镜适应向右光学偏差恢复左半球疏忽的左半球疏忽
Y Rossetti1, G Rode, L Pisella
1Service de Rééducation Neurologique, Hôpital Henry Gabrielle, Hospices Civils de Lyon, France. rossetti@lyon151.inserm.fr
Nature
|September 23, 1998
概括
镜适应通过纠正空间表示缺陷,改善了右半球中风患者的半球疏忽. 这种干预显示出持久的影响,为康复计划提供了潜力.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 康复医学 康复医学 康复医学
背景情况:
- 半球性疏忽是右半球中风患者常见的缺陷,损害了空间意识和功能恢复.
- 头顶叶的损伤往往会因破坏空间表示的感觉运动坐标转换而导致忽视.
- 目前的疏忽治疗方法长期有效性有限.
研究的目的:
- 调查镜适应在改善半位空间疏忽的各种症状中的有效性.
- 评估镜适应对主观中线病理转移的影响.
- 在被忽视的患者中确定镜适应后改善的持续时间.
主要方法:
- 患有右半球中风和半球疏忽的患者接受了镜适应,包括视野的光学转移到右边.
- 使用手动身体中线演示和标准的神经心理测试来测量忽视的改善.
- 治疗效果的持久性在镜移除后被评估.
主要成果:
- 镜适应导致手动身体中线演示和神经心理疏忽测试的表现显著改善.
- 在疏忽症状中观察到的改善,在镜被移除后至少持续了两个小时.
- 对于感觉运动和认知空间功能都注意到了积极的影响,这表明了共享的代表性水平.
结论:
- 镜适应是对半位空间疏忽的有效干预,解决空间表示和感觉运动集成方面的缺陷.
- 镜适应的持久效应表明它在临床康复计划中对被忽视的中风患者具有潜在的实用性.
- 这些发现支持这样一个假设:感官运动和认知空间功能依赖于一种基于多感官集成的空间表征.
相关概念视频
Properties of Enantiomers and Optical Activity
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Neuroplasticity
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
Cerebral Hemispheres
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
Lateralization
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
Depth Perception and Spatial Vision
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.


