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Source analysis of short and long latency vestibular-evoked potentials (VsEPs) produced by left vs. right ear air-conducted 500 Hz tone pips.

Todd NP, Paillard AC, Kluk K, Whittle E, Colebatch JG - Hear. Res. (2014)

Bottom Line: Statistical analysis of the vestibular dependent responses indicated a contralateral effect for inion related short-latency responses and a left-ear/right-hemisphere advantage for the long-latency responses.In addition we found evidence of a possible vestibular contribution to the auditory T-complex in radial temporal lobe sources.These last results raise the possibility that acoustic activation of the otolith organs could potentially contribute to auditory processing.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Life Science, University of Manchester, Manchester M13 9PL, UK. Electronic address: neil.todd@manchester.ac.uk.

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Global field power vs. FCz and IO leads for left vs. right stimulation. Lobes 1,2 and 3 correspond to the short-latency VsEPs, lobe 4 to the N42 and lobes 5 to the N1. Lobe 6 includes contributions from the T100 (indicated as 6a) and P2 (indicated as 6b).
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fig7: Global field power vs. FCz and IO leads for left vs. right stimulation. Lobes 1,2 and 3 correspond to the short-latency VsEPs, lobe 4 to the N42 and lobes 5 to the N1. Lobe 6 includes contributions from the T100 (indicated as 6a) and P2 (indicated as 6b).

Mentions: Fig. 7 illustrates the structure of the global field power (GFP) for both left and right supra-threshold cases. Consistent with previous observations it was characterised by six lobes, three of short-latency, the first of which included effects of the N10/P10 and N15 measured in infra-ocular and posterior leads, and three of longer latency corresponding to the N42, N1 and P2 measured in central leads. The sixth lobe is quite broad with what appears to be early and late sub-components, which we label as lobes 6a and 6b. Source analysis was conducted over the whole epoch from 7 to 235 ms covering all six lobes. The temporal sources were modelled as a regional source for the fitting and then the components adjusted so that components 1 and 2 were tangential and component 3 radial (Näätänen and Picton, 1987; Scherg et al., 1989). For clarity the second tangential component is not included in the description.


Source analysis of short and long latency vestibular-evoked potentials (VsEPs) produced by left vs. right ear air-conducted 500 Hz tone pips.

Todd NP, Paillard AC, Kluk K, Whittle E, Colebatch JG - Hear. Res. (2014)

Global field power vs. FCz and IO leads for left vs. right stimulation. Lobes 1,2 and 3 correspond to the short-latency VsEPs, lobe 4 to the N42 and lobes 5 to the N1. Lobe 6 includes contributions from the T100 (indicated as 6a) and P2 (indicated as 6b).
© Copyright Policy - CC BY
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4017095&req=5

fig7: Global field power vs. FCz and IO leads for left vs. right stimulation. Lobes 1,2 and 3 correspond to the short-latency VsEPs, lobe 4 to the N42 and lobes 5 to the N1. Lobe 6 includes contributions from the T100 (indicated as 6a) and P2 (indicated as 6b).
Mentions: Fig. 7 illustrates the structure of the global field power (GFP) for both left and right supra-threshold cases. Consistent with previous observations it was characterised by six lobes, three of short-latency, the first of which included effects of the N10/P10 and N15 measured in infra-ocular and posterior leads, and three of longer latency corresponding to the N42, N1 and P2 measured in central leads. The sixth lobe is quite broad with what appears to be early and late sub-components, which we label as lobes 6a and 6b. Source analysis was conducted over the whole epoch from 7 to 235 ms covering all six lobes. The temporal sources were modelled as a regional source for the fitting and then the components adjusted so that components 1 and 2 were tangential and component 3 radial (Näätänen and Picton, 1987; Scherg et al., 1989). For clarity the second tangential component is not included in the description.

Bottom Line: Statistical analysis of the vestibular dependent responses indicated a contralateral effect for inion related short-latency responses and a left-ear/right-hemisphere advantage for the long-latency responses.In addition we found evidence of a possible vestibular contribution to the auditory T-complex in radial temporal lobe sources.These last results raise the possibility that acoustic activation of the otolith organs could potentially contribute to auditory processing.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Life Science, University of Manchester, Manchester M13 9PL, UK. Electronic address: neil.todd@manchester.ac.uk.

Show MeSH
Related in: MedlinePlus