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1989 Fiscal Year Final Research Report Summary

Functional organization in the monkey frontal eye field particularly in the deep region of the anterior arcuate bank

Research Project

Project/Area Number 63570046
Research Category

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

Allocation TypeSingle-year Grants
Research Field Neurophysiology and muscle physiology
Research InstitutionHirosaki University

Principal Investigator

SUZUKI Hisao  Hirosaki Univ. Sch. Med. Professor, 医学部, 教授 (00003351)

Co-Investigator(Kenkyū-buntansha) SAWAI Hajime  Hirosaki Univ. Sch. Med. Assistant, 医学部, 助手 (20202103)
KODAKA Yasushi  Hirosaki Univ. Sch. Med. Assistant, 医学部, 助手 (10205411)
AZUMA Masao  Hirosaki Univ. Sch. Med. Assistant Professor, 医学部, 助教授 (60003563)
Project Period (FY) 1988 – 1989
KeywordsFrontal eye field / Saccadic eye movements / Intracortical electrical microstimulation / Elgiloy microelectrode
Research Abstract

In a monkey, the cortical region rostral to the arcuate sulcus is called the frontal eye field (FEF), because saccadic eye movements are elicited by electrical stimulation. Purposes of this study are to reveal the exact extent of the FEF by exploring up to the bottom of the anterior arcuate bank, and to show the relationship between the stimulating site in the FEF and elicited saccade vector. Awake Japanese monkeys were sat in primate chairs with their heads tightly fixed. An Elgiloy microelectrode was inserted into the brain through the dura with a selected direction of the electrode, and intracortical electrical microstimulation was done with the electrode to elicite saccades. Results were as follows: 1. The FEF extended rostrocaudally from the caudal end of the principal sulcus to the bottom of the arcuate sulcus, with a mediolateral width of 7-10 mm. 2. When the stimulating site was moved along a radial cell array of the FEF, vector of the elicited saccade remained constant irrespective of the cortical layer of the stimulating site. However, the vector changed gradually with a shift of the stimulating sites along the cortical surface. The saccade amplitude was below 30゚ and its direction was contralateral to the stimulating FEF with varying degrees of the vertical component. 3. Amplitude of the saccade is increased gradually, when the stimulating site was moved from medial to lateral FEF. In contrast, saccade direction changed successively with a rostrocaudal shift of the stimulating site. Usually the same saccade direction was found twice or more in distant areas in the FEF. Based on the findings, we discussed the role of the FEF on saccadic eye movements of the animal.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Azuma,Masao: "Relation between visual input and motor outflow for eye movements in monkey frontal eye field." Behavioral Brain Research. 27. 93-98 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 東正夫: "サル前頭眼野の運動性出力の機能構成、" 日本生理誌. 50. 16 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木寿夫: "前頭眼野の局在構成" Equilibrium Research. 47. 48-50 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Azuma,Masao: "Topographic studies on electrically elicited saccades in the monkey frontal eye field." Journal of the Physiological Society of Japan. 50. 473 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Azuma,Masao: "Activities of monkey frontal eye field neuron on visually guided saccade." Neuroscience Research. 9. S92 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Suzuki,Hisao: "An analysis of the enhancement of the visual response of frontal eye field neurons in visually-guided saccadic eye movement." Japanese Journal of Physiology. 39. S140 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木寿夫: "「高次脳機能の生理学-新生理科学体系12-」" 医学書院, 383 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木寿夫: "総合機能、「標準生理学」(本郷・広重・熊田編)" 医学書院, 22 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Azuma, Masao: "Relation between visual input and motor outflow for eye movements in monkey frontal eye field" Behav. Brain Res., 27: 93-98, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Azuma, Masao: "Functional organization of the monkey frontal eye field" J. Physiol. Soc. Jap., 50: 16, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, Hisao: "Topographic organization of the frontal eye field" Equilibrium Res., 47: 48-50, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Azuma, Masao: "Topographic studies on electrically elicited saccades in the monkey frontal eye field" J. Physiol. Soc. Jap., 50: 473, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Azuma, Masao: "Activities of monkey frontal eye field neurons on visually guided saccades" Neurosci. Res. (Suppl.) 9: S92, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, Hisao: "An analysis of the enhancement of the visual response of frontal eye field neurons in visually-guided saccadic eye movements" Jap. J. Physiol. (Suppl.) 39: S140, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, Hisao: "Physiology of the higher cerebral function, In: New Physiological Science, Vol. 12" Igaku-Shoin, pp383, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, Hisao: "Integrative function, In: Textbook of Standard Physiology" Igaku-Shoin, pp22, 1989.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-26  

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