A Beta2-Frequency (20-30 Hz) Oscillation in Nonsynaptic Networks of Somatosensory Cortex
Beta2 frequency (20-30 Hz) oscillations appear over somatosensory and motor cortices in vivo during motor preparation and can be coherent with muscle electrical activity. We describe a beta2 frequency oscillation occurring in vitro in networks of layer V pyramidal cells, the cells of origin of the c...
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| Veröffentlicht in: | Proceedings of the National Academy of Sciences - PNAS 2006-10, Vol.103 (42), p.15646-15650 |
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| container_title | Proceedings of the National Academy of Sciences - PNAS |
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| creator | Roopun, Anita K. Middleton, Steven J. Cunningham, Mark O. LeBeau, Fiona E. N. Bibbig, Andrea Whittington, Miles A. Traub, Roger D. |
| description | Beta2 frequency (20-30 Hz) oscillations appear over somatosensory and motor cortices in vivo during motor preparation and can be coherent with muscle electrical activity. We describe a beta2 frequency oscillation occurring in vitro in networks of layer V pyramidal cells, the cells of origin of the corticospinal tract. This beta2 oscillation depends on gap junctional coupling, but it survives a cut through layer 4 and, hence, does not depend on apical dendritic electrogenesis. It also survives a blockade of a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors or a blockade of$GABA_{A}$receptors that is sufficient to suppress gamma (30-70 Hz) oscillations in superficial cortical layers. The oscillation period is determined by the M type of K⁺ current. |
| doi_str_mv | 10.1073/pnas.0607443103 |
| format | Article |
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N.</creatorcontrib><creatorcontrib>Bibbig, Andrea</creatorcontrib><creatorcontrib>Whittington, Miles A.</creatorcontrib><creatorcontrib>Traub, Roger D.</creatorcontrib><title>A Beta2-Frequency (20-30 Hz) Oscillation in Nonsynaptic Networks of Somatosensory Cortex</title><title>Proceedings of the National Academy of Sciences - PNAS</title><addtitle>Proc Natl Acad Sci U S A</addtitle><description>Beta2 frequency (20-30 Hz) oscillations appear over somatosensory and motor cortices in vivo during motor preparation and can be coherent with muscle electrical activity. We describe a beta2 frequency oscillation occurring in vitro in networks of layer V pyramidal cells, the cells of origin of the corticospinal tract. This beta2 oscillation depends on gap junctional coupling, but it survives a cut through layer 4 and, hence, does not depend on apical dendritic electrogenesis. It also survives a blockade of a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors or a blockade of$GABA_{A}$receptors that is sufficient to suppress gamma (30-70 Hz) oscillations in superficial cortical layers. 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N.</au><au>Bibbig, Andrea</au><au>Whittington, Miles A.</au><au>Traub, Roger D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Beta2-Frequency (20-30 Hz) Oscillation in Nonsynaptic Networks of Somatosensory Cortex</atitle><jtitle>Proceedings of the National Academy of Sciences - PNAS</jtitle><addtitle>Proc Natl Acad Sci U S A</addtitle><date>2006-10-17</date><risdate>2006</risdate><volume>103</volume><issue>42</issue><spage>15646</spage><epage>15650</epage><pages>15646-15650</pages><issn>0027-8424</issn><eissn>1091-6490</eissn><abstract>Beta2 frequency (20-30 Hz) oscillations appear over somatosensory and motor cortices in vivo during motor preparation and can be coherent with muscle electrical activity. We describe a beta2 frequency oscillation occurring in vitro in networks of layer V pyramidal cells, the cells of origin of the corticospinal tract. This beta2 oscillation depends on gap junctional coupling, but it survives a cut through layer 4 and, hence, does not depend on apical dendritic electrogenesis. It also survives a blockade of a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors or a blockade of$GABA_{A}$receptors that is sufficient to suppress gamma (30-70 Hz) oscillations in superficial cortical layers. The oscillation period is determined by the M type of K⁺ current.</abstract><cop>United States</cop><pub>National Academy of Sciences</pub><pmid>17030821</pmid><doi>10.1073/pnas.0607443103</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Proceedings of the National Academy of Sciences - PNAS, 2006-10, Vol.103 (42), p.15646-15650 |
| issn | 0027-8424 1091-6490 |
| language | eng |
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| source | MEDLINE; Jstor Complete Legacy; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry |
| subjects | Action Potentials - physiology alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid - metabolism Animals Axons Beta Rhythm Biological Sciences Cells Excitatory Amino Acid Agonists - metabolism Frequencies Gap junctions Gap Junctions - metabolism Interneurons Kainic Acid - metabolism Male Motor ability Nerve Net - physiology Neurons Neurons - cytology Neurons - metabolism Neuroscience Neurosciences Pyramidal cells Rats Rats, Wistar Receptors Receptors, GABA-A - metabolism Reed Sternberg cells Somatosensory cortex Somatosensory Cortex - anatomy & histology Somatosensory Cortex - physiology Spikelets |
| title | A Beta2-Frequency (20-30 Hz) Oscillation in Nonsynaptic Networks of Somatosensory Cortex |
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