暴露于周期性光栅下的小猫对比敏感度的选择性损伤。
Selective impairment of contrast sensitivity in kittens exposed to periodic gratings.
作者信息
Fiorentini A, Maffei L
出版信息
J Physiol. 1978 Apr;277:455-66. doi: 10.1113/jphysiol.1978.sp012284.
Abstract
- Kittens were exposed to a periodic grating orientated vertically during the critical period of their life. 2. At the end of the critical period the amplitude of the response to drifting gratings was found to be reduced at the spatial frequency of exposure in multi-unit and in some single unit recordings at lateral geniculate level. 3. The contrast sensitivity measured with behavioural methods also showed a depression at the spatial frequency of exposure. 4. An analysis of the preferred stimulus orientation of cortical units in area 17 showed that all orientations were represented.
摘要
- 在小猫生命的关键期，使其暴露于垂直方向的周期性光栅下。2. 在关键期末，在外侧膝状体水平的多单元记录以及一些单单元记录中，发现对漂移光栅反应的幅度在暴露的空间频率处降低。3. 用行为学方法测量的对比敏感度在暴露的空间频率处也表现出降低。4. 对17区皮质单元偏好刺激方向的分析表明，所有方向均有代表。
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