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.
|Original language||English (US)|
|Number of pages||7|
|Journal||Journal of cognitive neuroscience|
|State||Published - Jan 1 2001|
ASJC Scopus subject areas
- Cognitive Neuroscience