Memory for Hand-Use Depends on Consistency of Handedness
Memory for Hand-Use Depends on Consistency of Handedness
复制标题
用手的记忆取决于惯用手的一致性
DOI：
--
复制
发表时间：
2013
影响因子：
2.9
通讯作者：
K. Lyle
中科院分区：
文献类型：
--
作者：
James M. Edlin;Emily K. Carris;K. Lyle
在情景记忆测试中，不始终使用同一只手执行单手任务（不一致的手）的人比惯用右手和左手的人表现更好。我们探讨了不一致手（ICH）记忆优势是否扩展到单手使用本身的记忆。 ICH 是否能够更好地记住他们用哪只手执行操作？相反的预测是可能的，因为我们发现胼胝体的某些区域在 ICH 中更大，尤其是那些连接运动区域的区域。一种假设是，更大的胼胝体介导的半球间相互作用使 ICH 能够更好地检索情景记忆，这可能会扩展到手动使用的情景记忆。另外，我们还假设，在执行和恢复单手动作期间，更大的半球间相互作用可以在运动区域产生更多的双边激活。这可能会干扰 ICH 记住他们使用哪只手的能力。为了在当前的研究中测试这些相互竞争的预测，一致和不一致的手执行单手动作，其中一半需要操纵物体，一半不需要。每个动作在左右手使用比例不同的五种条件之一中执行四次：始终向左（4:0）、通常向左（3:1）、相等（2:2）、通常向右（1:3）或始终向右（0:4）。我们比较了一致手和不一致手的人对每个动作的左右比例的回忆。无论比率如何，ICH 都比一致处理者更好地记住了他们如何执行操作。这些发现提供了 ICH 中出色的情景检索的另一个例子。我们讨论更多的互动如何有利于手部使用的记忆。
Individuals who do not consistently use the same hand to perform unimanual tasks (inconsistent-handed) outperform consistent right- and left-handed individuals on tests of episodic memory. We explored whether the inconsistent-hander (ICH) memory advantage extends to memory for unimanual hand use itself. Are ICHs better able to remember which hand they used to perform actions? Opposing predictions are possible, stemming from the finding that some regions of the corpus callosum are larger in ICHs, especially those that connect motor areas. One hypothesis is that greater callosally mediated interhemispheric interaction produces ICHs’ superior retrieval of episodic memories, and this may extend to episodic memories for hand use. Alternatively, we also hypothesized that greater interhemispheric interaction could produce more bilateral activation in motor areas during the performance and retrieval of unimanual actions. This could interfere with ICHs’ ability to remember which hand they used. To test these competing predictions in the current study, consistent- and inconsistent-handers performed unimanual actions, half of which required manipulating objects and half of which did not. Each action was performed four times in one of five conditions that differed in the ratio of left to right hand use: always left (4:0), usually left (3:1), equal (2:2), usually right (1:3), or always right (0:4). We compared consistent- and inconsistent-handers on recall of the left:right ratio for each action. ICHs remembered how they performed actions better than consistent-handers, regardless of ratio. These findings provide another example of superior episodic retrieval in ICHs. We discuss how greater interaction might benefit memory for hand use.
影响因子：
56.9
作者：
KIM, SG;ASHE, J;GEORGOPOULOS, AP
通讯作者：
GEORGOPOULOS, AP
DOI：
10.1073/pnas.94.25.14015
发表时间：
1997-12-09
影响因子：
11.1
作者：
Dassonville, P;Zhu, XH;Ashe, J
通讯作者：
Ashe, J