Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat.
A prominent feature of olfactory bulb (OB) dynamics is the expression of characteristic local field potential (LFP) rhythms, including a slow respiration-related rhythm and two fast alternating oscillatory rhythms, beta (15-30 Hz) and gamma (40-90 Hz). All of these rhythms are implicated in olfactor...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-07-01
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| Series: | Frontiers in Neural Circuits |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fncir.2014.00088/full |
| _version_ | 1818507363184803840 |
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| author | Nicolas eFourcaud-Trocmé Nicolas eFourcaud-Trocmé Emmanuelle eCourtiol Emmanuelle eCourtiol Nathalie eBuonviso Nathalie eBuonviso |
| author_facet | Nicolas eFourcaud-Trocmé Nicolas eFourcaud-Trocmé Emmanuelle eCourtiol Emmanuelle eCourtiol Nathalie eBuonviso Nathalie eBuonviso |
| author_sort | Nicolas eFourcaud-Trocmé |
| collection | DOAJ |
| description | A prominent feature of olfactory bulb (OB) dynamics is the expression of characteristic local field potential (LFP) rhythms, including a slow respiration-related rhythm and two fast alternating oscillatory rhythms, beta (15-30 Hz) and gamma (40-90 Hz). All of these rhythms are implicated in olfactory coding. Fast oscillatory rhythms are known to involve the mitral-granule cell loops. Although the underlying mechanisms of gamma oscillation have been studied, the origin of beta oscillation remains poorly understood. Whether these two different rhythms share the same underlying mechanism is unknown. This study uses a quantitative and detailed current-source density analysis combined with multi-unit activity recordings to shed light on this question in freely breathing anesthetized rats. In particular, we show that gamma oscillation generation involves mainly upper half of the external plexiform layer (EPL) and superficial areas of granule cell layer. In contrast, the generation of beta oscillation involves the lower part of the EPL and deep granule cells. This differential involvement of sublaminar networks is neither dependent on odor quality nor on the precise frequency of the fast oscillation under study. Overall, this study demonstrates a functional sublaminar organization of the rat OB, which is supported by previous anatomical findings. |
| first_indexed | 2024-12-10T22:17:25Z |
| format | Article |
| id | doaj.art-5d980b2ae54f4c94a9e99aadccc3e90e |
| institution | Directory Open Access Journal |
| issn | 1662-5110 |
| language | English |
| last_indexed | 2024-12-10T22:17:25Z |
| publishDate | 2014-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neural Circuits |
| spelling | doaj.art-5d980b2ae54f4c94a9e99aadccc3e90e2022-12-22T01:31:25ZengFrontiers Media S.A.Frontiers in Neural Circuits1662-51102014-07-01810.3389/fncir.2014.00088102098Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat.Nicolas eFourcaud-Trocmé0Nicolas eFourcaud-Trocmé1Emmanuelle eCourtiol2Emmanuelle eCourtiol3Nathalie eBuonviso4Nathalie eBuonviso5CNRS UMR5292 - INSERM U1028Université Claude Bernard Lyon 1CNRS UMR5292 - INSERM U1028Université Claude Bernard Lyon 1CNRS UMR5292 - INSERM U1028Université Claude Bernard Lyon 1A prominent feature of olfactory bulb (OB) dynamics is the expression of characteristic local field potential (LFP) rhythms, including a slow respiration-related rhythm and two fast alternating oscillatory rhythms, beta (15-30 Hz) and gamma (40-90 Hz). All of these rhythms are implicated in olfactory coding. Fast oscillatory rhythms are known to involve the mitral-granule cell loops. Although the underlying mechanisms of gamma oscillation have been studied, the origin of beta oscillation remains poorly understood. Whether these two different rhythms share the same underlying mechanism is unknown. This study uses a quantitative and detailed current-source density analysis combined with multi-unit activity recordings to shed light on this question in freely breathing anesthetized rats. In particular, we show that gamma oscillation generation involves mainly upper half of the external plexiform layer (EPL) and superficial areas of granule cell layer. In contrast, the generation of beta oscillation involves the lower part of the EPL and deep granule cells. This differential involvement of sublaminar networks is neither dependent on odor quality nor on the precise frequency of the fast oscillation under study. Overall, this study demonstrates a functional sublaminar organization of the rat OB, which is supported by previous anatomical findings.http://journal.frontiersin.org/Journal/10.3389/fncir.2014.00088/fullOlfactory Bulbratbetagammaoscillationcurrent-source density |
| spellingShingle | Nicolas eFourcaud-Trocmé Nicolas eFourcaud-Trocmé Emmanuelle eCourtiol Emmanuelle eCourtiol Nathalie eBuonviso Nathalie eBuonviso Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat. Frontiers in Neural Circuits Olfactory Bulb rat beta gamma oscillation current-source density |
| title | Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat. |
| title_full | Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat. |
| title_fullStr | Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat. |
| title_full_unstemmed | Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat. |
| title_short | Two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation: a CSD study in the anesthetized rat. |
| title_sort | two distinct olfactory bulb sublaminar networks involved in gamma and beta oscillation generation a csd study in the anesthetized rat |
| topic | Olfactory Bulb rat beta gamma oscillation current-source density |
| url | http://journal.frontiersin.org/Journal/10.3389/fncir.2014.00088/full |
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