Three Dimensional Analysis of Various Types of Saccade

各类眼跳的三维分析

• 批准号: 10671582
• 负责人: NAKAMURA Tadashi
• 金额: $ 2.24万
• 依托单位: YAMAGATA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10671582/
• 关键词: Saccade; Three Dimension; Remembered; Antisaccade; Adduction and abduction; Upward and downward; Vertical; Oblique; 急速眼球運動; 眼球運動解析

The characteristics of various types of saccades, including visually guided saccade, antisaccade and remembered saccade, were investigated in 5 normal subjects. As the results, the visually guided saccades were the fastest, and the antisaccades were faster that the remembered saccades. Furthermore, in the remembered saccade, the relationships between the velocity and amplitude were more markedly scattered than those in the other saccades. The visually guided saccade was triggered by the visual input (external trigger), while the remembered saccade was triggered by the memory of the target position (internal trigger). The visually guided saccades moved toward the real target, while both anti- and remembered saccades moved toward the non-visually target. Consequently, the results in this study might be due to the differences in the trigger and the direction of the saccades.Horizontal, vertical and oblique saccades were recorded with search coil technique in normal 9 subjects and the characteristics of the saccades were investigated in different directions, i.e. 1) adduction and abduction, 2) upward and downward, 3) centric and eccentric, and 4) horizontal, vertical and oblique directions. The abducting saccades were faster than the abducting saccades at the amplitude of 10 deg, while the centric saccades were faster than the eccentric saccades at the amplitudes of 20 and 30 deg. Both the upward and centric saccades in vertical directions were faster than the others at all amplitudes. The peak velocity of horizontal component of oblique saccades was decreased according to an increase in the angle of the stimulus directions. On the other hand, the peak velocity of vertical component of oblique saccades had a tendency to be faster according to a decrease in the angle of the stimulus directions.Consequently, there were significant differences of the velocity of the saccades in the different directions.

对5名正常人的视觉引导性眼跳、反眼跳和记忆性眼跳的特征进行了研究。结果是，视觉引导的眼跳是最快的，反眼跳比记忆中的眼跳更快。此外，在记忆的眼跳中，速度和幅度之间的关系比其他眼跳中的更分散。视觉引导的眼跳是由视觉输入触发的(外部触发)，而记忆的眼跳是由目标位置的记忆触发的(内部触发)。视觉引导的眼跳向真实目标移动，而反视和记忆的眼跳则向非视觉目标移动。用搜索线圈技术记录了9名正常受试者的水平、垂直和斜向眼跳，研究了不同方向上的眼跳特征，即1)内收和外展，2)向上和向下，3)向心和偏心，4)水平、垂直和斜向。外展眼跳在10°波幅上快于外展眼跳，而中心性眼跳在20°和30°波幅上快于偏心眼跳。垂直方向的向上扫视和向心扫视在所有的幅度上都比其他方向的眼跳快。斜视水平成分的峰值速度随刺激方向角度的增大而降低。斜视垂直分量的峰值速度随刺激方向角的减小而增大，不同方向的眼跳速度存在显著差异。

项目成果

Hoduma Y, et al: "Acute Disseminated Encephalomyelitis (ADEM) with Sudden Hearing Loss - A Case Report."Equilibrium Research. 58(in press). (2000)

Hoduma Y 等人：“伴有突发性听力损失的急性播散性脑脊髓炎 (ADEM) - 病例报告。”平衡研究。

八月朔日泰和,中村 正,他: "強大音響暴露後に出現した方向交代上向性頭位眼振の一症例"Equilibrium Res. 58. 311-316 (1999)

Yasukazu Hatsugatsu、Tadashi Nakamura 等人：“暴露于强声音后出现的向上位置性眼球震颤的病例” Equilibrium Res 58. 311-316 (1999)