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Role of the cerebellar floccular region in generation of three dimensional pursuit eye movements - Comparison with frontal eye field signals -

Role of the cerebellar floccular region in generation of three dimensional pursuit eye movements - Comparison with frontal eye field signals -
小脑絮状区域在三维追踪眼球运动生成中的作用 - 与额叶眼场信号的比较 -
批准号:
16300128
负责人:
FUKUSHIMA Kikuro
金额:
$9.66万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2004
资助国家:
日本
项目状态:
已结题
起止时间:
2004 至 2005

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中文摘要
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英文摘要
Frontal-eyed primates use both smooth-pursuit in frontal planes (frontal-pursuit) and pursuit-in-depth (vergence-pursuit) to track objects of interest moving slowly in three-dimensional (3D) space. The cerebellar floccular region is well known to play a crucial role in initiation and maintenance of frontal-pursuit and control of the vestibulo-ocular reflex (VOR). By assigning monkeys to pursue a spot moving in 3D space, I examined whether pursuit Purkinje (P) cells in the floccular region have vergence sensitivity and how they are involved in vergence-pursuit. Of 112 pursuit P cells examined for both frontal and vergence-pursuit, the majority (63%) discharged for both, 24% discharged only for vergence-pursuit and 13% discharged only for frontal-pursuit. The majority of (58%) of vergence-related P cells had velocity sensitivity, thus they carry 3D-pursuit signals. 72% also had vergence-position sensitivity. In contrast, pursuit P cells that discharged specifically for frontal-pursuit ar … More e in the minority in the floccular region. 80% of 3D-pursuit P cells discharged after the onset of vergence-pursuit with the average lag of 56 ms. I also examined activity of floccular P cells during fore/aft translation to test whether they carry gaze-velocity signals. The majority of P cells (17/22=77%) did not respond to fore/aft translation when monkeys were required to fixate a target that moved with them in order to maintain the vergence angle during translation. However, most (13/22=59%) responded if the monkeys were required compensatory vergence eye movements. Actual responses during the latter condition were well predicted by their eye velocity sensitivity during vergence-pursuit. These results suggest the involvement of the floccular region in 3D-pursuit rather than gaze (eye-in-space) control. Pursuit signals in the floccular region could provide internal feedback signals for pursuit gain control. Vergence eye position-related P cell activity could also provide the viewing distance information for appropriate control of the VOR. Less
期刊论文(13)
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会议论文
Adaptive changes in vergence eye movements induced by vergence-vestibular interaction training in monkeys.
猴子的聚散-前庭交互训练引起的聚散眼球运动的适应性变化。
DOI: --
发表时间: 2004
期刊: Exp.Brain Res. 156
影响因子: --
作者: [Sato, F.]
通讯作者: F.
DOI: 10.1007/s00221-004-2213-6
发表时间: 2005-07-01
期刊: EXPERIMENTAL BRAIN RESEARCH
影响因子: 2
作者: [Akao, T, Kurkin, SA, Fukushima, K]
通讯作者: Fukushima, K
DOI: 10.1016/j.braindev.2005.03.005
发表时间: 2005-12-01
期刊: BRAIN & DEVELOPMENT
影响因子: 1.7
作者: [Fukushima, J, Tanaka, S, Fukushima, K]
通讯作者: Fukushima, K
DOI: 10.1152/jn.01028.2004
发表时间: 2005-05-01
期刊: JOURNAL OF NEUROPHYSIOLOGY
影响因子: 2.5
作者: [Akao, T, Mustari, MJ, Fukushima, K]
通讯作者: Fukushima, K
9
    Role of cerebellar dorsal vermis in generation of pursuit eye movements in three dimensional space
    • 批准号:
      18300130
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $10.6万
    • 财政年份:
      2006
    • 负责人:
      FUKUSHIMA Kikuro
    • 依托单位:
    Neuronal correlates for ocular pursuit : representation of target velocity and eye- and head-movement signals.
    • 批准号:
      17022001
    • 项目类别:
      Grant-in-Aid for Scientific Research on Priority Areas
    • 资助金额:
      $56.9万
    • 财政年份:
      2005
    • 负责人:
      FUKUSHIMA Kikuro
    • 依托单位:
    Roles of caudal frontal eye fields (FEF) in representation of visual information in space : Comparison with MT/MST.
    • 批准号:
      12480244
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $9.34万
    • 财政年份:
      2000
    • 负责人:
      FUKUSHIMA Kikuro
    • 依托单位:
    Role of the cerebellar floccular lobe and vermis in vertical smooth pursuit eye movement
    • 批准号:
      09680806
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.37万
    • 财政年份:
      1997
    • 负责人:
      FUKUSHIMA Kikuro
    • 依托单位:
    海外基金