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fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
Published on: May 23, 2017
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The constitutive differential transcriptome of a brain circuit for vocal learning
Peter V Lovell1, Nicole A Huizinga1, Samantha R Friedrich1
1Department of Behavioral Neuroscience, Oregon Health and Sciences University, 3181 Sam Jackson Park Rd L470, Portland, OR, USA.
BMC Genomics
|April 5, 2018
Summary
Researchers identified over 3300 differentially regulated genes in songbird vocal nuclei, revealing molecular pathways crucial for vocal learning and song control. This study advances understanding of learned vocal behaviors in vertebrates.
Area of Science:
- Neuroscience
- Genomics
- Behavioral Biology
Background:
- Vocal learning, the ability to imitate sounds, is rare in nature, found in humans and some bird species.
- In songbirds, vocal learning depends on a specialized network of brain regions known as the song control system.
- A comprehensive understanding of the genes within this system is currently lacking.
Purpose of the Study:
- To conduct a thorough molecular characterization of the song control system in adult male zebra finches.
- To identify genes and molecular pathways associated with vocal learning and song production.
Main Methods:
- Utilized microarray analysis to identify differentially regulated genes across vocal nuclei.
- Performed in situ hybridizations for a targeted analysis of 380 specific genes.
- Applied bioinformatics to analyze gene functions and associated molecular pathways.
Main Results:
- Identified over 3300 differentially regulated genes in the vocal nuclei compared to adjacent brain regions.
- Bioinformatics analysis implicated these genes in cellular morphogenesis, excitability, neurotransmission, axonal guidance, cell-cell interactions, and survival.
- Detailed analysis of gene families provided insights into potential modulators of the song system's function.
Conclusions:
- This study offers one of the most extensive molecular profiles of a brain circuit supporting learned behavior in vertebrates.
- The findings provide new molecular insights into the song control circuitry's functional properties.
- Generated a list of potential targets for future genetic and pharmacological studies on vocal learning regulation.
Keywords:
birdsongbraincDNA microarraygene expressionmolecularoligo arrayspeech and languagevocal learningMore Related Videos
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