Seeing 'where' through the ears: effects of learning-by-doing and long-term sensory deprivation on localization based on image-to-sound substitution.
Seeing 'where' through the ears: effects of learning-by-doing and long-term sensory deprivation on localization based on image-to-sound substitution.
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DOI：
10.1371/journal.pone.0001840
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发表时间：
2008-03-26
期刊：
影响因子：
3.7
通讯作者：
Knoll I
中科院分区：
文献类型：
--
作者：
Proulx MJ;Stoerig P;Ludowig E;Knoll I
盲人的感觉替代装置将无法接触到的视觉信息转化为完整的感觉通路可以处理的格式。在这里，我们测试了13名蒙眼参与者基于图像到声音转换的视觉刺激(LED和物体)的定位。作为两个变量的函数，受试者被分配到不同的角色：视觉剥夺(蒙眼连续21天，每天24小时；蒙眼只用于测试(BT))和系统使用(系统未使用(SN)；仅用于测试(ST)；系统连续使用21天(SC))。通过比较8名只在测试中使用移动替代设备的受试者(BtST)和另外3名在日常生活中每天使用该设备练习4小时的受试者(BTSC和BCSC)的成绩来评估边做边学的效果；两名根本不使用该设备的受试者(BtSN和BcSN)允许评估其在我们所使用的任务中的使用情况。在为期三周的实验中，通过蒙住其中三名参与者(BcSnn、BcSnc和Bcsc)的眼睛来调查长期感觉剥夺的影响；另外十名受试者在测试过程中只蒙住眼睛(BtSn、Btsc和八名BtSt受试者)。意想不到的是，从未使用过替代设备的两名受试者，虽然找到目标的速度很快，但机会准确率很高，而使用该设备的受试者速度明显较慢，但准确率要高得多，这在我们的四次测试中都有显著提高。每天和测试期间自由使用该设备的三名受试者比那些只在测试中使用该设备的受试者更快、更准确；然而，长期蒙眼并不会显著影响表现。总而言之，结果表明，该设备允许蒙眼的受试者通过倾听越来越多地知道什么东西在哪里，并表明在自然条件下的练习有效地提高了“视觉”定位性能。
Sensory substitution devices for the blind translate inaccessible visual information into a format that intact sensory pathways can process. We here tested image-to-sound conversion-based localization of visual stimuli (LEDs and objects) in 13 blindfolded participants. Subjects were assigned to different roles as a function of two variables: visual deprivation (blindfolded continuously (Bc) for 24 hours per day for 21 days; blindfolded for the tests only (Bt)) and system use (system not used (Sn); system used for tests only (St); system used continuously for 21 days (Sc)). The effect of learning-by-doing was assessed by comparing the performance of eight subjects (BtSt) who only used the mobile substitution device for the tests, to that of three subjects who, in addition, practiced with it for four hours daily in their normal life (BtSc and BcSc); two subjects who did not use the device at all (BtSn and BcSn) allowed assessment of its use in the tasks we employed. The impact of long-term sensory deprivation was investigated by blindfolding three of those participants throughout the three week-long experiment (BcSn, BcSn/c, and BcSc); the other ten subjects were only blindfolded during the tests (BtSn, BtSc, and the eight BtSt subjects). Expectedly, the two subjects who never used the substitution device, while fast in finding the targets, had chance accuracy, whereas subjects who used the device were markedly slower, but showed much better accuracy which improved significantly across our four testing sessions. The three subjects who freely used the device daily as well as during tests were faster and more accurate than those who used it during tests only; however, long-term blindfolding did not notably influence performance. Together, the results demonstrate that the device allowed blindfolded subjects to increasingly know where something was by listening, and indicate that practice in naturalistic conditions effectively improved “visual” localization performance.
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影响因子：
1.7
作者：
Arno, P;Capelle, C;Veraart, C
通讯作者：
Veraart, C
影响因子：
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作者：
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影响因子：
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作者：
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Veraart, Claude
DOI：
10.1098/rspb.2000.1273
发表时间：
2000-11-07
影响因子：
4.7
作者：
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通讯作者：
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影响因子：
1.7
作者：
Kauffman, T;Théoret, H;Pascual-Leone, A
通讯作者：
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