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Classification of prefrontal activity due to mental arithmetic and music imagery using hidden Markov models and frequency domain near-infrared spectroscopy

, : Classification of prefrontal activity due to mental arithmetic and music imagery using hidden Markov models and frequency domain near-infrared spectroscopy. Journal of Neural Engineering 7(2): 26002-26002

Near-infrared spectroscopy (NIRS) has recently been investigated as a non-invasive brain-computer interface (BCI). In particular, previous research has shown that NIRS signals recorded from the motor cortex during left- and right-hand imagery can be distinguished, providing a basis for a two-choice NIRS-BCI. In this study, we investigated the feasibility of an alternative two-choice NIRS-BCI paradigm based on the classification of prefrontal activity due to two cognitive tasks, specifically mental arithmetic and music imagery. Deploying a dual-wavelength frequency domain near-infrared spectrometer, we interrogated nine sites around the frontopolar locations (International 10-20 System) while ten able-bodied adults performed mental arithmetic and music imagery within a synchronous shape-matching paradigm. With the 18 filtered AC signals, we created task- and subject-specific maximum likelihood classifiers using hidden Markov models. Mental arithmetic and music imagery were classified with an average accuracy of 77.2% +/- 7.0 across participants, with all participants significantly exceeding chance accuracies. The results suggest the potential of a two-choice NIRS-BCI based on cognitive rather than motor tasks.


PMID: 20168001

DOI: 10.1088/1741-2560/7/2/026002

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Friis, M.; Qvortrup, K., 2008: Functional blood flow patterns of the endolymphatic sac in the rat. Visualization of the endolymphatic sac vascular network under video fluorescence microscopy showed a typical microvascular organization. The microvascular arrangement and the microcirculation may reflect a functional state of the endolymphatic sac...

del Bueno, D., 1976: What employees can do: the educator's responsibility. Cross-Reference 7(1): 4-5

Yu-Guang Ye; Hong-D.L.ang;; Ren-Hou Wang; Chun-Shan Dai; Jun-Cheng Gao, 1998: Concentration of oxygen vacancies in quartz from sediments; potential for geochronometry. The concentration of oxygen vacancies in 13 quartz samples from Lower Tertiary sandstones (24–42 Ma) of the Liaohe Basin were measured by ESR. It was found that the concentration of oxygen vacancies in quartz is correlated to the total...

Dolwani, S.; Williams, G.T.; West, K.P.; Newman, J.; Stock, D.; Griffiths, A.P.; Best, J.; Cheadle, J.P.; Sampson, J.R., 2007: Analysis of inherited MYH/(MutYH) mutations in British Asian patients with colorectal cancer. The main goal of treatment for Crohn's disease and ulcerative colitis has always been the induction and maintenance of symptomatic improvement or at best remission. It has been shown by many studies that the long-term outcome of these disease...

Schmidt, HJ.; Gortz, H-D., 1987: Killer particles in the macronucleus of Paramecium caudatum. Annals of the New York Academy of Sciences, 503: 580-583

Rossmaessler, S., 1896: Iconographie der Europaischen Land-und Suiss wasser-Mollusken. Fortgesetzt von Dr. W. Eobelt. Neue Folge Band, VII 57-104

Fujita, S.; Masago, K.; Takeshita, J.; Togashi, Y.; Hata, A.; Kaji, R.; Kokubo, M.; Katakami, N., 2015: Multiple primary malignancies in patients with non-small cell lung cancer. Information regarding multiple primary malignancies is important, as it has the potential to clarify etiological factors and may indicate the need to refine patient follow-up to include screening for associated malignancies. Upper aerodigestive tr...

Anonymous, 1974: Two hundred and Sixty-sixth Scientific Meeting of the Nutrition Society, Aberdeen, 1974, abstracts of communications. Proceedings of the Nutrition Society: 33 (3) 1A-116A

Luo Xiaobin, 1999: A typomorphic ore deposit, typomorphic formation, and their significance. The concept of typomorphic ore deposits and typomorphic formation are used as the definition of an ore deposit. They are indicators for prospecting for some types of ore deposits. The characteristics of typomorphic ore deposits and typomorphic for...

Gonzalez, M.; Larramendy, R.; Garcia, C., 1986: Production of an antigen of Aspergillus fumigatus for serology. Crude antigens from 3 A. fumigatus strs. were prepared, using somatic and metabolic extracts and a combination of the two. Eight rabbits were immunized with these products and the sera titred by double immunodiffusion on challenging with the antig...