Representation of Glossy Material Surface in Ventral Superior Temporal Sulcal Area of Common Marmosets.
Representation of Glossy Material Surface in Ventral Superior Temporal Sulcal Area of Common Marmosets.
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DOI：
10.3389/fncir.2017.00017
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发表时间：
2017
影响因子：
3.5
通讯作者：
Ichinohe N
中科院分区：
文献类型：
--
作者：
Miyakawa N;Banno T;Abe H;Tani T;Suzuki W;Ichinohe N
普通狨猴（Callithrix jacchus）是灵长类动物中最小的物种之一，具有很高的视觉识别能力，使它们能够判断环境中食物和物体的身份和质量。为了研究狨猴与材料表面特征相关的视觉信息的皮质处理，我们给麻醉的狨猴提供了一组具有相同三维形状（骨、环面或无定形）但不同材料外观（陶瓷、玻璃、毛皮、皮革、金属、石头、木材或磨砂）的刺激，并使用多柄深度分辨多电极阵列记录了从腹侧到颞上沟（STS）区域的多单元活动。在四只动物记录的143个视觉响应多单元中，29%仅对材料有显著的主要影响，3%仅对形状有显著的主要影响，43%对材料和形状都有显著的主要影响。此外，我们还发现了神经元簇，其中大多数细胞：(1)在物质外观上表现出显著的主要影响；(2)光面材料（玻璃或金属）的刺激效果最好；(3)对有光泽的材料图像的像素化版本的响应降低。光选择区域的位置与之前的猕猴研究一致，显示STS的腹侧库被激活。我们的研究结果表明，对光泽的感知是一种重要的能力，在广泛的灵长类物种中保存下来。
The common marmoset (Callithrix jacchus) is one of the smallest species of primates, with high visual recognition abilities that allow them to judge the identity and quality of food and objects in their environment. To address the cortical processing of visual information related to material surface features in marmosets, we presented a set of stimuli that have identical three-dimensional shapes (bone, torus or amorphous) but different material appearances (ceramic, glass, fur, leather, metal, stone, wood, or matte) to anesthetized marmoset, and recorded multiunit activities from an area ventral to the superior temporal sulcus (STS) using multi-shanked, and depth resolved multi-electrode array. Out of 143 visually responsive multiunits recorded from four animals, 29% had significant main effect only of the material, 3% only of the shape and 43% of both the material and the shape. Furthermore, we found neuronal cluster(s), in which most cells: (1) showed a significant main effect in material appearance; (2) the best stimulus was a glossy material (glass or metal); and (3) had reduced response to the pixel-shuffled version of the glossy material images. The location of the gloss-selective area was in agreement with previous macaque studies, showing activation in the ventral bank of STS. Our results suggest that perception of gloss is an important ability preserved across wide range of primate species.