Modulation of early sensory processing in human auditory cortex during auditory selective attention
| Autor: | Marty G. Woldorff, S. Hampson, Steven A. Hillyard, Christopher C. Gallen, Christo Pantev, Floyd E. Bloom, David F. Sobel |
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| Rok vydání: | 1993 |
| Předmět: |
Auditory perception
Time Factors media_common.quotation_subject Auditory cortex Brain mapping Magnetics Perception medicine Humans Attention media_common Auditory Cortex Analysis of Variance Brain Mapping Multidisciplinary Auditory masking medicine.diagnostic_test Magnetoencephalography Magnetic Resonance Imaging Electrophysiology Acoustic Stimulation Auditory Perception Psychology Neuroscience Research Article Vigilance (psychology) |
| Zdroj: | Proceedings of the National Academy of Sciences. 90:8722-8726 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.90.18.8722 |
| Popis: | Neuromagnetic fields were recorded from human subjects as they listened selectively to sequences of rapidly presented tones in one ear while ignoring tones of a different pitch in the opposite ear. Tones in the attended ear evoked larger magnetic brain responses than did unattended tones in the latency ranges 20-50 msec and 80-130 msec poststimulus. Source localization techniques in conjunction with magnetic resonance imaging placed the neural generators of these early attention-sensitive brain responses in auditory cortex on the supratemporal plane. These data demonstrate that focused auditory attention in humans can selectively modulate sensory processing in auditory cortex beginning as early as 20 msec poststimulus, thereby providing strong evidence for an "early selection" mechanism of auditory attention that can regulate auditory input at or before the initial stages of cortical analysis. |
| Databáze: | OpenAIRE |
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