Spatiotemporal distribution of a late synchronized activity in olfactory pathways following stimulation of the olfactory bulb in rats.
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| Title: | Spatiotemporal distribution of a late synchronized activity in olfactory pathways following stimulation of the olfactory bulb in rats. |
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| Authors: | Mouly, Anne‐Marie (AUTHOR), Litaudon, Philippe (AUTHOR), Chabaud, Pascal (AUTHOR), Ravel, Nadine (AUTHOR), Gervais, Rémi (AUTHOR) |
| Source: | European Journal of Neuroscience. Mar1998, Vol. 10 Issue 3-1135. |
| Subjects: | Olfactory nerve, Brain stimulation |
| Abstract: | The evoked potential recorded in the rat piriform cortex in response to electrical stimulation of the olfactory bulb is composed of an early component occasionally followed by a late component (60–70 ms). We previously showed that the late component occurrence was enhanced following an olfactory learning. In the present study carried out in naive rats, we investigated the precise conditions of induction of this late component, and its spatiotemporal distribution along the olfactory pathways. In the anaesthetized rat, a stimulating electrode was implanted in the olfactory bulb. Four recording electrodes were positioned, respectively, in the olfactory bulb, the anterior and posterior parts of the piriform cortex, and the entorhinal cortex. Simultaneous recording of signals evoked in the four sampled structures in response to stimulation of the olfactory bulb revealed that the late component was detected in anterior and posterior piriform cortex as well as in entorhinal cortex, but not in the olfactory bulb. The late component occurred reliably for a narrow range of low intensities of stimulation delivered at frequencies not exceeding 1 Hz. Comparison of late component amplitude and latency across the different recorded sites showed that this component appeared first and with the greatest amplitude in the posterior piriform cortex. In addition to showing a functional dissociation between anterior and posterior parts of the piriform cortex, these data suggest that the posterior piriform cortex could be the locus of generation of this late high amplitude synchronized activity, which would then propagate to the neighbouring regions. [ABSTRACT FROM AUTHOR] |
| Copyright of European Journal of Neuroscience is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 5278875 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Spatiotemporal distribution of a late synchronized activity in olfactory pathways following stimulation of the olfactory bulb in rats. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mouly%2C+Anne‐Marie%22">Mouly, Anne‐Marie</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Litaudon%2C+Philippe%22">Litaudon, Philippe</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chabaud%2C+Pascal%22">Chabaud, Pascal</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ravel%2C+Nadine%22">Ravel, Nadine</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gervais%2C+Rémi%22">Gervais, Rémi</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22European+Journal+of+Neuroscience%22">European Journal of Neuroscience</searchLink>. Mar1998, Vol. 10 Issue 3-1135. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Olfactory+nerve%22">Olfactory nerve</searchLink><br /><searchLink fieldCode="DE" term="%22Brain+stimulation%22">Brain stimulation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The evoked potential recorded in the rat piriform cortex in response to electrical stimulation of the olfactory bulb is composed of an early component occasionally followed by a late component (60–70 ms). We previously showed that the late component occurrence was enhanced following an olfactory learning. In the present study carried out in naive rats, we investigated the precise conditions of induction of this late component, and its spatiotemporal distribution along the olfactory pathways. In the anaesthetized rat, a stimulating electrode was implanted in the olfactory bulb. Four recording electrodes were positioned, respectively, in the olfactory bulb, the anterior and posterior parts of the piriform cortex, and the entorhinal cortex. Simultaneous recording of signals evoked in the four sampled structures in response to stimulation of the olfactory bulb revealed that the late component was detected in anterior and posterior piriform cortex as well as in entorhinal cortex, but not in the olfactory bulb. The late component occurred reliably for a narrow range of low intensities of stimulation delivered at frequencies not exceeding 1 Hz. Comparison of late component amplitude and latency across the different recorded sites showed that this component appeared first and with the greatest amplitude in the posterior piriform cortex. In addition to showing a functional dissociation between anterior and posterior parts of the piriform cortex, these data suggest that the posterior piriform cortex could be the locus of generation of this late high amplitude synchronized activity, which would then propagate to the neighbouring regions. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of European Journal of Neuroscience is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=5278875 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1046/j.1460-9568.1998.00126.x Languages: – Code: eng Text: English Subjects: – SubjectFull: Olfactory nerve Type: general – SubjectFull: Brain stimulation Type: general Titles: – TitleFull: Spatiotemporal distribution of a late synchronized activity in olfactory pathways following stimulation of the olfactory bulb in rats. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mouly, Anne‐Marie – PersonEntity: Name: NameFull: Litaudon, Philippe – PersonEntity: Name: NameFull: Chabaud, Pascal – PersonEntity: Name: NameFull: Ravel, Nadine – PersonEntity: Name: NameFull: Gervais, Rémi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar1998 Type: published Y: 1998 Identifiers: – Type: issn-print Value: 0953816X Numbering: – Type: volume Value: 10 – Type: issue Value: 3 Titles: – TitleFull: European Journal of Neuroscience Type: main |
| ResultId | 1 |
