Early non-visual experience influences proprioceptive-spatial discrimination acuity in adulthood
Early non-visual experience influences proprioceptive-spatial discrimination acuity in adulthood
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DOI：
10.1016/j.neuropsychologia.2008.12.023
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发表时间：
2009-02-01
期刊：
影响因子：
2.6
通讯作者：
Roesler, Frank
中科院分区：
文献类型：
--
作者：
Fiehler, Katja;Reuschel, Johanna;Roesler, Frank
本研究探讨了非视觉空间经验是否影响空间知觉的后期敏锐度。先天性失明的成年人谁在不同的年龄获得的空间知识，通过方向和流动性（O&M）的培训和匹配的视力控制进行被动的手臂运动和判断的方向感运动。在两种空间编码条件下，通过自适应心理物理程序评估本体感觉空间辨别敏锐度。在自我中心的编码条件下，参与者判断手的轨迹是否感觉左或右倾斜的参考直线轨迹对齐的横向水平平面的身体中线轴。在非中心编码条件下，他们指出了手的轨迹是否感觉到与直角成锐角或钝角。先天性失明的参与者的本体感觉空间敏锐度显着协变与他们参加了O&M培训的年龄。先天失明的参与者越早开始O&M训练，他们的空间感知就越准确。先天性失明的参与者在12岁后接受了O&M训练，其视力比正常对照组差。先天性失明的参与者与早期的O&M培训，但是，接近有视力的控制的性能水平。观察到的改善空间敏锐度是更明显的判断时，给出了一个allocentric比自我中心的参考框架的基础上。这些发现表明，成年人的本体感觉空间敏锐度取决于早期发展过程中的非视觉空间经验。(C)2009爱思唯尔有限公司保留所有权利。
The present study tested whether non-visual spatial experience affects later acuity of space perception. Congenitally blind adults who differed in the age acquired spatial knowledge via an orientation and mobility (O&M) training and matched sighted controls performed passive arm movements and judged the direction of the sensed movement. Proprioceptive-spatial discrimination acuity was assessed by an adaptive psychophysical procedure in two spatial coding conditions. In the egocentric coding condition, participants judged whether the hand trajectory felt left- or right-tilted in reference to a straight trajectory aligned to the transverse horizontal plane of the body midline axis. In the allocentric coding condition, they indicated whether the hand trajectory felt acute- or obtuse-angled in reference to a right angle. Proprioceptive-spatial acuity of congenitally blind participants significantly covaried with the age they attended an O&M training. The earlier the congenitally blind participants started the O&M training the more accurate was their space perception. Congenitally blind participants who underwent an O&M training after the age of 12 years showed poorer acuity than sighted controls. Congenitally blind participants with an earlier O&M training, however, approached the performance level of the sighted controls. The observed improvement in spatial acuity was more pronounced when judgements were given on the basis of an allocentric than an egocentric frame of reference. These findings suggest that proprioceptive-spatial acuity in adulthood depends on non-visual spatial experience during early development. (C) 2009 Elsevier Ltd. All rights reserved.