Rats and humans differ in processing collinear visual features.
Rats and humans differ in processing collinear visual features.
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DOI：
10.3389/fncir.2013.00197
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发表时间：
2013
影响因子：
3.5
通讯作者：
Reinagel P
中科院分区：
文献类型：
--
作者：
Meier PM;Reinagel P
对人类和大鼠的行为研究表明，目标刺激的视觉检测对周围的空间模式很敏感。在这两个物种中，当周围区域包含与目标共线的侧翼刺激时，定向视觉目标的检测受到影响。在许多研究中，共线侧翼已经显示出改善人类的表现，无论是绝对的（与没有侧翼的表现相比）还是相对于非共线侧翼。最近，共线侧翼已被证明会损害大鼠的性能，无论是绝对的还是相对于非共线侧翼。然而，这些观察跨越了不同的实验范式。过去对人类的研究表明，侧翼效应的大小甚至迹象都严重依赖于刺激和任务设计的细节。因此，任务差异或物种可以解释相反的发现。在这里，我们提供了一个直接比较物种之间的行为数据，并表明这些差异持续存在-共线侧翼提高人类的性能，并损害大鼠的性能-尽管控制，匹配的刺激，实验范式，和学习过程。有证据表明，目标和侧翼的对比可能会影响周围加工是抑制性还是促进性的。在第二个实验中，我们探索了大鼠的一系列对比条件，以确定对比是否可以解释共线易化的缺乏。使用不同对的目标和侧翼对比，大鼠的共线损伤被证实在一系列对比条件下是稳健的。我们的结论是，共线功能的处理确实是不同的大鼠和人类之间。我们推测，大鼠和人类之间观察到的差异是由自然视网膜图像中的统计数据差异、视觉皮层神经元的表征能力和注意力的综合影响造成的。
Behavioral studies in humans and rats demonstrate that visual detection of a target stimulus is sensitive to surrounding spatial patterns. In both species, the detection of an oriented visual target is affected when the surrounding region contains flanking stimuli that are collinear to the target. In many studies, collinear flankers have been shown to improve performance in humans, both absolutely (compared to performance with no flankers) and relative to non-collinear flankers. More recently, collinear flankers have been shown to impair performance in rats both absolutely and relative to non-collinear flankers. However, these observations spanned different experimental paradigms. Past studies in humans have shown that the magnitude and even sign of flanker effects can depend critically on the details of stimulus and task design. Therefore either task differences or species could explain the opposite findings. Here we provide a direct comparison of behavioral data between species and show that these differences persist – collinear flankers improve performance in humans, and impair performance in rats – in spite of controls that match stimuli, experimental paradigm, and learning procedure. There is evidence that the contrasts of the target and the flankers could affect whether surround processing is suppressive or facilitatory. In a second experiment, we explored a range of contrast conditions in the rat, to determine if contrast could explain the lack of collinear facilitation. Using different pairs of target and flanker contrast, the rat’s collinear impairment was confirmed to be robust across a range of contrast conditions. We conclude that processing of collinear features is indeed different between rats and humans. We speculate that the observed difference between rat and human is caused by the combined impact of differences in the statistics in natural retinal images, the representational capacity of neurons in visual cortex, and attention.
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影响因子：
64.8
作者：
通讯作者：
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影响因子：
1.8
作者：
Polat, Uri;Sagi, Dov
通讯作者：
Sagi, Dov
影响因子：
2
作者：
Bussey, Timothy J.;Padain, Tina L.;Saksida, Lisa M.
通讯作者：
Saksida, Lisa M.
影响因子：
64.8
作者：
Olshausen, BA;Field, DJ
通讯作者：
Field, DJ
影响因子：
25
作者：
Freeman, E;Sagi, D;Driver, J
通讯作者：
Driver, J