Cattani Allegra, Clibbens John
School of Psychology, University of Plymouth, Plymouth PL4 8AA, UK.
Brain Cogn. 2005 Jul;58(2):226-39. doi: 10.1016/j.bandc.2004.12.001. Epub 2005 Jan 28.
This paper examines the impact of auditory deprivation and sign language use on the enhancement of location memory and hemispheric specialization using two matching tasks. Forty-one deaf signers and non-signers and 51 hearing signers and non-signers were tested on location memory for shapes and objects (Study 1) and on categorical versus coordinate spatial relations (Study 2). Results of the two experiments converge to suggest that deafness alone supports the atypical left hemispheric preference in judging the location of a circle or a picture on a blank background and that deafness and sign language experience determine the superior ability of memory for location. The importance of including a sample of deaf non-signers was identified.
本文通过两项匹配任务，研究了听觉剥夺和手语使用对位置记忆增强及半球特化的影响。41名失聪手语使用者和非手语使用者以及51名听力正常的手语使用者和非手语使用者接受了形状和物体位置记忆测试（研究1）以及类别与坐标空间关系测试（研究2）。两项实验结果一致表明，仅失聪就会导致在判断空白背景上圆形或图片位置时出现非典型的左半球偏好，而失聪和手语经验则决定了位置记忆的卓越能力。研究还确定了纳入失聪非手语使用者样本的重要性。
