Influence of moving sight by turning over frequency

Shinya Ishihara, Keisuke Sawada, Takayuki Kinoshita, Tomohiro Ishida, Keiko Momose, Masato Maeno, Kenji Yanasihma, Kazushige Magatani

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In late years, f-MRI (functional Magnetic Resonance Imaging) are used for analysis of a visual function. In case of the study for a visual function, the checker flag pattern consists of white square and black square is usually used for sight stimulation. In sight stimulation using this pattern, a color of square (black and white) changes alternately at constant frequency. It is usually called pattern reversal stimulation. When this pattern is used for stimulation, the subject sometimes feels movement for the shown stimulation pattern. We think that this sensation of movement relates to spatial frequency (that means the size of a square of a stimulation pattern) of a stimulation image and a turning over frequency of a stimulation pattern strongly. Our objectives of this study are the following. 1) Clarify a part of the brain that is a cause of this moving sensation. 2) Investigate the relationship among the magnitude of this sensation, spatial frequency and turning over frequency. Three normal adults were used for the subject. This time, turning over frequency was changed from 0Hz to 8 Hz by 1Hz step under fixed spatial frequency. Under this condition, we examined the state of activation of a V1 area. In addition, we examined whether BOLD effect varied with a change of a stimulation color. In this experiment, we used blue and yellow color instead of black and white for stimulation, and the reaction was examined.

    Original languageEnglish
    Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
    Pages1920-1923
    Number of pages4
    DOIs
    Publication statusPublished - 2006
    Event28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06 - New York, NY
    Duration: 2006 Aug 302006 Sep 3

    Other

    Other28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
    CityNew York, NY
    Period06/8/3006/9/3

    Fingerprint

    Color
    Brain
    Chemical activation
    Experiments
    hydroquinone
    Magnetic Resonance Imaging

    Keywords

    • FMRI visual cortex color V1 field MT field

    ASJC Scopus subject areas

    • Bioengineering

    Cite this

    Ishihara, S., Sawada, K., Kinoshita, T., Ishida, T., Momose, K., Maeno, M., ... Magatani, K. (2006). Influence of moving sight by turning over frequency. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (pp. 1920-1923). [4029257] https://doi.org/10.1109/IEMBS.2006.260013

    Influence of moving sight by turning over frequency. / Ishihara, Shinya; Sawada, Keisuke; Kinoshita, Takayuki; Ishida, Tomohiro; Momose, Keiko; Maeno, Masato; Yanasihma, Kenji; Magatani, Kazushige.

    Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 2006. p. 1920-1923 4029257.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Ishihara, S, Sawada, K, Kinoshita, T, Ishida, T, Momose, K, Maeno, M, Yanasihma, K & Magatani, K 2006, Influence of moving sight by turning over frequency. in Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings., 4029257, pp. 1920-1923, 28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06, New York, NY, 06/8/30. https://doi.org/10.1109/IEMBS.2006.260013
    Ishihara S, Sawada K, Kinoshita T, Ishida T, Momose K, Maeno M et al. Influence of moving sight by turning over frequency. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 2006. p. 1920-1923. 4029257 https://doi.org/10.1109/IEMBS.2006.260013
    Ishihara, Shinya ; Sawada, Keisuke ; Kinoshita, Takayuki ; Ishida, Tomohiro ; Momose, Keiko ; Maeno, Masato ; Yanasihma, Kenji ; Magatani, Kazushige. / Influence of moving sight by turning over frequency. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 2006. pp. 1920-1923
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