Burden V, Bradshaw J L, Nettleton N C, Wilson L
Neuropsychologia. 1985;23(4):515-25. doi: 10.1016/0028-3932(85)90005-3.
In Experiment I, 3-and 5-yr-old dextrals matched textures better by either hand when it operated in left hemispace. Girls and 3-yr olds were the more disadvantaged by non-alignment of hand and hemispace. In Experiment II, 8-yr-olds reproduced finger sequences; dextrals demonstrated a right-hand and sinistrals a right-hemispace superiority. In Experiment III, both a left-hand and a left-hemispace superiority appeared when 5-yr-old dextrals reproduced a static configuration of finger spacing. Asymmetries were generally stronger for the side of presentation than for the side of response. Our findings are consistent with the operation of two semi-independent systems, one involving hand-hemisphere connections, and the other mapping of extracorporeal space by the hemispheres.
在实验一中，3岁和5岁的右利手儿童当手在左半空间操作时，用任何一只手匹配纹理的表现都更好。女孩和3岁儿童在手与半空间不匹配时处于更不利的地位。在实验二中，8岁儿童再现手指序列；右利手表现出右手优势，左利手表现出右半空间优势。在实验三中，当5岁的右利手儿童再现手指间距的静态构型时，出现了左手和左半空间优势。通常，呈现侧的不对称性比反应侧更强。我们的研究结果与两个半独立系统的运作一致，一个涉及手与半球的连接，另一个是半球对体外空间的映射。
