Visuospatial reaching preferences of common marmosets (Callithrix jacchus):: An assessment of individual biases across a variety of tasks
Visuospatial reaching preferences of common marmosets (Callithrix jacchus):: An assessment of individual biases across a variety of tasks
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DOI：
10.1037/0735-7036.122.1.41
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发表时间：
2008-02-01
影响因子：
1.4
通讯作者：
Rogers, Lesley J.
中科院分区：
文献类型：
--
作者：
Hook, Michelle A.;Rogers, Lesley J.
使用多种措施的手偏好，作者调查了偏侧化在个人水平上在21个常见的绒猴。尽管在感觉和交流功能方面表现出群体偏见，但这些绒猴在偏侧化手部使用方向上并没有表现出群体偏见。手的偏好记录在四个新的达到任务，需要不同程度的视觉指导和姿势控制。如发现简单的食物持有（与相同的主题），他们表现出强烈的个人的手的偏好，但没有组偏见表明用手。手的偏好的强度的影响任务的要求：更强的偏好时，表示受试者采取了暂停的姿势，当“成功”与“不成功”的觅食策略进行了比较。视觉空间达到和简单的食物持有偏好之间的比较还显示，一半的受试者显示的手/半球之间的功能分工;受试者显示相反的偏好，在简单的和视觉空间达到，这将是有益的协调双手任务的性能。鉴于利手明显缺乏选择性优势，作者认为用手偏好可能反映了其他认知领域的半球优势（即，气质）。
Using multiple measures of hand preference, the authors investigated lateralization at an individual level in 21 common marmosets. Despite showing group biases for sensory and communication functions, these same marmosets did not show a group bias in direction of lateralized hand use. Hand preferences were recorded on four novel reaching tasks requiring different levels of visual guidance and postural control. As found for simple food holding (with the same subjects), they displayed strong individual hand preferences but no group bias indicative of handedness. The strength of hand preference was influenced by task demands: stronger preferences were expressed when subjects adopted a suspended posture, and when "successful" versus "unsuccessful" foraging strategies were compared. Comparisons between visuospatial reaching and simple food holding preferences also revealed that half of the subjects displayed a division of function between the hands/hemispheres; subjects displayed opposing preferences in simple and visuospatial reaching, which would be beneficial for the performance of coordinated bimanual tasks. Given the apparent absence of a selective advantage for handedness, the authors suggest that hand preferences may reflect hemispheric dominance of other cognitive domains (i.e., temperament).