| Spectral integration in the inferior colliculus of the CBA/CaJ mouse. | |
| | |
MedLine Citation:
|
PMID: 16216422 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The inferior colliculus receives a massive convergence of inputs and in the mustached bat, this convergence leads to the creation of neurons in the inferior colliculus that integrate information across multiple frequency bands. These neurons are tuned to multiple frequency bands or are combination-sensitive; responding best to the combination of two signals of different frequency composition. The importance of combination-sensitive neurons in processing echolocation signals is well described, and it has been thought that combination sensitivity is a neural specialization for echolocation behaviors. Combination sensitivity and other response properties indicative of spectral integration have not been thoroughly examined in the inferior colliculus of non-echolocating mammals. In this study we tested the hypothesis that integration across frequencies occurs in the inferior colliculus of mice. We tested excitatory frequency response areas in the inferior colliculus of unanesthetized mice by varying the frequency of a single tone between 6 and 100 kHz. We then tested combination-sensitive responses by holding one tone at the unit's best frequency, and varying the frequency and intensity of a second tone. Thirty-two percent of the neurons were tuned to multiple frequency bands, 16% showed combination-sensitive facilitation and another 12% showed combination-sensitive inhibition. These findings suggests that the neural mechanisms underlying processing of complex sounds in the inferior colliculus share some common features among mammals as different as the bat and the mouse. |
| | |
Authors:
|
C V Portfors; R A Felix |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural Date: 2005-10-10 |
Journal Detail:
|
Title: Neuroscience Volume: 136 ISSN: 0306-4522 ISO Abbreviation: Neuroscience Publication Date: 2005 |
Date Detail:
|
Created Date: 2005-12-19 Completed Date: 2006-04-12 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7605074 Medline TA: Neuroscience Country: United States |
Other Details:
|
Languages: eng Pagination: 1159-70 Citation Subset: IM |
Affiliation:
|
School of Biological Sciences, 14204 Northeast Salmon Creek Avenue, Washington State University, Vancouver, WA 98686, USA. portfors@vancouver.wsu.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation
/
methods Action Potentials / physiology* Animals Auditory Pathways / physiology Auditory Perception / physiology* Auditory Threshold / physiology Brain Mapping Dose-Response Relationship, Radiation Inferior Colliculi / cytology* Mice Mice, Inbred CBA Neural Inhibition / physiology Neurons / classification, physiology* Spectrum Analysis* |
| Grant Support | |
ID/Acronym/Agency:
|
NIDCD 04733/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: A study of the role of neuro-glial remodeling in the oxytocin system at lactation.
Next Document: Chronic exposure to typical or atypical antipsychotics in rodents: temporal effects on central alpha...