Mental effort required for walking: effects of retinitis pigmentosa.
Mental effort required for walking: effects of retinitis pigmentosa.
复制标题
步行所需的脑力劳动：色素性视网膜炎的影响。
DOI：
10.1097/00006324-199812000-00010
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
Stahl,JW
中科院分区：
文献类型：
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作者：
Turano,KA;Geruschat,DR;Stahl,JW
目的：确定视网膜色素变性(RP)是否增加行走所需的脑力。方法：研究方法。采用双任务方法，对13名RP患者和29名视力正常者进行步行速度和对随机声的反应时间(RT)的测定。RT的测量被用来估计行走所需的脑力。在第二个实验中，15名视力正常的受试者和15名视力正常的受试者分别选择了一条“简单”路线和一条“复杂”路线。结果：与视力正常的受试者相比，在走复杂路线而不是简单路线时，受试者的反应时间较长。在RP组中，以每个人的基线为标准，走复杂路线时的RT与对数对比敏感度(r=-0.63)和对数视网膜面积(r=-0.64)显著相关。行走所需的脑力劳动量也取决于对路线的熟悉程度。结论：路线的复杂性是决定行走是否比视力正常的人需要更多脑力劳动的关键。活动所需的脑力的大小与视力损害的测量是一致的，后者与RP的活动能力相关(Optom Vis Sci 1998；75：879-886)。
Purpose.To determine whether retinitis pigmentosa (RP) increases the mental effort required for walking. Methods. A dual-task methodology was used; walking speed and reaction time (RT) to randomly emitted tones were measured in 13 persons with RP and 29 persons with normal vision. Measures of RT were used to estimate the mental effort required for walking. In a second experiment, 15 persons with RP and 17 persons with normal vision navigated a “simple” and a “complex” route.Results.The RP subjects had longer RT compared with the normal-vision subjects when walking the complex but not the simple route. Normalized to each person's baseline, RT while walking the complex route was significantly correlated with log contrast sensitivity (r=—0.63) and log retinal area (r=—0.64) in the RP group. The amount of mental effort required for walking was shown to also depend on familiarity with the route.Conclusions.Route complexity is critical in determining whether walking requires more mental effort for persons with RP than for persons with normal vision. The magnitude of mental effort required for mobility covaries with the visual impairment measures which correlate with mobility performance in RP.(Optom Vis Sci 1998; 75: 879–886)