Department of Psychology, The College of Wooster, 930 College Mall, Wooster, OH, 44691.
Dev Psychobiol. 2014 Apr;56(3):489-97. doi: 10.1002/dev.21116. Epub 2013 Jun 15.
Species-typical prenatal visual stimulation in avian species is a necessary component in the development of population level lateralized behaviors. This relationship suggests that species-typical developmental outcomes result from organismic and environmental constraints and experiences shared by members of a species. We examined the effects of prenatal visual experience on the development of turning bias and footedness in Japanese quail chicks, a species which does not demonstrate a naturally occurring level of population laterality and only weak individual laterality. Chicks (n=167) were exposed to one of four prenatal conditions: both eye systems exposed to enhanced visual experience, right eye system exposed/left eye system occluded, left eye system exposed/right eye system occluded, or no enhanced visual experience. When subjects were exposed to prenatal visual stimulation, individual and population level laterality was induced. These results suggest that unilateral prenatal visual experience to the right eye or left eye system is sufficient to induce and influence the direction of individual and population laterality in a species that does not normal demonstrate such biases. The results also provide further evidence that prenatal sensory experiences can elicit the development of postnatal lateralization.
鸟类物种中典型的产前视觉刺激是群体水平侧化行为发展的必要组成部分。这种关系表明，物种典型的发育结果是由生物体和环境的限制以及物种成员共同的经验所导致的。我们研究了产前视觉经验对日本鹌鹑雏鸡转向偏好和用脚偏好发展的影响，日本鹌鹑是一种没有表现出自然产生的群体侧化水平，只有微弱的个体侧化的物种。雏鸡（n=167）被暴露于四种产前条件之一：双眼系统暴露于增强的视觉经验中，右眼系统暴露/左眼系统被遮挡，左眼系统暴露/右眼系统被遮挡，或没有增强的视觉经验。当研究对象暴露于产前视觉刺激时，个体和群体水平的侧化被诱导。这些结果表明，单侧的产前右眼或左眼系统视觉刺激足以诱导和影响在一个没有表现出这种偏好的物种中个体和群体侧化的方向。结果还进一步证明了产前感觉经验可以引发产后侧化的发展。
