1
40
2
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1523/jneurosci.20-22-08533.2000" target="_blank" rel="noreferrer noopener">http://doi.org/10.1523/jneurosci.20-22-08533.2000</a>
Pages
8533–8541
Issue
22
Volume
20
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Spectral integration in the inferior colliculus of the mustached bat.
Publisher
An entity responsible for making the resource available
The Journal of neuroscience : the official journal of the Society for Neuroscience
Date
A point or period of time associated with an event in the lifecycle of the resource
2000
2000-11
Subject
The topic of the resource
Animals; Chiroptera/*physiology; Neurons/physiology; Acoustic Stimulation; Inferior Colliculi/*physiology; Action Potentials/physiology; Auditory Threshold/physiology; Brain Mapping; Reaction Time/physiology; Pitch Perception/*physiology; Auditory Pathways/physiology; Animal Communication; Sound Spectrography; Stereotaxic Techniques; Electrodes; Animal/physiology; Vocalization; Implanted
Creator
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Leroy S A; Wenstrup J J
Description
An account of the resource
Acoustic behaviors including orientation and social communication depend on neural integration of information across the sound spectrum. In many species, spectral integration is performed by combination-sensitive neurons, responding best when distinct spectral elements in sounds are combined. These are generally considered a feature of information processing in the auditory forebrain. In the mustached bat's inferior colliculus (IC), they are common in frequency representations associated with sonar signals but have not been reported elsewhere in this bat's IC or the IC of other species. We examined the presence of combination-sensitive neurons in frequency representations of the mustached bat's IC not associated with biosonar. Seventy-five single-unit responses were recorded with the best frequencies in 10-23 or 32-47 kHz bands. Twenty-six displayed single excitatory tuning curves in one band with no additional responsiveness to a second signal in another band. The remaining 49 responded to sounds in both 10-23 and 32-47 kHz bands, but response types varied. Sounds in the higher band were usually excitatory, whereas sounds in the lower band either facilitated or inhibited responses to the higher frequency signal. Interactions were usually strongest when the higher and lower frequency stimuli were presented simultaneously, but the strength of interactions varied. Over one-third of the neurons formed a distinct subset; they responded most sensitively to bandpass noise, and all were combination sensitive. We suggest that these combination-sensitive interactions are activated by elements of mustached bat social vocalizations. If so, neuronal integration characterizing analysis of social vocalizations in many species occurs in the IC.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1523/jneurosci.20-22-08533.2000" target="_blank" rel="noreferrer noopener">10.1523/jneurosci.20-22-08533.2000</a>
Rights
Information about rights held in and over the resource
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
2000
Acoustic Stimulation
Action Potentials/physiology
Animal Communication
Animal/physiology
Animals
Auditory Pathways/physiology
Auditory Threshold/physiology
Brain Mapping
Chiroptera/*physiology
College of Anatomy & Neurobiology
Department of Anatomy & Neurobiology
Electrodes
Implanted
Inferior Colliculi/*physiology
Leroy S A
NEOMED College of Medicine
Neurons/physiology
Pitch Perception/*physiology
Reaction Time/physiology
Sound Spectrography
Stereotaxic Techniques
The Journal of neuroscience : the official journal of the Society for Neuroscience
Vocalization
Wenstrup J J
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1152/jn.00634.2005" target="_blank" rel="noreferrer noopener">http://doi.org/10.1152/jn.00634.2005</a>
Pages
88–105
Issue
1
Volume
95
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Auditory responses in the cochlear nucleus of awake mustached bats: precursors to spectral integration in the auditory midbrain.
Publisher
An entity responsible for making the resource available
Journal of neurophysiology
Date
A point or period of time associated with an event in the lifecycle of the resource
2006
2006-01
Subject
The topic of the resource
Acoustic Stimulation/methods; Action Potentials/*physiology; Animals; Auditory; Brain Mapping; Brain Stem/*physiology; Chiroptera/*physiology; Cochlear Nucleus/*physiology; Evoked Potentials; Mesencephalon/physiology; Nerve Net/*physiology; Pitch Perception/*physiology; Wakefulness/physiology
Creator
An entity primarily responsible for making the resource
Marsh Robert A; Nataraj Kiran; Gans Donald; Portfors Christine V; Wenstrup Jeffrey J
Description
An account of the resource
In the cochlear nucleus (CN) of awake mustached bats, single- and two-tone stimuli were used to examine how responses in major CN subdivisions contribute to spectrotemporal integrative features in the inferior colliculus (IC). Across CN subdivisions, the proportional representation of frequencies differed. A striking result was the substantial number of units tuned to frequencies \textless23 kHz. Across frequency bands, temporal response patterns, latency, and spontaneous discharge differed. For example, the 23- to 30-kHz representation, which comprises the fundamental of the sonar call, had an unusually high proportion of units with onset responses (39%) and low spontaneous rates (53%). Units tuned to 58-59 kHz, corresponding to the sharply tuned cochlear resonance, had slightly but significantly longer latencies than other bands. In units tuned to frequencies \textgreater30 kHz, 31% displayed a secondary excitatory peak, usually between 10 and 22 kHz. The secondary peak may originate in cochlear mechanisms for some units, but in others it may result from convergent input onto CN neurons. In 20% of units tested with two-tone stimuli, suppression of best frequency (BF) responses was tuned at least an octave below BF. These properties may underlie similar IC responses. However, other forms of spectral interaction present in IC were absent in CN: we found no facilitatory combination-sensitive interactions and very few combination-sensitive inhibitory interactions of the dominant IC type in which inhibition was tuned to 23-30 kHz. Such interactions arise above CN. Distinct forms of spectral integration thus originate at different levels of the ascending auditory pathway.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1152/jn.00634.2005" target="_blank" rel="noreferrer noopener">10.1152/jn.00634.2005</a>
Rights
Information about rights held in and over the resource
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
2006
Acoustic Stimulation/methods
Action Potentials/*physiology
Animals
Auditory
Brain Mapping
Brain Stem/*physiology
Chiroptera/*physiology
Cochlear Nucleus/*physiology
College of Anatomy & Neurobiology
Department of Anatomy & Neurobiology
Evoked Potentials
Gans Donald
Journal of neurophysiology
Marsh Robert A
Mesencephalon/physiology
Nataraj Kiran
NEOMED College of Medicine
Nerve Net/*physiology
Pitch Perception/*physiology
Portfors Christine V
Wakefulness/physiology
Wenstrup Jeffrey J