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http://hdl.handle.net/1903/6120
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| Title: | Robust Spectro-Temporal Reverse Correlation for the Auditory System: Optimizing Stimulus Design |
| Authors: | Klein, David J.
Depireux, Didier A.
Simon, J.Z.
Shamma, S.A. |
| Department/Program: | ISR
CAAR |
| Type: | Technical Report |
| Keywords: | neural systems, auditory cortex, receptive field, spectro-temporal, |
| Issue Date: | 1999 |
| Series/Report no.: | ISR; TR 1999-60
CAAR; TR 1999-1 |
| Abstract: | The spectro-temporal receptive field (STRF) is a functionaldescriptor of the linear processing of time-varying acoustic spectra by theauditory system. By cross-correlating sustained neuronal activity with the"dynamic spectrum" of a spectro-temporally rich stimulus ensemble, oneobtains an estimate of the STRF. <p>In this paper, the relationship betweenthe spectro-temporal structure of any given stimulus and the quality ofthe STRF estimate is explored and exploited. Invoking the Fouriertheorem, arbitrary dynamic spectra are described as sums of basicsinusoidal components, i.e., "moving ripples." Accurate estimation isfound to be especially reliant on the prominence of components whosespectral and temporal characteristics are of relevance to the auditorylocus under study, and is sensitive to the phase relationships betweencomponents with identical temporal signatures.<p>These and otherobservations have guided the development and use of stimuli withdeterministic dynamic spectra composed of... |
| URI: | http://hdl.handle.net/1903/6120 |
| Appears in Collections: | Institute for Systems Research Technical Reports
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| TR_99-60.pdf | | 1275Kb | Adobe PDF | 52 | View/Open |
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