4.4 Article

A flexible research platform for multi-channel auditory steady-state response measurements

期刊

JOURNAL OF NEUROSCIENCE METHODS
卷 169, 期 1, 页码 239-248

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jneumeth.2007.12.002

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research platform; auditory; hearing threshold; multi-channel; ASSR; objective; EEG

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The possibilities of currently commercially available auditory steady-state response (ASSR) devices are mostly limited to avoid unintentional misuse and to guarantuee patient safety as such. Some setups, e.g. do not allow the application of high intensities or the use of own stimuli. Moreover, most devices generally only allow data collection using maximal two EEG channels. The freedom to modify and extend the accompagnying software and hardware is very restricted or inexistent. As a result, these devices are not suited for research and several clinically diagnostic purposes. In this paper, a research platform for multi-channel ASSR measurements is presented, referred to as SOMA (setup ORL for multi-channel ASSR). The setup allows multi-channel measurements and the use of own stimuli. It can be easily extended to facilitate new measurement protocols and real-time signal processing. The mobile setup is based on an inexpensive multi-channel RME soundcard and software is written in C++. Both hardware and software of the setup are described. An evaluation study with nine normal-hearing subjects shows no significant performance differences between a reference and the proposed platform. SOMA presents a flexible and modularly extensible mobile high-end multi-channel ASSR test platform. (c) 2007 Elsevier B.V. All rights reserved.

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