Are the mechanisms for stream segregation shared among anurans and other tetrapods?

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearch

Abstract

Many male anurans (frogs and toads) call in large aggregations. Since the fundamental task of anuran auditory communication prob-
ably is to attract and localize potential mates, segregation of the callers is likely an important task for the auditory system. Behavioral
experiments have shown that elements of stream segregation, based on frequency separation and spatial separation, can be demonstrated
in anurans. The neural processing of these cues is interesting, because most auditory processing probably takes place in the midbrain
torus semicircularis (TS, homolog to the inferior colliculus). It has been shown that spatial release from masking is sharpened by 6 dB in
the TS, and that neurons in the TS are selective for call rates and number of call pulses. However, recently electrical stimulation of tha-
lamic structures have demonstrated possible attentional modulation of TS responses that could also function in stream segregation. The
modulation was call-specific and could also enhance binaural cues. In conclusion, many of the elements involved in auditory segregation
in other animals are also found in anurans. However, it is uncertain whether the underlying mechanisms are similar. One crucial element
in primate sound segregation—the representation of the competing streams in the neural responses—has so far not been demonstrated in
anurans, and the most robust elements of stream segregation is really based on frequency processing, a relatively simple and ubiquitous
property of most auditory systems.
Original languageEnglish
Publication date2015
Number of pages1
Publication statusPublished - 2015
EventThe 169th meeting of the Acoustical Society of America, Pittsburgh USAA - Wyndham Grand Downtown Hotel, Pittsburgh, United States
Duration: 18. May 201522. May 2015
Conference number: 169

Conference

ConferenceThe 169th meeting of the Acoustical Society of America, Pittsburgh USAA
Number169
LocationWyndham Grand Downtown Hotel
CountryUnited States
CityPittsburgh
Period18/05/201522/05/2015

Cite this

Christensen-Dalsgaard, J. (2015). Are the mechanisms for stream segregation shared among anurans and other tetrapods?. Abstract from The 169th meeting of the Acoustical Society of America, Pittsburgh USAA, Pittsburgh, United States.
Christensen-Dalsgaard, Jakob. / Are the mechanisms for stream segregation shared among anurans and other tetrapods?. Abstract from The 169th meeting of the Acoustical Society of America, Pittsburgh USAA, Pittsburgh, United States.1 p.
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abstract = "Many male anurans (frogs and toads) call in large aggregations. Since the fundamental task of anuran auditory communication prob-ably is to attract and localize potential mates, segregation of the callers is likely an important task for the auditory system. Behavioralexperiments have shown that elements of stream segregation, based on frequency separation and spatial separation, can be demonstratedin anurans. The neural processing of these cues is interesting, because most auditory processing probably takes place in the midbraintorus semicircularis (TS, homolog to the inferior colliculus). It has been shown that spatial release from masking is sharpened by 6 dB inthe TS, and that neurons in the TS are selective for call rates and number of call pulses. However, recently electrical stimulation of tha-lamic structures have demonstrated possible attentional modulation of TS responses that could also function in stream segregation. Themodulation was call-specific and could also enhance binaural cues. In conclusion, many of the elements involved in auditory segregationin other animals are also found in anurans. However, it is uncertain whether the underlying mechanisms are similar. One crucial elementin primate sound segregation—the representation of the competing streams in the neural responses—has so far not been demonstrated inanurans, and the most robust elements of stream segregation is really based on frequency processing, a relatively simple and ubiquitousproperty of most auditory systems.",
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language = "English",
note = "null ; Conference date: 18-05-2015 Through 22-05-2015",

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Are the mechanisms for stream segregation shared among anurans and other tetrapods? / Christensen-Dalsgaard, Jakob.

2015. Abstract from The 169th meeting of the Acoustical Society of America, Pittsburgh USAA, Pittsburgh, United States.

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearch

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N2 - Many male anurans (frogs and toads) call in large aggregations. Since the fundamental task of anuran auditory communication prob-ably is to attract and localize potential mates, segregation of the callers is likely an important task for the auditory system. Behavioralexperiments have shown that elements of stream segregation, based on frequency separation and spatial separation, can be demonstratedin anurans. The neural processing of these cues is interesting, because most auditory processing probably takes place in the midbraintorus semicircularis (TS, homolog to the inferior colliculus). It has been shown that spatial release from masking is sharpened by 6 dB inthe TS, and that neurons in the TS are selective for call rates and number of call pulses. However, recently electrical stimulation of tha-lamic structures have demonstrated possible attentional modulation of TS responses that could also function in stream segregation. Themodulation was call-specific and could also enhance binaural cues. In conclusion, many of the elements involved in auditory segregationin other animals are also found in anurans. However, it is uncertain whether the underlying mechanisms are similar. One crucial elementin primate sound segregation—the representation of the competing streams in the neural responses—has so far not been demonstrated inanurans, and the most robust elements of stream segregation is really based on frequency processing, a relatively simple and ubiquitousproperty of most auditory systems.

AB - Many male anurans (frogs and toads) call in large aggregations. Since the fundamental task of anuran auditory communication prob-ably is to attract and localize potential mates, segregation of the callers is likely an important task for the auditory system. Behavioralexperiments have shown that elements of stream segregation, based on frequency separation and spatial separation, can be demonstratedin anurans. The neural processing of these cues is interesting, because most auditory processing probably takes place in the midbraintorus semicircularis (TS, homolog to the inferior colliculus). It has been shown that spatial release from masking is sharpened by 6 dB inthe TS, and that neurons in the TS are selective for call rates and number of call pulses. However, recently electrical stimulation of tha-lamic structures have demonstrated possible attentional modulation of TS responses that could also function in stream segregation. Themodulation was call-specific and could also enhance binaural cues. In conclusion, many of the elements involved in auditory segregationin other animals are also found in anurans. However, it is uncertain whether the underlying mechanisms are similar. One crucial elementin primate sound segregation—the representation of the competing streams in the neural responses—has so far not been demonstrated inanurans, and the most robust elements of stream segregation is really based on frequency processing, a relatively simple and ubiquitousproperty of most auditory systems.

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Christensen-Dalsgaard J. Are the mechanisms for stream segregation shared among anurans and other tetrapods?. 2015. Abstract from The 169th meeting of the Acoustical Society of America, Pittsburgh USAA, Pittsburgh, United States.