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dc.contributor.authorPaolini, AG
dc.contributor.authorFitzGerald, JV
dc.contributor.authorBurkitt, AN
dc.contributor.authorClark, GM
dc.identifierpii: S0378595501003276
dc.identifier.citationPaolini, A. G., FitzGerald, J. V., Burkitt, A. N. & Clark, G. M. (2001). Temporal processing from the auditory nerve to the medial nucleus of the trapezoid body in the rat. HEARING RESEARCH, 159 (1-2), pp.101-116.
dc.descriptionPublisher’s permission requested and denied.
dc.description.abstractThis investigation examines temporal processing through successive sites in the rat auditory pathway: auditory nerve (AN), anteroventral cochlear nucleus (AVCN) and the medial nucleus of the trapezoid body (MNTB). The degree of phase-locking, measured as vector strength, varied with intensity relative to the cell's threshold, and saturated at a value that depended upon stimulus frequency. A typical pattern showed decline in the saturated vector strength from approximately 0.8 at 400 Hz to about 0.3 at 2000 Hz, with similar profiles in units with a range of characteristic frequencies (480-32,000 Hz). A new expression for temporal dispersion indicates that this variation corresponds to a limiting degree of temporal imprecision, which is relatively consistent between different cells. From AN to AVCN, an increase in vector strength was seen for frequencies below 1000 Hz. At higher frequencies, a decrease in vector strength was observed. From AVCN to MNTB a tendency for temporal coding to be improved below 800 Hz and degraded further above 1500 Hz was seen. This change in temporal processing ability could be attributed to units classified as primary-like with notch (PL(N)). PL(N) MNTB units showed a similar vector strength distribution to PL(N) AVCN units. Our results suggest that AVCN PL(N) units, representing globular bushy cells, are specialised for enhancing the temporal code at low frequencies and relaying this information to principal cells of the MNTB.
dc.relation.ispartofScientific publications, vol.12, 2000-2001, no.1244
dc.subjectauditory nerve
dc.subjectcochlear nucleus
dc.subjectmedial nucleus of the trapezoid body
dc.subjecttemporal processing
dc.titleTemporal processing from the auditory nerve to the medial nucleus of the trapezoid body in the rat
dc.typeJournal Article
melbourne.source.titleHearing Research
melbourne.contributor.authorPaolini, Antonio
melbourne.contributor.authorBurkitt, Anthony
melbourne.contributor.authorClark, Graeme
melbourne.contributor.authorFITZGERALD, JOHN VINCENT
melbourne.accessrightsThis item is currently not available from this repository

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