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Neural Mechanisms Controlling Velocity and Position Guided Orienting

Research Project

Project/Area Number 13680905
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 神経・脳内生理学
Research InstitutionTokyo Metropolitan Organization for Medical Research

Principal Investigator

SASAKI Shigeto  Tokyo Metropolitan Institute for Neuroscience, Staff Scientist, 東京都神経科学総合研究所, 参事研究員 (50110490)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsOrienting / Velocity guided / Position guided / Cats / Superior colliculus / Pons and Medulla / Reticulospinal neurons
Research Abstract

Cats were trained to look at a light spot and then to orient to the light spot which jumped to or moved in a ramp-hold manner to a new target from the fixation point. The two stimulus evoked position guided and velocity guided orienting, respectively, since the former use positional and the latter velocity information of the light spot.
1. Velocity guided orienting is characterized by short latency (50-80ms) and large velocity (500°/s). Optimal visual stimulus velocity is 300-600°/s and their latencies, velocities and amplitudes decreased with other stimulus velocities.
2. Position guided orienting is characterized by long latencies (150 -300 ms) and slower velocities of about half of the velocity guided orienting.
3. Neurons in the superior colliculus activated with latencies of about 30 ms from onset of the visual stimulus and lasted during stimulus. Firing frequencies were maximal with the same optimal velocities for orienting.
4. Two major types of neurons in the pontomedullary reticular formation were observed. One type activated only with moving stimulus, with latencies of about 40 ms and active up to middle of head movement in time. The other is activated during head movements irrespective of stimulus types. The differenced were well explained by these neural activities.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Sasaki S: "The neural control of Orienting : Role of multiple-branching reticulospina neurons"Prog Brain Res.. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Isa T: "Brainstem control of head movements during orienting : Organization of the premotor circuits"Prog in Neruobiology. 66. 205-241 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yoshimura K: "Velocity guided and velocity facilitated orienting in unrestrained cats"Jpn.J.Physiol.. Vol 51. S225 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sasaki S: "Neural control mechanisms of velocity guided orienting in cats"Jpn.J.Physiol.. Vol 52. Suppl S159 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yoshimura K: "Subtypes of visually guided orienting in unrestrained cats"Jpn.J.Physiol.. Vol 50. Suppl S156 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sasaki S: "Velocity and position guided orienting in unrestrained cats"Neurosci.Res.. Suppl 24. S33 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sasaki S: "The neural control of Orienting: Role of multiple-branching reticulospinal neurons"Prog Brain Res.. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Isa T and Sasaki S: "Brainstem control of head movements during orienting; Organization of the premotor circuits"Prog in Neurobiology. 205-241 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yoshimura K, Naito K, Takeuchi H-A, Sasaki S: "Velocity guided and velocity facilitated orienting in unrestrained cats"Jpn. J. Physiol. Vol 51, Suppl. S225 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sasaki S, Yoshimura K, Naito K, Takeuch H-A: "Neural control mechanisms of velocity guided orienting in cats"Jpn. J. Physiol. Vol 52, Suppl. S159 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yoshimura K, Naito K, Takeuchi H-A, Sasaki S: "Subtypes of visually guided orienting in unrestrained cats"Jpn. J. Physiol. Vol 50, Suppl. S156 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sasaki S, Yoshimura K, Naito K, Takeuch H-A: "Velocity and position guided orienting in unrestrained cats"Neurosci. Res.. Suppl 24. S33 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sasaki S: "The neuronal control of orienting: Role of multiple-branching reticulospinal neurons"Prog. Brain Res.. (In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Isa T, Sasaki: "Brain stem control of head movements during orienting : Organization of nremotor circuits"Prog. in Neurobiology. 66. 205-241 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yoshimura K et al.: "Velocity guided and velocity facilitated orienting in unrestrained cats"Jap. J. Physiol.. 51. S225 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Sasaki S et al.: "Neuronal control mechanisms of velocity guided orienting"Jap. J. Physiol.. 52. S159 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yoshimura K et al.: "Subtypes of visually guided orienting in unrestrained cats"Jap. J. Physiol.. 50. S156 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Sasaki S et al.: "Velocity and position guided orienting in unrestrained cats"Neurosci. Res.. S24. S33 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yoshimura K: "Velocity guided and velocity facilitated orienting in unrestrained cats"Jpn J. Physiol. 51 Suppl. S225 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Isa T: "Brainstem control of head movement in orienting: Organization of the premotor circuits"Prog. Neurobil.

    • Related Report
      2001 Annual Research Report
  • [Publications] Sasaki S: "The neural control of orienting : Role of multiple-branching branching of reticulospinal neurons"Progress in Brain Research.

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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