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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
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Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind

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Why vision is important to how we navigate.

Arne D Ekstrom1,2,3

  • 1Center for Neuroscience, University of California, Davis, California.

Hippocampus
|March 25, 2015
PubMed
Summary
This summary is machine-generated.

Human spatial navigation relies on both internal "maps" and high-resolution visual processing. This review highlights the critical role of visual information alongside location coding systems in understanding how we navigate environments.

Keywords:
allocentriccognitive mapegocentrichippocampushumanspath integrationspatial navigation

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Spatial Cognition

Background:

  • Place cells in rodents are key to spatial navigation, suggesting analogous systems in humans.
  • Human spatial representation is often conceptualized as internal 'map-like' or GPS-like knowledge.
  • The role of visual information processing in human spatial representation remains an area of active investigation.

Purpose of the Study:

  • To review behavioral and neural evidence on human navigation.
  • To explore the integration of visual processing and spatial coding in human navigation.
  • To emphasize the importance of visual representations in spatial cognition.

Main Methods:

  • Review of existing behavioral studies on human navigation.
  • Analysis of neural studies investigating brain systems involved in navigation.
  • Synthesis of findings related to visual information processing and location coding.

Main Results:

  • Human navigation involves dedicated cellular and brain systems for visual information coding.
  • A location coding system, similar to rodent place cells, exists in humans.
  • Visual processing is a critical component of how humans represent and navigate space.

Conclusions:

  • Human spatial navigation integrates internal spatial maps with detailed visual representations.
  • Relying solely on 'map-like' representations overlooks the crucial contribution of visual processing.
  • Understanding human navigation requires considering both allocentric (map-based) and egocentric (visual) spatial information.