Journal
JOURNAL OF COGNITIVE NEUROSCIENCE
Volume 13, Issue 1, Pages 1-7Publisher
M I T PRESS
DOI: 10.1162/089892901564108
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Funding
- NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS [R01DC003489] Funding Source: NIH RePORTER
- NIDCD NIH HHS [R01-DC-03489] Funding Source: Medline
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The concept of hierarchical processing-that the sensory world is broken down into basic features later integrated into more complex stimulus preferences-originated from investigations of the visual cortex. Recent studies of the auditory cortex in nonhuman primates revealed a comparable architecture, in which core areas, receiving direct input from the thalamus, in turn, provide input to a surrounding belt. Here functional magnetic resonance imaging (fMRI) shows that the human auditory cortex displays a similar hierarchical organization: pure tones (PTs) activate primarily the core, whereas belt areas prefer complex sounds, such as narrow-band noise bursts.
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