensorimotor Neural Engineering, University of Washington, Seattle, Washington. LA - eng GR - K01 MH086118/MH/NIMH NIH HHS/United States GR - R01 NS065186/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20171201 PL - United States TA - J Neurosurg Pediatr JT - Journal of neurosurgery. Pediatrics JID - 101463759 SB - IM MH - Adult MH - Brain/*physiology MH - Brain Mapping/methods MH - Cerebral Cortex/physiology MH - Child MH - Child, Preschool MH - Cognition/physiology MH - Electrocorticography MH - Electrodes MH - Female MH - Goals MH - Human Development/physiology MH - Humans MH - Magnetic Resonance Imaging MH - Male MH - Pattern Recognition, Visual/physiology MH - Psychological Tests MH - Young Adult OTO - NOTNLM OT - DMN = default mode network OT - ECoG = electrocorticography OT - ERTS = event-related time series OT - FC = functional connectivity OT - FSL = FMRIB Software Library OT - HG = high gamma OT - HGP = HG power OT - HMC = Harborview Medical Center OT - ITI = intertrial interval OT - MNI = Montreal Neurological Institute OT - SCH = Seattle Children's Hospital OT - brain development OT - default mode network OT - electrocorticography OT - fMRI = functional MRI OT - high gamma power OT - rsfMRI = resting-state fMRI OT - suppression EDAT- 2017/12/02 06:00 MHDA- 2018/07/17 06:00 CRDT- 2017/12/02 06:00 PHST- 2017/12/02 06:00 [pubmed] PHST- 2018/07/17 06:00 [medline] PHST- 2017/12/02 06:00 [entrez] AID - 2017.7.PEDS17269 [pii] AID - 10.3171/2017.7.PEDS17269 [doi] PST - ppublish SO - J Neurosurg Pediatr. 2018 Feb;21(2):133-140. doi: 10.3171/2017.7.PEDS17269. Epub 2017 Dec 1.