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.3572-07.2008" target="_blank" rel="noreferrer noopener">http://doi.org/10.1523/JNEUROSCI.3572-07.2008</a>
Pages
80–90
Issue
1
Volume
28
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
A name given to the resource
Glycinergic "inhibition" mediates selective excitatory responses to combinations of sounds.
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
2008
2008-01
Subject
The topic of the resource
Animals; Acoustic Stimulation/methods; Neural Inhibition/drug effects/*physiology; *Sound; Excitatory Amino Acid Antagonists/pharmacology; Action Potentials/drug effects/physiology; Auditory Pathways/*physiology; Glycine Agents/pharmacology; Glycine/*physiology; Chiroptera/physiology; Drug Interactions; GABA Agents/pharmacology; Inferior Colliculi/cytology/drug effects/*physiology; Iontophoresis/methods; Neurons/drug effects/physiology/radiation effects; Piperazines/pharmacology; Dose-Response Relationship; Receptors; Radiation; GABA/physiology; N-Methyl-D-Aspartate/antagonists & inhibitors/physiology
Creator
An entity primarily responsible for making the resource
Sanchez Jason Tait; Gans Donald; Wenstrup Jeffrey J
Description
An account of the resource
In the mustached bat's inferior colliculus (IC), combination-sensitive neurons display time-sensitive facilitatory interactions between inputs tuned to distinct spectral elements in sonar or social vocalizations. Here we compare roles of ionotropic receptors to glutamate (iGluRs), glycine (GlyRs), and GABA (GABA(A)Rs) in facilitatory combination-sensitive interactions. Facilitatory responses to 36 single IC neurons were recorded before, during, and after local application of antagonists to these receptors. The NMDA receptor antagonist CPP [(+/-)-3-(2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid], alone (n = 14) or combined with AMPA receptor antagonist NBQX (n = 22), significantly reduced or eliminated responses to best frequency (BF) sounds across a broad range of sound levels, but did not eliminate combination-sensitive facilitation. In a subset of neurons, GABA(A)R blockers bicuculline or gabazine were applied in addition to iGluR blockers. GABA(A)R blockers did not "uncover" residual iGluR-mediated excitation, and only rarely eliminated facilitation. In nearly all neurons for which the GlyR antagonist strychnine was applied in addition to iGluR blockade (22 of 23 neurons, with or without GABA(A)R blockade), facilitatory interactions were eliminated. Thus, neither glutamate nor GABA neurotransmission are required for facilitatory combination-sensitive interactions in IC. Instead, facilitation may depend entirely on glycinergic inputs that are presumed to be inhibitory. We propose that glycinergic inputs tuned to two distinct spectral elements in vocal signals each activate postinhibitory rebound excitation. When rebound excitations from two spectral elements coincide, the neuron discharges. Excitation from glutamatergic inputs, tuned to the BF of the neuron, is superimposed onto this facilitatory interaction, presumably mediating responses to a broader range of acoustic signals.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1523/JNEUROSCI.3572-07.2008" target="_blank" rel="noreferrer noopener">10.1523/JNEUROSCI.3572-07.2008</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).
*Sound
2008
Acoustic Stimulation/methods
Action Potentials/drug effects/physiology
Animals
Auditory Pathways/*physiology
Chiroptera/physiology
College of Anatomy & Neurobiology
Department of Anatomy & Neurobiology
Dose-Response Relationship
Drug Interactions
Excitatory Amino Acid Antagonists/pharmacology
GABA Agents/pharmacology
GABA/physiology
Gans Donald
Glycine Agents/pharmacology
Glycine/*physiology
Inferior Colliculi/cytology/drug effects/*physiology
Iontophoresis/methods
N-Methyl-D-Aspartate/antagonists & inhibitors/physiology
NEOMED College of Medicine
Neural Inhibition/drug effects/*physiology
Neurons/drug effects/physiology/radiation effects
Piperazines/pharmacology
Radiation
Receptors
Sanchez Jason Tait
The Journal of neuroscience : the official journal of the Society for Neuroscience
Wenstrup Jeffrey 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/10.1523/JNEUROSCI.2894-06.2007" target="_blank" rel="noreferrer noopener">http://doi.org/10.1523/JNEUROSCI.2894-06.2007</a>
Pages
1954–1963
Issue
8
Volume
27
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
A name given to the resource
Contribution of NMDA and AMPA receptors to temporal patterning of auditory responses in the inferior colliculus.
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
2007
2007-02
Subject
The topic of the resource
Animals; Chiroptera/*physiology; Neurons/physiology; Action Potentials/drug effects; Excitatory Amino Acid Antagonists/pharmacology; Quinoxalines/pharmacology; Inferior Colliculi/cytology/drug effects/*physiology; Piperazines/pharmacology; *Acoustic Stimulation; Reaction Time/drug effects/*physiology; N-Methyl-D-Aspartate/*physiology; Receptors; AMPA/*physiology
Creator
An entity primarily responsible for making the resource
Sanchez Jason Tait; Gans Donald; Wenstrup Jeffrey J
Description
An account of the resource
Although NMDA receptors (NMDARs) are associated with synaptic plasticity, they form an essential part of responses to sensory stimuli. We compared contributions of glutamatergic NMDARs and AMPA receptors (AMPARs) to auditory responses in the inferior colliculus (IC) of awake, adult mustached bats. We examined the magnitude and temporal pattern of responses to tonal signals in single units before, during, and after local micro-iontophoretic application of selective antagonists to AMPARs [NBQX (1,2,3,4-tetrahydro-6-nitro-2,3-dioxo-benzo[f]quinoxaline-7-sulfonamide)] and NMDARs [CPP ((+/-)3-(2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid)]. Combined blockade of AMPARs and NMDARs eliminated excitatory responses in nearly all neurons, whereas separate blockade of each receptor was quantitatively similar, causing substantial (\textgreater 50%) spike reductions in approximately 75% of units. The major result was that effects of receptor blockade were most closely related to the first-spike latency of a unit. Thus, AMPAR blockade substantially reduced spikes in all short-latency units (\textless 12 ms) but never in long-latency units (\textgreater or = 12 ms). NMDAR blockade had variable effects on short-latency units but reduced spikes substantially for all long-latency units. There were no distinct contributions of AMPARs and NMDARs to early and late elements of responses. Thus, AMPAR blockade reduced early (onset) spikes somewhat more effectively than NMDAR blockade in short-latency units, but NMDAR blockade reduced onset spikes more effectively in long-latency units. AMPAR and NMDAR blockade were equally effective in reducing later elements of sustained responses in short-latency units, whereas NMDAR blockade was much more effective in long-latency units. These results indicate that NMDARs play multiple roles for signal processing in adult IC neurons.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1523/JNEUROSCI.2894-06.2007" target="_blank" rel="noreferrer noopener">10.1523/JNEUROSCI.2894-06.2007</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).
*Acoustic Stimulation
2007
Action Potentials/drug effects
AMPA/*physiology
Animals
Chiroptera/*physiology
College of Anatomy & Neurobiology
Department of Anatomy & Neurobiology
Excitatory Amino Acid Antagonists/pharmacology
Gans Donald
Inferior Colliculi/cytology/drug effects/*physiology
N-Methyl-D-Aspartate/*physiology
NEOMED College of Medicine
Neurons/physiology
Piperazines/pharmacology
Quinoxalines/pharmacology
Reaction Time/drug effects/*physiology
Receptors
Sanchez Jason Tait
The Journal of neuroscience : the official journal of the Society for Neuroscience
Wenstrup Jeffrey J