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首页> 外文期刊>International medical journal: IMJ >Right-Left-Discrimination: Cognitive Reaction Time and Aging
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Right-Left-Discrimination: Cognitive Reaction Time and Aging

机译：左右歧视：认知反应时间和衰老

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Objective: To study higher brain function with aging, cognition was studied qualitatively with the reaction time (RT) for right-left discrimination.Design: The cognition in right-left orientation was studied in a decision making task with RT.Materials and Methods: One hundred and eight volunteers, aged from 21 to 90 years, participated in this study (55 males and 53 females). They had no history of stroke, visual and auditory disorders. They got scores above 25 points with a questionnaire of the revised version of Hasegawa's Dementia Scale, and they showed no hemiparesis. They were asked to push a button quickly as they could at the same side as the cue presented in right-left discrimination, the cue was presented in 3 ways; 1) a sentence displaying on a TV-monitor, i. e., "Push the right button" or "Push the left button", 2) a white circle displaying on the monitor of black background at the right or left visual field, 3) click sounds (25, 40 or 60 decibel, Sound Pressure Level) generating from a headphone at the right or left ear.Results: The mean cognitive reaction time was 10.4 sec ± 4.42 for the sentence, 0.5 sec + 0.20 for the visual cues, and 0.6 sec + 0.47 for the auditory cues, respectively. The regression analysis showed the predictive equations; [RT]= 0.151 x [AGE] + 0.756 with the multiple coefficient of correlation of 0.25 for the sentence cue, [RT] = 0.005 x [AGE] + 0.115 with the multiple coefficient of correlation of 0.175 for the visual cues, and [RT] = 0.013 x [AGE] + 0.337 with the multiple coefficient of correlation of 0.189 for the auditory cues, respectively (Piason's test: P < 0.05).Conclusion: Right-left discrimination declined with aging. The cognitive responses to sentences had taken the longest time in right-left discrimination than those with visual or auditory cues. Right-left discrimination deteriorated with aging at the quickest pace for sentences than that for visual or auditory cues. Age-related decline for right-left orientation might be different from the right-left disorientation in Gerstmann's syndrome.
机译：目的：研究随着年龄增长而出现的更高的脑功能，定性地研究对左右歧视的反应时间（RT）的认知。设计：在RT的决策任务中研究左右取向的认知。材料和方法：一百一十八名年龄在21至90岁之间的志愿者参加了这项研究（男性55位，女性53位）。他们没有中风，视觉和听觉障碍的病史。他们使用长谷川痴呆量表的修订版问卷获得了25分以上的评分，并且他们没有偏瘫。他们被要求快速按下按钮，使其与出现左右歧视的提示在同一侧，提示以3种方式出现。 1）在电视显示器上显示的句子，即例如，“按向右按钮”或“按向左按钮”，2）在右或左视野的黑色背景的监视器上显示一个白色圆圈，3）单击声音（25、40或60分贝，声音）结果：句子的平均认知反应时间分别为10.4秒±4.42，视觉提示0.5秒+ 0.20和听觉提示0.6秒+ 0.47 。回归分析显示了预测方程。 [RT] = 0.151 x [AGE] + 0.756，句子提示的相关系数是0.25; [RT] = 0.005 x [AGE] + 0.115，视觉提示的相关系数是0.175，[ RT] = 0.013 x [AGE] + 0.337，听觉提示的多重相关系数分别为0.189（Piason检验：P <0.05）。结论：左右歧视随着年龄的增长而下降。与带有视觉或听觉提示的句子相比，对句子的认知反应在左右歧视中花费的时间最长。句子的左，右歧视随着年龄的增长而恶化，比视觉或听觉线索要快。年龄相关的左右方向下降与格斯特曼综合症中左右方向障碍可能有所不同。

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