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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
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The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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Visual System01:26

Visual System

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Blind Procedures02:07

Blind Procedures

Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which child was...
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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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Related Experiment Video

Updated: May 18, 2026

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
09:01

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind

Published on: March 27, 2013

An indoor navigation system for the visually impaired.

Luis A Guerrero1, Francisco Vasquez, Sergio F Ochoa

  • 1Computer Science and Informatics School, Universidad de Costa Rica, San José 2060, Costa Rica. luis.guerrero@ecci.ucr.ac.cr

Sensors (Basel, Switzerland)
|September 13, 2012
PubMed
Summary

This study introduces a new indoor navigation system for visually impaired individuals. The system tracks user movement to identify obstacles and provide guidance, showing promise for navigating unfamiliar indoor spaces.

Keywords:
augmented objectindoor positioningmovement detectionnavigation systemvisually impairedvoice interface

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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

Published on: February 11, 2014

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Last Updated: May 18, 2026

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
09:01

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind

Published on: March 27, 2013

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
09:29

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

Published on: February 11, 2014

Area of Science:

  • Assistive Technology
  • Human-Computer Interaction
  • Robotics

Background:

  • Indoor navigation is a significant challenge for visually impaired individuals, especially in new environments.
  • Existing solutions often require extensive deployment or unnatural user interfaces.
  • Usability is a critical factor for effective assistive navigation systems.

Purpose of the Study:

  • To develop and evaluate an indoor navigation system prioritizing usability for the visually impaired.
  • To create a system that accurately identifies user position, movement, and potential obstacles.
  • To provide intuitive navigation information to users with severe visual impairments.

Main Methods:

  • The system identifies the user's position, velocity, and direction of movement.
  • It calculates the user's trajectory and detects obstacles along the path.
  • Navigation information is delivered to the user through an accessible interface.

Main Results:

  • Preliminary evaluations in two experimental scenarios were conducted.
  • The system demonstrated suitability for guiding visually impaired individuals.
  • Further research is needed for definitive conclusions, but initial results are encouraging.

Conclusions:

  • The developed indoor navigation system shows potential for assisting visually impaired users.
  • Usability-focused design is key to maximizing the effectiveness of such systems.
  • The system offers a promising approach to navigating unknown built environments for the visually impaired.