...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Neurophysiology >Responses of Neurons of the Extrastriate Area 21b of the Cat Brain Cortex to Changes in Orientation of Moving Visual Stimuli
【24h】

Responses of Neurons of the Extrastriate Area 21b of the Cat Brain Cortex to Changes in Orientation of Moving Visual Stimuli

机译：猫脑皮层上皮区21b的神经元对运动视觉刺激方向变化的响应

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We studied the responses of neurons of the extrastriate cortical area 21b of the cat to changes in orientation of the movements of visual stimuli within the receptive field (RF) of the neuron under study. Our experiments demonstrated that 24 of 108 cells (22%) responded differentially to a certain extent to orientation of the movements of visual stimuli. As a whole, neurons of the area 21b did not demonstrate fine tuning on the optimum angle of orientation. In many cases, neuronal responses to different orientations of the movement of visual stimulus depended significantly on specific parameters of this stimulus (its shape, dimensions, and contrast). Some directionally sensitive neurons responded to a change in orientation of the movement of visual stimuli by modification of the index of directionality. We also studied spatial organization of the RF of neurons with the presentation of stationary visual stimuli. Comparison of the neuronal responses to a change in orientation of the movements of stimuli and to presentation of stationary stimuli showed that the correlation between the orientation sensitivity of the neuron under study and the stationary functional organization of its RF was insignificant. We hypothesize that inhibitory processes and subthreshold influences from a space surrounding the RF play a special role in the formation of the neuronal responses generated in the associative visual cortical regions to visual stimulation.
机译：我们研究了猫的过度皮层区域21b的神经元对正在研究的神经元的感受野（RF）内视觉刺激运动方向变化的反应。我们的实验表明，在108个细胞中，有24个细胞（占22％）在一定程度上对视觉刺激运动的方向做出了反应。总体上，区域21b的神经元未在最佳定向角度上显示出微调。在许多情况下，对视觉刺激运动的不同方向的神经元反应在很大程度上取决于该刺激的特定参数（其形状，尺寸和对比度）。一些方向敏感的神经元通过改变方向性指数来响应视觉刺激运动的方向变化。我们还研究了静止视觉刺激的存在下神经元射频的空间组织。比较神经元对刺激运动方向的变化和静止刺激的表现的反应表明，所研究的神经元的取向敏感性与其RF的静止功能组织之间的相关性微不足道。我们假设抑制过程和阈值的影响来自RF周围空间的影响在相关视觉皮层区域对视觉刺激产生的神经元反应的形成中起特殊作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号