Conference proceeding
Single trial hemodynamic response estimation in a block anagram solution study using fNIR spectroscopy: SPEECH PROCESSING
2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5, pp.633-636
International Conference on Acoustics Speech and Signal Processing ICASSP
01 Jan 2005
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Near infrared spectroscopy (NIRs) has shown great potential in examining functional brain activity during cognitive tasks by enabling the measurement of changes in the concentration of deoxygenated and oxygenated hemoglobin. It attracted great interest due to its portability, low cost, safety and non-invasiveness. In this paper, we present a novel single trial hemodynamic response estimation algorithm in an anagram solution study using functional NIRs (fNIRs). The temporal profile of the hemodynamic response to each single trial stimulus is estimated by minimizing the error between the oxygenation data measured by fNIRs and a linear model. In this technique no prior assumption on the amplitude, latency, or variance of the hemodynamic response is required other than its shape to be a gamma function. Once the estimates of single trial hemodynamic responses gathered from the dorsolateral prefrontal cortex are obtained, the features such as maximum amplitude, rise time, etc. are extracted and compared for different difficulty levels of the test.
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Details
- Title
- Single trial hemodynamic response estimation in a block anagram solution study using fNIR spectroscopy
- Creators
- M IzzetogluS NiokaB ChanceB OnaralIEEE
- Publication Details
- 2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5, pp.633-636
- Series
- International Conference on Acoustics Speech and Signal Processing ICASSP
- Publisher
- IEEE
- Number of pages
- 4
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Identifiers
- 991019170493204721
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