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首页> 外文期刊>Journal of Neurophysiology >Properties of visually guided saccadic behavior and bottom-up attention in marmoset, macaque, and human.
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Properties of visually guided saccadic behavior and bottom-up attention in marmoset, macaque, and human.

机译：在阳肉，猕猴和人类的视觉引导扫视行为的性质和自下而看的关注。

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Saccades are stereotypic behaviors whose investigation improves our understanding of how primate brains implement precise motor control. Furthermore, saccades offer an important window into the cognitive and attentional state of the brain. Historically, saccade studies have largely relied on macaques. However, the cortical network giving rise to the saccadic command is difficult to study in macaques because relevant cortical areas lie in deep sulci and are difficult to access. Recently, a New World monkey. the marmoset, has garnered attention as an alternative to macaques because of advantages including its smooth cortical surface. However, adoption of the marmoset for oculomotor research has been limited due to a lack of in-depth descriptions of marmoset saccade kinematics and their ability to perform psychophysical tasks. Here, we directly compare free-viewing and visually guided behavior of marmoset, macaque, and human engaged in identical tasks under similar conditions. In the video free-viewing task, all species exhibited qualitatively similar saccade kinematics up to 25° in amplitude although with different parameters. Furthermore, the conventional bottom-up saliency model predicted gaze targets at similar rates for all species. We further verified their visually guided behavior by training them with step and gap saccade tasks. In the step paradigm, marmosets did not show shorter saccade reaction time for upward saccades whereas macaques and humans did. In the gap paradigm, all species showed similar gap effect and express saccades. Our results suggest that the marmoset can serve as a model for oculomotor, attentional, and cognitive research while we need to be aware of their difference from macaque or human. NEW & NOTEWORTHY We directly compared the results of a video free-viewing task and visually guided saccade tasks (step and gap) among three different species: marmoset, macaque, and human. We found that all species exhibit qualitatively similar saccadic kinematics and saliency-driven saccadic behavior albeit with different parameters. Our results suggest that the marmoset possesses similar neural mechanisms to macaque and human for saccadic control, and it is an appropriate model to study neural mechanisms for active vision and attention.
机译：扫视是一种刻板的行为，它的研究提高了我们对灵长类大脑如何实现精确运动控制的理解。此外，扫视提供了一个了解大脑认知和注意力状态的重要窗口。历史上，扫视研究主要依赖于猕猴。然而，在猕猴中很难研究引起扫视指令的皮层网络，因为相关的皮层区域位于深沟中，很难进入。最近，一只新世界猴子。作为猕猴的替代品，狨猴因其光滑的皮层表面等优点而备受关注。然而，由于缺乏对绒猴扫视运动学及其执行心理物理任务能力的深入描述，对绒猴动眼神经研究的采用受到了限制。在这里，我们直接比较了在类似条件下参与相同任务的狨猴、猕猴和人类的自由观看和视觉引导行为。在无视频观看任务中，所有物种都表现出在振幅上高达25°的质量相似的扫视运动，尽管参数不同。此外，传统的自下而上显著性模型对所有物种的注视目标预测率相似。我们通过对他们进行台阶和间隙扫视任务的训练，进一步验证了他们的视觉引导行为。在step范式中，与猕猴和人类相比，狨猴向上扫视的反应时间并不短。在gap范式中，所有物种都表现出相似的gap效应并表现出扫视。我们的结果表明，狨猴可以作为动眼神经、注意力和认知研究的模型，同时我们需要意识到它们与猕猴或人类的区别。新的和值得注意的是，我们直接比较了三种不同物种：狨猴、猕猴和人类的无视频观看任务和视觉引导扫视任务（台阶和间隙）的结果。我们发现，所有物种都表现出类似的扫视运动学和显著性驱动的扫视行为，尽管参数不同。我们的结果表明，狨猴具有类似于猕猴和人类的扫视控制神经机制，是研究主动视觉和注意神经机制的合适模型。

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