Fast CAPs threshold and tuning curves based on a sound card detection system

GONG Qin; ZHANG Shuoyue

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Journal of Tsinghua University(Science and Technology) ›› 2015, Vol. 55 ›› Issue (9) : 1036-1044.

BIOLOGICAL SCIENCE AND ENGINEERING

Fast CAPs threshold and tuning curves based on a sound card detection system

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Abstract

Auditory nerve compound action potentials (CAPs) threshold curves reflect the hearing sensitivity to intensity variations while its tuning curves reflect the sensitivity to frequency variations in the auditory nerve system. A fast CAPs threshold and tuning curve detection algorithm were developed based on an external multimedia sound card with C# to simplify the data extraction for studies of the auditory nerve system with more objective and more accurate information in a shorter time. The factors influencing the fast CAPs tuning curves such as the orientation of the sweeping frequency and the frequency of the stimulus were analyzed using guinea pig experiments. The fast CAPs threshold and tuning curves compare well with previous results. The factors contributing to fast CAPs tuning curve accuracy include reduction of the needed criteria and the rates of change for the masker intensity. This system is a fast, objective, and comprehensive analysis platform which will be valuable for further research on auditory nerve compound action potentials.

Key words

compound action potentials (CAPs) / threshold curves / tuning curves / fast method

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GONG Qin, ZHANG Shuoyue. Fast CAPs threshold and tuning curves based on a sound card detection system[J]. Journal of Tsinghua University(Science and Technology). 2015, 55(9): 1036-1044

References

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