Three forebrain structures directly inform the auditory midbrain of echolocating bats
[Display omitted] •Medial prefrontal cortex (mPFC) projects to inferior colliculus (IC) in bats.•The IC-projecting neurons in the mPFC are located in layer 6.•No clear tonotopic organization was found in the mPFC-IC pathway.•IC receives direct inputs from 3 forebrain regions including mPFC. Echoloca...
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Veröffentlicht in: | Neuroscience letters 2019-11, Vol.712, p.134481-134481, Article 134481 |
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creator | Ito, Tetsufumi Yamamoto, Ryo Furuyama, Takafumi Hase, Kazuma Kobayasi, Kohta I Hiryu, Shizuko Honma, Satoru |
description | [Display omitted]
•Medial prefrontal cortex (mPFC) projects to inferior colliculus (IC) in bats.•The IC-projecting neurons in the mPFC are located in layer 6.•No clear tonotopic organization was found in the mPFC-IC pathway.•IC receives direct inputs from 3 forebrain regions including mPFC.
Echolocating bats emit various types of vocalizations for navigation and communication, and need to pay attention to vocal sounds. Projections from forebrain centers to auditory centers are involved in the attention to vocalizations, with the inferior colliculus (IC) being the main target of the projections. Here, using a retrograde tracer, we demonstrate that three forebrain structures, namely, the medial prefrontal cortex (mPFC), amygdala, and auditory cortex (AC), send direct descending projections to the central nucleus of IC. We found that all three structures projected to the bilateral IC. A comparison of the patterns of retrogradely labeled cells across animals suggests that the ipsilateral AC-IC projection is topographically organized, whereas mPFC-IC or amygdala-IC projections did not show clear topographic organization. Together with evidence from previous studies, these results suggest that three descending projections to the IC form loops between the forebrain and IC to make attention to various vocal sounds. |
doi_str_mv | 10.1016/j.neulet.2019.134481 |
format | Article |
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•Medial prefrontal cortex (mPFC) projects to inferior colliculus (IC) in bats.•The IC-projecting neurons in the mPFC are located in layer 6.•No clear tonotopic organization was found in the mPFC-IC pathway.•IC receives direct inputs from 3 forebrain regions including mPFC.
Echolocating bats emit various types of vocalizations for navigation and communication, and need to pay attention to vocal sounds. Projections from forebrain centers to auditory centers are involved in the attention to vocalizations, with the inferior colliculus (IC) being the main target of the projections. Here, using a retrograde tracer, we demonstrate that three forebrain structures, namely, the medial prefrontal cortex (mPFC), amygdala, and auditory cortex (AC), send direct descending projections to the central nucleus of IC. We found that all three structures projected to the bilateral IC. A comparison of the patterns of retrogradely labeled cells across animals suggests that the ipsilateral AC-IC projection is topographically organized, whereas mPFC-IC or amygdala-IC projections did not show clear topographic organization. Together with evidence from previous studies, these results suggest that three descending projections to the IC form loops between the forebrain and IC to make attention to various vocal sounds.</description><identifier>ISSN: 0304-3940</identifier><identifier>EISSN: 1872-7972</identifier><identifier>DOI: 10.1016/j.neulet.2019.134481</identifier><identifier>PMID: 31494222</identifier><language>eng</language><publisher>Ireland: Elsevier B.V</publisher><subject>Auditory cortex ; Basolateral amygdala ; Descending projection ; Inferior colliculus ; Medial prefrontal cortex</subject><ispartof>Neuroscience letters, 2019-11, Vol.712, p.134481-134481, Article 134481</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright © 2019 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c428t-1a1d42b05a54003202dead52a4dbbca0f94c3db4b499c18ca7b37d8ec7d7739f3</citedby><cites>FETCH-LOGICAL-c428t-1a1d42b05a54003202dead52a4dbbca0f94c3db4b499c18ca7b37d8ec7d7739f3</cites><orcidid>0000-0003-4516-9283</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.neulet.2019.134481$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31494222$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ito, Tetsufumi</creatorcontrib><creatorcontrib>Yamamoto, Ryo</creatorcontrib><creatorcontrib>Furuyama, Takafumi</creatorcontrib><creatorcontrib>Hase, Kazuma</creatorcontrib><creatorcontrib>Kobayasi, Kohta I</creatorcontrib><creatorcontrib>Hiryu, Shizuko</creatorcontrib><creatorcontrib>Honma, Satoru</creatorcontrib><title>Three forebrain structures directly inform the auditory midbrain of echolocating bats</title><title>Neuroscience letters</title><addtitle>Neurosci Lett</addtitle><description>[Display omitted]
•Medial prefrontal cortex (mPFC) projects to inferior colliculus (IC) in bats.•The IC-projecting neurons in the mPFC are located in layer 6.•No clear tonotopic organization was found in the mPFC-IC pathway.•IC receives direct inputs from 3 forebrain regions including mPFC.
Echolocating bats emit various types of vocalizations for navigation and communication, and need to pay attention to vocal sounds. Projections from forebrain centers to auditory centers are involved in the attention to vocalizations, with the inferior colliculus (IC) being the main target of the projections. Here, using a retrograde tracer, we demonstrate that three forebrain structures, namely, the medial prefrontal cortex (mPFC), amygdala, and auditory cortex (AC), send direct descending projections to the central nucleus of IC. We found that all three structures projected to the bilateral IC. A comparison of the patterns of retrogradely labeled cells across animals suggests that the ipsilateral AC-IC projection is topographically organized, whereas mPFC-IC or amygdala-IC projections did not show clear topographic organization. Together with evidence from previous studies, these results suggest that three descending projections to the IC form loops between the forebrain and IC to make attention to various vocal sounds.</description><subject>Auditory cortex</subject><subject>Basolateral amygdala</subject><subject>Descending projection</subject><subject>Inferior colliculus</subject><subject>Medial prefrontal cortex</subject><issn>0304-3940</issn><issn>1872-7972</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EglL4A4S8ZJPiV3CyQUIVLwmJTbu2_JhQV0lcbAepf09QCktWs5hz52oOQleULCihd7fbRQ9DC3nBCK0XlAtR0SM0o5VkhawlO0YzwokoeC3IGTpPaUsIKWkpTtEZp6IWjLEZWq82EQA3IYKJ2vc45TjYPERI2PkINrd77Ptx3-G8AawH53OIe9x5NwVCg8FuQhuszr7_wEbndIFOGt0muDzMOVo_Pa6WL8Xb-_Pr8uGtsIJVuaCaOsEMKXUpCOGMMAfalUwLZ4zVpKmF5c4II-ra0spqabh0FVjppOR1w-foZrq7i-FzgJRV55OFttU9hCEpxipZUn4n-YiKCbUxpBShUbvoOx33ihL1I1Rt1SRU_QhVk9Axdn1oGEwH7i_0a3AE7icAxj-_PESVrIfewmRPueD_b_gGHYWKcg</recordid><startdate>20191101</startdate><enddate>20191101</enddate><creator>Ito, Tetsufumi</creator><creator>Yamamoto, Ryo</creator><creator>Furuyama, Takafumi</creator><creator>Hase, Kazuma</creator><creator>Kobayasi, Kohta I</creator><creator>Hiryu, Shizuko</creator><creator>Honma, Satoru</creator><general>Elsevier B.V</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-4516-9283</orcidid></search><sort><creationdate>20191101</creationdate><title>Three forebrain structures directly inform the auditory midbrain of echolocating bats</title><author>Ito, Tetsufumi ; Yamamoto, Ryo ; Furuyama, Takafumi ; Hase, Kazuma ; Kobayasi, Kohta I ; Hiryu, Shizuko ; Honma, Satoru</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c428t-1a1d42b05a54003202dead52a4dbbca0f94c3db4b499c18ca7b37d8ec7d7739f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Auditory cortex</topic><topic>Basolateral amygdala</topic><topic>Descending projection</topic><topic>Inferior colliculus</topic><topic>Medial prefrontal cortex</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ito, Tetsufumi</creatorcontrib><creatorcontrib>Yamamoto, Ryo</creatorcontrib><creatorcontrib>Furuyama, Takafumi</creatorcontrib><creatorcontrib>Hase, Kazuma</creatorcontrib><creatorcontrib>Kobayasi, Kohta I</creatorcontrib><creatorcontrib>Hiryu, Shizuko</creatorcontrib><creatorcontrib>Honma, Satoru</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Neuroscience letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ito, Tetsufumi</au><au>Yamamoto, Ryo</au><au>Furuyama, Takafumi</au><au>Hase, Kazuma</au><au>Kobayasi, Kohta I</au><au>Hiryu, Shizuko</au><au>Honma, Satoru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Three forebrain structures directly inform the auditory midbrain of echolocating bats</atitle><jtitle>Neuroscience letters</jtitle><addtitle>Neurosci Lett</addtitle><date>2019-11-01</date><risdate>2019</risdate><volume>712</volume><spage>134481</spage><epage>134481</epage><pages>134481-134481</pages><artnum>134481</artnum><issn>0304-3940</issn><eissn>1872-7972</eissn><abstract>[Display omitted]
•Medial prefrontal cortex (mPFC) projects to inferior colliculus (IC) in bats.•The IC-projecting neurons in the mPFC are located in layer 6.•No clear tonotopic organization was found in the mPFC-IC pathway.•IC receives direct inputs from 3 forebrain regions including mPFC.
Echolocating bats emit various types of vocalizations for navigation and communication, and need to pay attention to vocal sounds. Projections from forebrain centers to auditory centers are involved in the attention to vocalizations, with the inferior colliculus (IC) being the main target of the projections. Here, using a retrograde tracer, we demonstrate that three forebrain structures, namely, the medial prefrontal cortex (mPFC), amygdala, and auditory cortex (AC), send direct descending projections to the central nucleus of IC. We found that all three structures projected to the bilateral IC. A comparison of the patterns of retrogradely labeled cells across animals suggests that the ipsilateral AC-IC projection is topographically organized, whereas mPFC-IC or amygdala-IC projections did not show clear topographic organization. Together with evidence from previous studies, these results suggest that three descending projections to the IC form loops between the forebrain and IC to make attention to various vocal sounds.</abstract><cop>Ireland</cop><pub>Elsevier B.V</pub><pmid>31494222</pmid><doi>10.1016/j.neulet.2019.134481</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0003-4516-9283</orcidid></addata></record> |
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subjects | Auditory cortex Basolateral amygdala Descending projection Inferior colliculus Medial prefrontal cortex |
title | Three forebrain structures directly inform the auditory midbrain of echolocating bats |
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