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Characterizing sensory and cognitive factors of human speech processing through eye movements
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Abstract:
The primary goal of this thesis is to gain a better insight into any impediments in speech processing that occur due to sensory and cognitive factors. To achieve this, a new audio-visual paradigm based on the analysis of eye-movements is developed here which allows for an online analysis of the speech understanding process with possible applications in the field of audiology. The proposed paradigm is used to investigate the influence of background noise and linguistic complexity on the process of speech understanding. A reduction in processing speed is observed for more complex sentence structures, even at a high speech intelligibility level. The results indicate that noise affects sentence processing, whereas the speed of processing strongly depends on the noise type. In addition, a slowing down in sentence processing speed for listeners with hearing impairment indicated an extra effort in processing due to hearing loss. The methods and results will be useful both in basic research and in audiology.
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Keyword:
Physics
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URL: http://oops.uni-oldenburg.de/1889/1/wencha13.pdf
http://oops.uni-oldenburg.de/1889/
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