首页> 外文会议>Computational Neuroscience Meeting(CNS03); 20030705-09; Alicante(ES) >The contributions of inhibition and noise to responses in V1
【24h】

The contributions of inhibition and noise to responses in V1

机译:抑制和噪声对V1中响应的贡献

获取原文
获取原文并翻译 | 示例

摘要

We include a recently described class of inhibitory cells, complex cells untuned for orientation, as well as simple cells in a model of V1 to study their contribution in shaping simple cell responses. Untuned complex cell inhibition can suffice to explain contrast-invariant orientation-tuning and low-pass temporal frequency tuning of cortical simple cells. Given this complex cell inhibition, antiphase ("push-pull") inhibition from tuned simple inhibitory neurons acts to sharpen spatial frequency tuning and increase the stability of cortical activity. Intracortical inhibition is needed to achieve contrast-invariance of the voltage tuning, which is converted by physiological noise levels into contrast-invariant spike tuning.
机译:我们包括一类最近描述的抑制性细胞,未经调整方向的复杂细胞以及V1模型中的简单细胞,以研究它们在塑造简单细胞反应中的作用。未经调节的复杂细胞抑制作用足以解释皮层简单细胞的对比度不变的方向调节和低通时间频率调节。考虑到这种复杂的细胞抑制作用,来自调谐的简单抑制神经元的反相(“推挽”)抑制作用会加剧空间频率调谐并增加皮层活动的稳定性。需要皮层内抑制来实现电压调整的对比度不变,其通过生理噪声水平转换为对比度不变的尖峰调整。

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