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相关概念视频

Frictional Force01:07

Frictional Force

When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
Collisions in Multiple Dimensions: Introduction01:05

Collisions in Multiple Dimensions: Introduction

It is far more common for collisions to occur in two dimensions; that is, the initial velocity vectors are neither parallel nor antiparallel to each other. Let's see what complications arise from this. The first idea is that momentum is a vector. Like all vectors, it can be expressed as a sum of perpendicular components (usually, though not always, an x-component and a y-component, and a z-component if necessary). Thus, when the statement of conservation of momentum is written for a problem,...
Collisions in Multiple Dimensions: Problem Solving01:06

Collisions in Multiple Dimensions: Problem Solving

In multiple dimensions, the conservation of momentum applies in each direction independently. Hence, to solve collisions in multiple dimensions, we should write down the momentum conservation in each direction separately. To help understand collisions in multiple dimensions, consider an example.
A small car of mass 1,200 kg traveling east at 60 km/h collides at an intersection with a truck of mass 3,000 kg traveling due north at 40 km/h. The two vehicles are locked together. What is the...
Natural Selection and Adaptation01:15

Natural Selection and Adaptation

Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
Beyond physical adaptations, psychological...
Depth Perception and Spatial Vision01:15

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.

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相关实验视频

Updated: Jul 7, 2026

Haptic/Graphic Rehabilitation: Integrating a Robot into a Virtual Environment Library and Applying it to Stroke Therapy
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使用增强现实游戏对双边接触发展的描述.

Shelby Ziccardi1, Samantha Timanus1, Ghazaleh Ashrafzadehkian2

  • 1Department of Computer Science and Engineering, University of Minnesota, Kenneth H. Keller Hall, 200 Union St SE, Minneapolis, MN 55455, United States of America.

Human movement science
|July 31, 2024
PubMed
概括
此摘要是机器生成的。

这项研究使用增强现实来测量儿童的双边协调,发现对称和不对称的达到技能一起发展. 这项技术可以帮助识别神经发育条件下的协调障碍.

关键词:
增强现实是一种增强现实.双边协调 双边协调计算机视觉 计算机视觉 计算机视觉汽车发展 汽车发展为了达到目的,

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Mobile Game-based Virtual Reality Program for Upper Extremity Stroke Rehabilitation
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科学领域:

  • 神经科学是一个神经科学.
  • 发展心理学 发展心理学
  • 人与计算机的交互

背景情况:

  • 在神经发育状况中,双边协调通常会受到损害,例如脑,发育协调障碍和自闭症谱系障碍.
  • 缺乏客观的临床评估和基于年龄的规范来量化双边协调.

研究的目的:

  • 利用增强现实和计算机视觉来描述典型发育儿童的双边达到能力.
  • 为儿童建立双边协调的基于年龄的规范.

主要方法:

  • 133名6-17岁的典型发育儿童在增强现实游戏中执行了对称和不对称的双边伸手任务.
  • 通过在50秒内达到的目标对数和手之间的时间延迟来分析性能.
  • 计算机视觉和增强现实技术用于数据采集和分析.

主要成果:

  • 双边实现绩效,包括达成的目标和手拖,并行开发对称和不对称的任务.
  • 绩效发展放缓,但在12岁以后并没有稳定.
  • 儿童在对称任务中表现更好,而不是不对称任务,随着年龄的增长,手延迟变化率下降.
  • 女性的表现普遍优于男性,在10-11岁的孩子中观察到的性别差异最为显著.

结论:

  • 对称和不对称的伸展能力在整个童年和青春期表现出平行发展.
  • 增强现实和计算机视觉为量化双边协调提供了一种可行的方法.
  • 这种方法对评估具有协调障碍的临床人群有潜在的应用.