منابع مشابه
How Dopamine Shapes Representations in Auditory Cortex
The neural representation of sound in the auditory cortex is not invariably predetermined by its acoustical properties, but it is constantly reshaped while the listener acquires new experiences. Such plastic changes are a prerequisite for lifelong learning and allow some degree of rehabilitation after brain injuries. Several neurotransmitter systems modulate these plastic changes. In this paper...
متن کاملPhonological Feature Representations in Auditory Cortex
Although phonemes are the smallest linguistic units that speakers are usually aware of, a good deal of linguistic evidence indicates that sub-phonemic features are the smallest building blocks of language. We present evidence from biomagnetic studies that indicate that representations of discrete phonological feature categories are available to left-hemisphere auditory cortex. Sequences of voic...
متن کاملHierarchical representations in the auditory cortex.
Understanding the neural mechanisms of invariant object recognition remains one of the major unsolved problems in neuroscience. A common solution that is thought to be employed by diverse sensory systems is to create hierarchical representations of increasing complexity and tolerance. However, in the mammalian auditory system many aspects of this hierarchical organization remain undiscovered, i...
متن کاملEgocentric and allocentric representations in auditory cortex
A key function of the brain is to provide a stable representation of an object's location in the world. In hearing, sound azimuth and elevation are encoded by neurons throughout the auditory system, and auditory cortex is necessary for sound localization. However, the coordinate frame in which neurons represent sound space remains undefined: classical spatial receptive fields in head-fixed subj...
متن کاملRepresentations of pitch and slow modulation in auditory cortex
Iterated ripple noise (IRN) is a type of pitch-evoking stimulus that is commonly used in neuroimaging studies of pitch processing. When contrasted with a spectrally matched Gaussian noise, it is known to produce a consistent response in a region of auditory cortex that includes an area antero-lateral to the primary auditory fields (lateral Heschl's gyrus). The IRN-related response has often bee...
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ژورنال
عنوان ژورنال: Current Opinion in Neurobiology
سال: 2009
ISSN: 0959-4388
DOI: 10.1016/j.conb.2009.07.009