| Abstract No.: | 116 |
| Country: | Canada |
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| Title: | INVESTIGATING THE BASIC FUNCTIONAL ORGANIZATION OF THE HUMAN AUDITORY CORTEX WITH FMRI |
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| Authors/Affiliations: | 1 Marc Schonwiesner*;
1 Montreal Neurological Institute, QC, Canada
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| Content: | FMRI has greatly facilitated our understanding of the functional specialisations of human auditory cortical areas. The spatial resolution and sensitivity of fMRI has reached a level where it may become possible to reveal how auditory information is represented within these functionally specialised auditory areas, and where this information can be used to distinguish between coding mechanisms suggested by neurophysiological studies in animal models. I will present studies that use high-resolution FMRI to investigate the cortical representation of four complementary sound features: frequency, complex pitch, sound direction, and spectrotemporal modulation rates. For each sound feature we analyzed the responses in single voxels of the auditory cortex by computing tuning curves, modulation spectra, and other descriptors that are usually used in single cell studies. I hope to demonstrate how we can use each of the results to relate the organization of the human auditory cortex directly to the results obtained from animal neurophysiology. |
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