Spatial sensitivity of neurons in the anterior, posterior, and primary fields of cat auditory cortex
We assessed the spatial-tuning properties of units in the cat’s anterior auditory field (AAF) and compared them with those observed previously in the primary (A1) and posterior auditory fields (PAF). Multi-channel, silicon-substrate probes were used to record single- and multi-unit activity from the...
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| Veröffentlicht in: | Hearing research 2008-06, Vol.240 (1), p.22-41 |
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| creator | Harrington, Ian A. Stecker, G. Christopher Macpherson, Ewan A. Middlebrooks, John C. |
| description | We assessed the spatial-tuning properties of units in the cat’s anterior auditory field (AAF) and compared them with those observed previously in the primary (A1) and posterior auditory fields (PAF). Multi-channel, silicon-substrate probes were used to record single- and multi-unit activity from the right hemispheres of α-chloralose-anesthetized cats. Spatial tuning was assessed using broadband noise bursts that varied in azimuth or elevation. Response latencies were slightly, though significantly, shorter in AAF than A1, and considerably shorter in both of those fields than in PAF. Compared to PAF, spike counts and latencies were more poorly modulated by changes in stimulus location in AAF and A1, particularly at higher sound pressure levels. Moreover, units in AAF and A1 demonstrated poorer level tolerance than units in PAF with spike rates modulated as much by changes in stimulus intensity as changes in stimulus location. Finally, spike-pattern-recognition analyses indicated that units in AAF transmitted less spatial information, on average, than did units in PAF—an observation consistent with recent evidence that PAF is necessary for sound-localization behavior, whereas AAF is not. |
| doi_str_mv | 10.1016/j.heares.2008.02.004 |
| format | Article |
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Christopher ; Macpherson, Ewan A. ; Middlebrooks, John C.</creator><creatorcontrib>Harrington, Ian A. ; Stecker, G. Christopher ; Macpherson, Ewan A. ; Middlebrooks, John C.</creatorcontrib><description>We assessed the spatial-tuning properties of units in the cat’s anterior auditory field (AAF) and compared them with those observed previously in the primary (A1) and posterior auditory fields (PAF). Multi-channel, silicon-substrate probes were used to record single- and multi-unit activity from the right hemispheres of α-chloralose-anesthetized cats. Spatial tuning was assessed using broadband noise bursts that varied in azimuth or elevation. Response latencies were slightly, though significantly, shorter in AAF than A1, and considerably shorter in both of those fields than in PAF. Compared to PAF, spike counts and latencies were more poorly modulated by changes in stimulus location in AAF and A1, particularly at higher sound pressure levels. Moreover, units in AAF and A1 demonstrated poorer level tolerance than units in PAF with spike rates modulated as much by changes in stimulus intensity as changes in stimulus location. Finally, spike-pattern-recognition analyses indicated that units in AAF transmitted less spatial information, on average, than did units in PAF—an observation consistent with recent evidence that PAF is necessary for sound-localization behavior, whereas AAF is not.</description><identifier>ISSN: 0378-5955</identifier><identifier>EISSN: 1878-5891</identifier><identifier>DOI: 10.1016/j.heares.2008.02.004</identifier><identifier>PMID: 18359176</identifier><identifier>CODEN: HERED3</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Acoustic Stimulation ; Animals ; Auditory cortex ; Auditory Cortex - cytology ; Auditory Cortex - physiology ; Auditory Pathways - cytology ; Auditory Pathways - physiology ; Auditory Perception ; Auditory Threshold ; Biological and medical sciences ; Cats ; Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation ; Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology ; Evoked Potentials, Auditory ; Female ; Fundamental and applied biological sciences. Psychology ; Male ; Medical sciences ; Neurons - physiology ; Non tumoral diseases ; Otorhinolaryngology. 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Christopher</creatorcontrib><creatorcontrib>Macpherson, Ewan A.</creatorcontrib><creatorcontrib>Middlebrooks, John C.</creatorcontrib><title>Spatial sensitivity of neurons in the anterior, posterior, and primary fields of cat auditory cortex</title><title>Hearing research</title><addtitle>Hear Res</addtitle><description>We assessed the spatial-tuning properties of units in the cat’s anterior auditory field (AAF) and compared them with those observed previously in the primary (A1) and posterior auditory fields (PAF). Multi-channel, silicon-substrate probes were used to record single- and multi-unit activity from the right hemispheres of α-chloralose-anesthetized cats. Spatial tuning was assessed using broadband noise bursts that varied in azimuth or elevation. Response latencies were slightly, though significantly, shorter in AAF than A1, and considerably shorter in both of those fields than in PAF. Compared to PAF, spike counts and latencies were more poorly modulated by changes in stimulus location in AAF and A1, particularly at higher sound pressure levels. Moreover, units in AAF and A1 demonstrated poorer level tolerance than units in PAF with spike rates modulated as much by changes in stimulus intensity as changes in stimulus location. Finally, spike-pattern-recognition analyses indicated that units in AAF transmitted less spatial information, on average, than did units in PAF—an observation consistent with recent evidence that PAF is necessary for sound-localization behavior, whereas AAF is not.</description><subject>Acoustic Stimulation</subject><subject>Animals</subject><subject>Auditory cortex</subject><subject>Auditory Cortex - cytology</subject><subject>Auditory Cortex - physiology</subject><subject>Auditory Pathways - cytology</subject><subject>Auditory Pathways - physiology</subject><subject>Auditory Perception</subject><subject>Auditory Threshold</subject><subject>Biological and medical sciences</subject><subject>Cats</subject><subject>Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation</subject><subject>Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology</subject><subject>Evoked Potentials, Auditory</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Neurons - physiology</subject><subject>Non tumoral diseases</subject><subject>Otorhinolaryngology. Stomatology</subject><subject>Pressure</subject><subject>Reaction Time</subject><subject>Sound Localization</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>0378-5955</issn><issn>1878-5891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9UcGO0zAQtRCI7S78AUK-wImWsRM7yQUJrWBBWokDcLac8YS6Su1iOxX796Rq2IULpxmN33vzxo-xFwI2AoR-u9tsySbKGwnQbkBuAOpHbCXapl2rthOP2QqqU98pdcEuc94BCFXV8im7EG2lOtHoFXNfD7Z4O_JMIfvij77c8TjwQFOKIXMfeNkSt6FQ8jG94YeY_7Q2OH5Ifm_THR88jS6fmGgLt5PzJc5jjKnQr2fsyWDHTM-XesW-f_zw7frT-vbLzefr97drVKopawV2QATUrRuwU6Jxg6x1j63rUINqq15i3TSDhB46Pd-Ffed6QIFadNTL6oq9O-sepn5PDimUZEezeDTRevPvS_Bb8yMejVRCaaFngdeLQIo_J8rF7H1GGkcbKE7ZNEIrWdf1DKzPQEwx50TD_RIB5hSP2ZlzPOYUjwFp5nhm2su_DT6QljxmwKsFYDPacUg2oM_3OAm16CoBD5fS_J1HT8lk9BSQnE-Exbjo_-_kNxbUsvU</recordid><startdate>20080601</startdate><enddate>20080601</enddate><creator>Harrington, Ian A.</creator><creator>Stecker, G. 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Christopher ; Macpherson, Ewan A. ; Middlebrooks, John C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c557t-50afcc0c68dfc9517df246bc8d9c60583b2c477f20b096595cb9db0c1c619eb23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Acoustic Stimulation</topic><topic>Animals</topic><topic>Auditory cortex</topic><topic>Auditory Cortex - cytology</topic><topic>Auditory Cortex - physiology</topic><topic>Auditory Pathways - cytology</topic><topic>Auditory Pathways - physiology</topic><topic>Auditory Perception</topic><topic>Auditory Threshold</topic><topic>Biological and medical sciences</topic><topic>Cats</topic><topic>Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation</topic><topic>Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology</topic><topic>Evoked Potentials, Auditory</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Neurons - physiology</topic><topic>Non tumoral diseases</topic><topic>Otorhinolaryngology. Stomatology</topic><topic>Pressure</topic><topic>Reaction Time</topic><topic>Sound Localization</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Harrington, Ian A.</creatorcontrib><creatorcontrib>Stecker, G. Christopher</creatorcontrib><creatorcontrib>Macpherson, Ewan A.</creatorcontrib><creatorcontrib>Middlebrooks, John C.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>ComDisDome</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Hearing research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Harrington, Ian A.</au><au>Stecker, G. Christopher</au><au>Macpherson, Ewan A.</au><au>Middlebrooks, John C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spatial sensitivity of neurons in the anterior, posterior, and primary fields of cat auditory cortex</atitle><jtitle>Hearing research</jtitle><addtitle>Hear Res</addtitle><date>2008-06-01</date><risdate>2008</risdate><volume>240</volume><issue>1</issue><spage>22</spage><epage>41</epage><pages>22-41</pages><issn>0378-5955</issn><eissn>1878-5891</eissn><coden>HERED3</coden><abstract>We assessed the spatial-tuning properties of units in the cat’s anterior auditory field (AAF) and compared them with those observed previously in the primary (A1) and posterior auditory fields (PAF). Multi-channel, silicon-substrate probes were used to record single- and multi-unit activity from the right hemispheres of α-chloralose-anesthetized cats. Spatial tuning was assessed using broadband noise bursts that varied in azimuth or elevation. Response latencies were slightly, though significantly, shorter in AAF than A1, and considerably shorter in both of those fields than in PAF. Compared to PAF, spike counts and latencies were more poorly modulated by changes in stimulus location in AAF and A1, particularly at higher sound pressure levels. Moreover, units in AAF and A1 demonstrated poorer level tolerance than units in PAF with spike rates modulated as much by changes in stimulus intensity as changes in stimulus location. Finally, spike-pattern-recognition analyses indicated that units in AAF transmitted less spatial information, on average, than did units in PAF—an observation consistent with recent evidence that PAF is necessary for sound-localization behavior, whereas AAF is not.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>18359176</pmid><doi>10.1016/j.heares.2008.02.004</doi><tpages>20</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Acoustic Stimulation Animals Auditory cortex Auditory Cortex - cytology Auditory Cortex - physiology Auditory Pathways - cytology Auditory Pathways - physiology Auditory Perception Auditory Threshold Biological and medical sciences Cats Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology Evoked Potentials, Auditory Female Fundamental and applied biological sciences. Psychology Male Medical sciences Neurons - physiology Non tumoral diseases Otorhinolaryngology. Stomatology Pressure Reaction Time Sound Localization Vertebrates: nervous system and sense organs |
| title | Spatial sensitivity of neurons in the anterior, posterior, and primary fields of cat auditory cortex |
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