Tonotopic organization and parcellation of auditory cortex in the FM-bat Carollia perspicillata.
Saved in:
| Title: | Tonotopic organization and parcellation of auditory cortex in the FM-bat Carollia perspicillata. |
|---|---|
| Authors: | Esser, Karl‐Heinz (AUTHOR), Eiermann, Arne (AUTHOR) |
| Source: | European Journal of Neuroscience. Oct99, Vol. 11 Issue 10, p3669-3682. 14p. 6 Maps. |
| Subjects: | Auditory cortex, Carollia perspicillata, Neurons |
| Abstract: | Abstract In the short-tailed fruit bat (Carollia perspicillata), the auditory cortex was localized autoradiographically and studied electrophysiologically in detail by using metal microelectrodes and 10-ms tone stimuli. Because, in the weakly-anaesthetized preparation, neuronal responses to pure-tones were even found throughout the non-primary auditory cortex, characteristic frequencies and minimum thresholds of neuron clusters (multiunits) could be mapped consistently and used to define auditory cortical fields conventionally (i.e. as in studies of auditory cortex of non-echolocating mammals). Thus, within the electrophysiologically demarcated auditory cortex, six auditory fields were defined by criteria, as for example a gradient of characteristic frequencies (primary auditory cortex, AI; anterior auditory field, AAF; secondary auditory cortex, AII), reversal of the gradient across the field border (AI, AAF), uniform representation of a restricted band of frequencies (i.e. > 60 kHz; high-frequency fields I and II, HFI and HFII), and transition from low to high minimum thresholds or vice versa [dorsoposterior field (DP), AII, HFI, HFII]. As supportive evidence for the distinction of these auditory cortical fields, differences in neuronal response properties were also used. In comparison with other mammals (e.g. cat and mouse), both the relative position of the auditory fields (mainly AI, AAF, DP and AII) and the representational principles for sound parameters within these forebrain areas seem to reflect a ‘fundamental plan’ (discussion below) of mammalian auditory cortical organization. Two coherent dorsally displaced high-frequency representations (HFI, HFII) covering ∼ 40% of the total auditory cortical surface seem particularly suited for the processing of the dominant biosonar second and third harmonic of this species, and hence can be regarded as an adaptation for echolocation. [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 |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 5979897 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Tonotopic organization and parcellation of auditory cortex in the FM-bat Carollia perspicillata. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Esser%2C+Karl‐Heinz%22">Esser, Karl‐Heinz</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eiermann%2C+Arne%22">Eiermann, Arne</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22European+Journal+of+Neuroscience%22">European Journal of Neuroscience</searchLink>. Oct99, Vol. 11 Issue 10, p3669-3682. 14p. 6 Maps. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Auditory+cortex%22">Auditory cortex</searchLink><br /><searchLink fieldCode="DE" term="%22Carollia+perspicillata%22">Carollia perspicillata</searchLink><br /><searchLink fieldCode="DE" term="%22Neurons%22">Neurons</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract In the short-tailed fruit bat (Carollia perspicillata), the auditory cortex was localized autoradiographically and studied electrophysiologically in detail by using metal microelectrodes and 10-ms tone stimuli. Because, in the weakly-anaesthetized preparation, neuronal responses to pure-tones were even found throughout the non-primary auditory cortex, characteristic frequencies and minimum thresholds of neuron clusters (multiunits) could be mapped consistently and used to define auditory cortical fields conventionally (i.e. as in studies of auditory cortex of non-echolocating mammals). Thus, within the electrophysiologically demarcated auditory cortex, six auditory fields were defined by criteria, as for example a gradient of characteristic frequencies (primary auditory cortex, AI; anterior auditory field, AAF; secondary auditory cortex, AII), reversal of the gradient across the field border (AI, AAF), uniform representation of a restricted band of frequencies (i.e. > 60 kHz; high-frequency fields I and II, HFI and HFII), and transition from low to high minimum thresholds or vice versa [dorsoposterior field (DP), AII, HFI, HFII]. As supportive evidence for the distinction of these auditory cortical fields, differences in neuronal response properties were also used. In comparison with other mammals (e.g. cat and mouse), both the relative position of the auditory fields (mainly AI, AAF, DP and AII) and the representational principles for sound parameters within these forebrain areas seem to reflect a ‘fundamental plan’ (discussion below) of mammalian auditory cortical organization. Two coherent dorsally displaced high-frequency representations (HFI, HFII) covering ∼ 40% of the total auditory cortical surface seem particularly suited for the processing of the dominant biosonar second and third harmonic of this species, and hence can be regarded as an adaptation for echolocation. [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=5979897 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1046/j.1460-9568.1999.00789.x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 3669 Subjects: – SubjectFull: Auditory cortex Type: general – SubjectFull: Carollia perspicillata Type: general – SubjectFull: Neurons Type: general Titles: – TitleFull: Tonotopic organization and parcellation of auditory cortex in the FM-bat Carollia perspicillata. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Esser, Karl‐Heinz – PersonEntity: Name: NameFull: Eiermann, Arne IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct99 Type: published Y: 1999 Identifiers: – Type: issn-print Value: 0953816X Numbering: – Type: volume Value: 11 – Type: issue Value: 10 Titles: – TitleFull: European Journal of Neuroscience Type: main |
| ResultId | 1 |
