Widespread Distribution of Visual Responsiveness in Frontal, Prefrontal, and Prelimbic Cortical Areas of the Cat: An Electrophysiologic Investigation
Widespread Distribution of Visual Responsiveness in Frontal, Prefrontal, and Prelimbic Cortical Areas of the Cat: An Electrophysiologic Investigation
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猫额叶、前额叶和前边缘皮质区域视觉反应的广泛分布：一项电生理学研究
DOI：
10.1002/(sici)1096-9861(19990301)405:1
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发表时间：
1999
影响因子：
2.5
通讯作者：
A. Gafka
中科院分区：
文献类型：
--
作者：
T. Weyand;B. V. Updyke;A. Gafka
通过使用多单元记录技术，我们探索了被其他人描述为猫的“额眼区域”的区域及其周围皮质区域的视觉反应（Schlag J, Schlag‐Rey M [1970] Brain Res 22:1–13; Guitton D, Mandl G [1978] Brain Res 149:295–312; Pigarev IN [1984] Neirofiziologiia 16:761–766）。我们的探索包括猫的大部分运动区域（区域 4 和区域 6 的细分）以及前额叶和前边缘区域。通常从我们探索的每个区域的部分获得视觉反应，包括前额叶和前边缘皮层。视觉反应的定性特征似乎随细胞结构区域的不同而变化。除少数例外，这些区域的感受野都很大（大多数超过 2,500 deg2），并且包括中央区域。如此大的视野和几乎所有部位的中央视觉都排除了视网膜专题组织，并阻止了描绘不同的视野表征。在 6aα 区域的十字沟腹侧岸观察到最可靠和最强大的视觉活动。据报道，与“额眼区域”相对应的区域没有表现出任何将其与周围区域区分开来的独特视觉特性。我们观察到的视觉驱动活动的广泛分布与皮层和皮层下输入到这一广阔皮层区域的已知模式一致。对名义上运动的皮层广泛区域的视觉反应活动的观察与最近涉及清醒动物的研究一致。 J.Comp。内罗尔。 405:99–127, 1999. © 1999 Wiley‐Liss, Inc.
By using multiple‐unit recording techniques, we explored the visual responsiveness of regions of cortex in and around the area described by others as the cat's “frontal eye fields” (Schlag J, Schlag‐Rey M [1970] Brain Res 22:1–13; Guitton D, Mandl G [1978] Brain Res 149:295–312; Pigarev IN [1984] Neirofiziologiia 16:761–766). Our exploration included most of the cat's motor areas (subdivisions of areas 4 and 6) as well as prefrontal and prelimbic regions. Visual responses were routinely obtained from portions of each of the areas we explored, including prefrontal and prelimbic cortex. The qualitative characteristics of visual responses appeared to vary with cytoarchitectonic area. With few exceptions, receptive fields in these areas were large (most exceeding 2,500 deg2) and included the area centralis. Such large fields and inclusion of central vision at nearly all sites precluded retinotopic organization and prevented delineating distinct visual field representations. The most reliable and robust visual activity was observed on the ventral bank of the cruciate sulcus in area 6aα. The regions reported to correspond to the “frontal eye fields” did not exhibit any unique visual properties that distinguished them from surrounding areas. The widespread distribution of visually driven activity we observed is consistent with the known pattern of both cortical and subcortical inputs to this broad region of cortex. The observation of visually responsive activity across broad regions of cortex that is nominally motor is consistent with recent studies involving awake animals. J. Comp. Neurol. 405:99–127, 1999. © 1999 Wiley‐Liss, Inc.
乌龟的独立眼球运动。
影响因子：
1.9
作者：
Ariel,M
通讯作者：
Ariel,M