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A unified framework for the organization of the primate auditory cortex
Simon Baumann1, Christopher I Petkov, Timothy D Griffiths
1Medical Faculty, Institute of Neuroscience, Newcastle University Newcastle upon Tyne, UK.
Frontiers in Systems Neuroscience
|May 4, 2013
Summary
A new model reconciles human and primate auditory cortex organization, enabling better cross-species comparisons of auditory processing and brain mapping. This unified framework improves understanding of auditory functional areas.
Area of Science:
- Neuroscience
- Comparative Anatomy
- Auditory Neuroscience
Background:
- A common scheme organizes the auditory cortex in non-human primates, facilitating comparisons of auditory processing across species.
- This scheme, supported by extensive data, includes nearly a dozen functional areas.
- Applying this scheme to humans is challenging due to controversies surrounding human tonotopic map organization.
Purpose of the Study:
- To reconcile conflicting models of human auditory cortex organization.
- To propose a unified framework for comparing auditory cortex organization across primate species, including humans.
Main Methods:
- Review and reconciliation of existing functional and structural data on primate auditory cortex.
- Analysis of observations to resolve discrepancies between human tonotopic map models.
Main Results:
- Observations presented reconcile previous, conflicting models of human auditory cortex organization.
- A distinct model is proposed, suggesting human cortical organization is more similar to other primates than previously thought.
- This unified framework supports robust cross-species comparisons.
Conclusions:
- The proposed model offers a unified framework for understanding auditory cortex organization across primates.
- This facilitates more detailed and accurate comparisons of auditory processing and functional areas between humans and other primates.
- Resolving the controversy enhances comparative auditory neuroscience research.
Related Concept Videos
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01:14Motor and Sensory Areas of the Cortex
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01:13The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
01:21Association Areas of the Cortex
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