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Studies of pattern information processing in man by electroencephalography and visual evoked potentials.

Research Project

Project/Area Number 60510041
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Psychology
Research InstitutionUniversity of Iwate

Principal Investigator

MOROTOMI Takashi  University of Iwate, Prof., 教育学部, 教授 (60003951)

Co-Investigator(Kenkyū-buntansha) 昆 保典  専修大学北上保育専門学校, 講師
JIN Tsuneo  University of Iwate, Lectur., 教育学部, 講師 (30113856)
SUGAWARA Masakazu  University of Iwate, Ass. Prof., 教育学部, 助教授 (70111234)
KON Yasunori  Kitagami nursery school, University of Sensyu, Lectur.
Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1986: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1985: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsPattern-information processing / Pattern evoked potentials / Spatial frequency tunig curve / Contour / Depth perception
Research Abstract

Main findings of studies supported by Grant-in-Aid for Scientific Research are as follows.
1. Pattern related potentials consisted of three components: C1, C2 and C3 with peak latencies of 65-90 msec, 100-120 msec and 130-150 msec.
2. The scalp surface distributions of three components were affected by the retinal locations of the pattern stimuli. These results suggest that the cortical origins of the three components anatomically differ.
3. C1 was independent of the pattern contours, but C2 was influenced significantly by them. These results suggest that C2 reflects the activity of the contour specific process in visual systems.
4. The spatial frequency tuning curve of the pattern related potentials appeared to vary in the retinal locations and its components. Both N165 and P235 induced by the left and right half field stimulation did not show the spatial frequency tuning curve. These results suggest that N165 and P235 are irrelevant the pattern related components.
5. Visual evoked potentials( VEPs) to random patterns depth perception differed from the ordinary pattern VEPs in that morphology. It seems that a serial synthesis of VEPs to pattern stimuli input and VEPs to the depth perception occurs.
6. The space perception of the child develops after three years and comes to the plateau in seven to eight years. But the phenomena of the regression of development occurs temporally in that process.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 諸冨隆,昆保典: 脳波と筋電図. 15. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 諸冨隆: 生理心理学と精神生理学. 5. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 諸冨隆: 脳波と筋電図. 16. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Morotomi and Masakazu Sugawara: "Spatial frequency responding properties of VEPs induced by upper, lower,left and right half field stimulation." Japanese Journal of Electroencephalography and Electromyography. 14. (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Morotomi: "Pattern onset, offset, and reversal VEPs induced by upper, lower, left and right field stimulation" Journal of Clinical Electroencephalography. 28. 171-181 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Morotomi and Yasunori Kon: "Visual evoked potentials to pattern reversal stimuli with subjective contours." Japanese Journal of Electroencephalography and Electromyography. 15. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Morotomi: "Depth perception and visual evoked potentials I." Japanese Journal of Physiological Psychology and Psychophysiology. 5. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Morotomi: "Depth perception and visual evoked potentials II." Japanese Journal of Electroencephalography and Electromyography. 16. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-31   Modified: 2016-04-21  

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